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JP7629389B2 - Building performance prediction method and program - Google Patents
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JP7629389B2 - Building performance prediction method and program - Google Patents

Building performance prediction method and program Download PDF

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JP7629389B2
JP7629389B2 JP2021209871A JP2021209871A JP7629389B2 JP 7629389 B2 JP7629389 B2 JP 7629389B2 JP 2021209871 A JP2021209871 A JP 2021209871A JP 2021209871 A JP2021209871 A JP 2021209871A JP 7629389 B2 JP7629389 B2 JP 7629389B2
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大輔 梅本
雅紀 高田
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パナソニックホームズ株式会社
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本発明は、建物性能予測方法及びプログラムに関する。 The present invention relates to a building performance prediction method and program.

昨今、ZEH(ゼッチ、ネット・ゼロ・エネルギー・ハウス)の普及が推進されている。ZEHとは、「外皮の断熱性能等を大幅に向上させるとともに、高効率な設備システムの導入により、室内環境の質を維持しつつ大幅な省エネルギーを実現した上で、再生可能エネルギーを導入することにより、年間の一次エネルギー消費量の収支がゼロとすることを目指した住宅」である。ZEHを達成するには、建物の断熱性を向上させて空調に要するエネルギーを抑えた上で、高効率の空調機器を備えると共に、太陽光発電等によりエネルギーを創造する必要がある。このためには、建物の外皮性能(断熱性能)と、建物において空調等に要する消費エネルギーとを正確に把握することが必要となる。 Recently, the spread of ZEH (Net Zero Energy House) has been promoted. ZEH is "a house that aims to achieve a zero annual balance of primary energy consumption by significantly improving the insulation performance of the building envelope, and by introducing highly efficient equipment systems to achieve significant energy savings while maintaining the quality of the indoor environment, and by introducing renewable energy." To achieve ZEH, it is necessary to improve the insulation performance of the building to reduce the energy required for air conditioning, install highly efficient air conditioning equipment, and create energy through solar power generation, etc. For this, it is necessary to accurately understand the building envelope performance (insulation performance) and the energy consumption required for air conditioning, etc. in the building.

例えば、特許文献1に断熱性能推定装置が記載されているが、これは温度センサによる実測を行うものであり、設計段階での断熱性能の予測はできない。 For example, Patent Document 1 describes an insulation performance estimation device, but this uses actual measurements with a temperature sensor and cannot predict insulation performance at the design stage.

建物における消費エネルギーは、例えば国立研究開発法人建築研究所が公表している「建築物のエネルギー消費性能計算プログラム」等の計算プログラムを利用して算出することができる。このような計算プログラムを利用するにあたり、消費エネルギーを算出するための入力条件として、対象とする建物における日射及び断熱性能の情報が必要となるものであった。 The energy consumption of a building can be calculated using a calculation program such as the "Building Energy Consumption Performance Calculation Program" published by the Building Research Institute, a national research and development agency. When using such a calculation program, information on the solar radiation and insulation performance of the target building is required as input conditions for calculating the energy consumption.

特開2014-009498号公報JP 2014-009498 A

本開示は、上記従来の問題点に鑑みて発明したものであって、対象とする建物における日射及び断熱性能を簡易にかつ精度良く予測する建物性能予測方法及びプログラムを提供することを課題とする。 The present disclosure was invented in consideration of the above-mentioned problems with the conventional technology, and aims to provide a building performance prediction method and program that can easily and accurately predict the solar radiation and insulation performance of a target building.

本開示の一態様の建物性能予測方法は、取得ステップと、算出ステップと、出力ステップと、を備え、対象とする建物における日射及び断熱性能を予測する建物性能予測方法である。前記建物は、外皮の平面視における一の辺の長さとして予め設定された基準ピッチの整数倍の長さを有すると共に複数の前記辺は互いに平行か直角をなし、前記外皮の高さとして一又は複数の予め設定された高さのうちの一の高さを有するように設計されるものである。前記取得ステップは、前記辺の長さとしてのピッチ数及び前記高さを有する建物情報、前記建物が建てられる地域区分及び方位ブレの有無の情報を含む入力条件を取得するステップである。前記方位ブレは、無の場合には、前記外皮の平面視における前記辺の法線が北、東、南又は西を向くとして設定され、有の場合には、前記法線が北東、南東、南西又は北西を向くものとして設定されるものである。前記算出ステップは、前記入力条件に基づいて、前記外皮の合計面積、前記外皮の平均熱貫流率、冷房期平均日射熱取得率及び暖房期平均日射熱取得率を算出結果として算出するステップである。前記出力ステップは、前記算出結果を出力するステップである。 A building performance prediction method according to one aspect of the present disclosure includes an acquisition step, a calculation step, and an output step, and is a building performance prediction method for predicting solar radiation and thermal insulation performance in a target building. The building is designed so that the length of one side in a plan view of the outer skin is an integer multiple of a preset reference pitch, the multiple sides are parallel or at right angles to each other, and the height of the outer skin is one of one or multiple preset heights. The acquisition step is a step of acquiring input conditions including building information having the number of pitches as the length of the side and the height, the regional division in which the building is built, and information on the presence or absence of azimuth deviation. When there is no azimuth deviation, the normal of the side in a plan view of the outer skin is set to face north, east, south, or west, and when there is azimuth deviation, the normal is set to face northeast, southeast, southwest, or northwest. The calculation step is a step of calculating the total area of the outer shell, the average overall heat transfer coefficient of the outer shell, the average solar heat gain coefficient in the cooling season, and the average solar heat gain coefficient in the heating season as calculation results based on the input conditions. The output step is a step of outputting the calculation results.

本開示の一態様のプログラムは、1以上のプロセッサに、前記建物性能予測方法を実行させる。 A program according to one aspect of the present disclosure causes one or more processors to execute the building performance prediction method.

本開示の一態様の建物性能予測方法及びプログラムによれば、対象とする建物における日射及び断熱性能を簡易にかつ精度良く予測することができる。 The building performance prediction method and program of one aspect of the present disclosure can easily and accurately predict the solar radiation and insulation performance of a target building.

図1A及び図1Bは、一実施形態の建物を設計する際のグリッドを示す図である。1A and 1B are diagrams illustrating a grid for designing a building according to one embodiment. 図2は、同上の実施形態における建物性能予測システムの構成図である。FIG. 2 is a configuration diagram of the building performance prediction system in the above embodiment. 図3は、同上の実施形態における建物性能予測方法のフロー図である。FIG. 3 is a flow diagram of a building performance prediction method in the above embodiment.

(概要)
本開示は、建物性能予測システム、建物性能予測方法及びプログラムに関する。更に詳しくは、本開示は、対象とする建物における日射及び断熱性能を簡易にかつ精度良く予測することができる建物性能予測システム、建物性能予測方法及びプログラムに関する。
(overview)
The present disclosure relates to a building performance prediction system, a building performance prediction method, and a program. More specifically, the present disclosure relates to a building performance prediction system, a building performance prediction method, and a program that can easily and accurately predict solar radiation and insulation performance of a target building.

(詳細)
以下、本開示の一実施形態に係る建物性能予測システム、建物性能予測方法及びプログラムについて、図1~図3を参照して詳細に説明する。まず、建物性能予測システム及び建物性能予測方法の対象となる建物について説明する。
(detail)
Hereinafter, a building performance prediction system, a building performance prediction method, and a program according to an embodiment of the present disclosure will be described in detail with reference to Figures 1 to 3. First, a building that is a target of the building performance prediction system and the building performance prediction method will be described.

(1)建物
建物は、外皮の断熱性能に関わる部位として、屋根部、天井部、外壁部、床部、基礎部及び開口部を有する。建物は、二階建ての構成となっており、各階には間仕切により仕切られる複数の部屋が形成されている。
(1) Building The building has the roof, ceiling, exterior walls, floors, foundations, and openings, which are related to the thermal insulation performance of the envelope. The building is two stories high, and each floor has multiple rooms separated by partitions.

建物の内外の熱的境界となる外皮の上面部は、屋根部(又は天井部)の開口部を除く部分により構成される。また、建物の内外の熱的境界となる外皮の側面部は、外壁部の開口部を除く部分により構成される。また、建物の内外の熱的境界となる外皮の下面部は、床部(又は基礎部)により構成される。開口部は、出入口、窓、天窓等により構成される。 The upper surface of the exterior skin, which forms the thermal boundary between the inside and outside of the building, is made up of the roof (or ceiling) except for openings. The side surface of the exterior skin, which forms the thermal boundary between the inside and outside of the building, is made up of the exterior wall except for openings. The lower surface of the exterior skin, which forms the thermal boundary between the inside and outside of the building, is made up of the floor (or foundation). Openings include entrances, windows, skylights, etc.

なお、本開示において対象とする建物は、現実に建築されている必要はなく、主に設計段階やラフプラン上での建物でよい。 The buildings covered by this disclosure do not necessarily have to be actually constructed, but may be buildings that are primarily in the design stage or on rough plans.

本実施形態における建物は、予め設定されたグリッド及び高さから選択して設計される工業化住宅である。図1A及び図1Bに示すように、平面視において、互いに直交する縦方向と横方向とに所定の基準スパンSを有するグリッドが規定される。基準スパンSは、基準ピッチの4倍の長さであるが、3倍又は2倍の基準スパンSであってもよい。建物の外皮の縦方向と横方向の一の辺の長さは、基本的には、基準ピッチの整数倍の長さとなり、ピッチ数により表される。なお、外皮の縦方向と横方向の辺の長さとして、基準ピッチの整数倍とならない辺が一部にあってもよい。例えば、図1Bに示すように、基準スパンSの半分の奥行を有するセットバックSBが形成されてもよい。また、外皮の辺の一部に、他の辺と直交しない辺があってもよい。 The building in this embodiment is an industrialized house designed by selecting from preset grids and heights. As shown in Figures 1A and 1B, in a plan view, a grid having a predetermined standard span S is defined in the vertical and horizontal directions that are perpendicular to each other. The standard span S is four times the standard pitch, but may be three or two times the standard span S. The length of one side of the vertical and horizontal directions of the building's envelope is basically an integer multiple of the standard pitch and is expressed by the number of pitches. Note that the length of the vertical and horizontal sides of the envelope may be a part that is not an integer multiple of the standard pitch. For example, as shown in Figure 1B, a setback SB having a depth half the standard span S may be formed. In addition, some of the sides of the envelope may not be perpendicular to other sides.

外皮(特に側面部)の高さについても同様に、一又は複数の予め設定された高さのうちの一の高さを有するように設計される。基本的には、一階建、二階建、三階建、・・・の階数により、外皮の側面部の高さが決まる。なお、各階に対応する外皮の高さについて、複数種類の高さ(例えば240cm及び260cm)から選択可能としてもよい。 Similarly, the height of the exterior skin (particularly the side parts) is designed to have one or more preset heights. Basically, the height of the side parts of the exterior skin is determined by the number of floors (one floor, two floors, three floors, etc.). Note that the height of the exterior skin corresponding to each floor may be selectable from multiple heights (e.g., 240 cm and 260 cm).

建物の屋根部の形状としては、寄棟、陸屋根等、様々な形状パターンを含む屋根形状群のうち、いずれかの屋根形状が選択される。屋根部は、グリッドで設定された外皮の外郭形状及び屋根形状により、形状、大きさ、各屋根面の向きや水平面に対する角度が決まる。 The shape of the building roof is selected from a group of roof shapes that includes various shape patterns such as hipped roof and flat roof. The shape, size, orientation of each roof surface, and angle to the horizontal plane of the roof are determined by the outer shape of the outer skin and the roof shape set in a grid.

(2)建物性能予測システム
次に、建物性能予測システム1について説明する。図2に示すように、建物性能予測システム1は、取得部11と、記憶部12と、算出部13と、出力部14と、を備え、対象とする建物における日射及び断熱性能を予測するものである。建物性能予測システムは、例えば、1以上のプロセッサ(マイクロプロセッサ)と1以上のメモリとを含むコンピュータシステムにより実現され得る。つまり、1以上のプロセッサが1以上のメモリに記憶された1以上の(コンピュータ)プログラム(アプリケーション)を実行することで、建物性能予測システムとして機能する。
(2) Building performance prediction system Next, the building performance prediction system 1 will be described. As shown in Fig. 2, the building performance prediction system 1 includes an acquisition unit 11, a storage unit 12, a calculation unit 13, and an output unit 14, and predicts solar radiation and insulation performance of a target building. The building performance prediction system can be realized, for example, by a computer system including one or more processors (microprocessors) and one or more memories. In other words, the one or more processors execute one or more (computer) programs (applications) stored in the one or more memories, thereby functioning as a building performance prediction system.

取得部11は、入力条件を取得するものである。取得部11は、外部機器とのインターフェース111を有し、インターフェース111を介して外部記憶装置15より入力条件を取得することができる。また、取得部11は、いわゆるマウスやキーボードといった入力装置16より、入力条件を取得することができる。また、取得部11は、外部記憶装置15及び入力装置16の両方より入力条件を取得することができる。 The acquisition unit 11 acquires input conditions. The acquisition unit 11 has an interface 111 with an external device, and can acquire input conditions from an external storage device 15 via the interface 111. The acquisition unit 11 can also acquire input conditions from an input device 16, such as a mouse or keyboard. The acquisition unit 11 can also acquire input conditions from both the external storage device 15 and the input device 16.

取得部11が取得する入力条件には、外皮の辺の長さとしてのピッチ数及び高さ、屋根形状等の建物情報、建物が建てられる地域区分、方位ブレの有無の情報が含まれる。 The input conditions acquired by the acquisition unit 11 include the number of pitches as the length of the sides of the outer skin, the height, building information such as the roof shape, the area classification in which the building is built, and information on the presence or absence of azimuth deviation.

地域区分とは、広範囲の領域(例えば日本全土)をいくつかの領域区分にまとめたものであり、各地域区分毎に、季節(月日)による日出時刻及び日入時刻、時刻毎の太陽の方角及び高度、時刻毎の気温等の代表値が用いられる。 A regional division is a grouping of a wide area (for example, the whole of Japan) into several regional divisions, and for each regional division, representative values are used, such as sunrise and sunset times by season (date), the direction and altitude of the sun at each hour, and the temperature at each hour.

方位ブレは、外皮の平面視における辺の法線が、北、東、南又は西を向く方向からずれていることをいう。具体的には、方位ブレ無の場合には、外皮の側面部の法線が北、東、南又は西を向くものとして、入力条件の一部として設定される。方位ブレ有の場合には、外皮の側面部の法線が北東、南東、南西又は北西を向くものとして設定される。なお、方位ブレについては、「有」と「無」の二パターンしかないため、実際に建てられる建物が方位ブレ有と方位ブレ無のいずれかに近くなるかという点より、方位ブレの有無が判断されることが好ましい。16方位を用いて具体的に説明する。外皮のうち、方位ブレが無とした場合に法線が北、東、南又は西を向く面をそれぞれ仮第1面~仮第4面とする。この時、仮第1面が北北西~北北東を向き、仮第2面が東北東~東南東を向き、仮第3面が南南東~南南西を向き、仮第4面が西南西~西北西を向く場合、方位ブレ無とする。また、仮第1面が北西~北北西、又は北北東~北東を向き、仮第2面が北東~東北東、又は東南東~南東を向き、仮第3面が南東~南南東、又は南南西~南西を向き、仮第4面が南西~西南西、又は西北西~北西を向く場合、方位ブレ有とする。なお、方位の境界がその両側のいずれに属するかは任意に決めることができる。 Orientation deviation refers to the deviation of the normal of the side of the outer skin in a plan view from the direction facing north, east, south, or west. Specifically, when there is no orientation deviation, the normal of the side of the outer skin is set as facing north, east, south, or west as part of the input conditions. When there is orientation deviation, the normal of the side of the outer skin is set as facing northeast, southeast, southwest, or northwest. Since there are only two patterns for orientation deviation, "yes" and "no," it is preferable to determine whether there is orientation deviation from the viewpoint of whether the building actually constructed is closer to having orientation deviation or not having orientation deviation. A specific explanation will be given using 16 orientations. The surfaces of the outer skin whose normal faces north, east, south, or west when there is no orientation deviation are set as provisional first to provisional fourth surfaces, respectively. In this case, if the tentative first plane faces north-northwest to north-northeast, the tentative second plane faces east-northeast to east-southeast, the tentative third plane faces south-southeast to south-southwest, and the tentative fourth plane faces west-southwest to west-northwest, there is no azimuth deviation. Also, if the tentative first plane faces northwest to north-northwest or north-northeast to northeast, the tentative second plane faces northeast to east-northeast or east-southeast to southeast, the tentative third plane faces southeast to south-southeast or south-southwest to southwest, and the tentative fourth plane faces southwest to west-southwest or west-northwest to northwest, there is azimuth deviation. Note that it can be decided arbitrarily which side the azimuth boundary belongs to.

記憶部12は、取得部11が取得した入力条件をはじめ、様々なデータを記憶するものである。記憶部12は、例えばEEPROM(Electrically Erasable Programmable Read Only Memory)やHDD(Hard Disk Drive)により適宜構成されるが、これらに限定されない。 The storage unit 12 stores various data, including the input conditions acquired by the acquisition unit 11. The storage unit 12 is appropriately configured, for example, with an EEPROM (Electrically Erasable Programmable Read Only Memory) or a HDD (Hard Disk Drive), but is not limited to these.

算出部13は、入力条件に基づいて、外皮の合計面積(m)、外皮の平均熱貫流率U(W/mK)、冷房期平均日射熱取得率ηAC、暖房期平均日射熱取得率ηAH、屋根部に搭載可能な太陽光発電パネルによる発電量(W)を算出結果として算出するものである。 Based on the input conditions, the calculation unit 13 calculates the total area ( m2 ) of the exterior skin, the average heat transfer coefficient UA (W/ m2K ) of the exterior skin, the average solar heat gain coefficient η AC during the cooling season, the average solar heat gain coefficient η AH during the heating season, and the amount of electricity generated (W) by the solar power generation panels that can be installed on the roof as calculation results.

出力部14は、算出結果を出力するものである。出力部14は、ディスプレイ等の出力装置17とのインターフェース141を有し、出力装置17に算出結果を出力することができる。 The output unit 14 outputs the calculation results. The output unit 14 has an interface 141 with an output device 17 such as a display, and can output the calculation results to the output device 17.

(3)建物性能予測方法
次に、図3に基づいて建物性能予測方法について説明する。建物性能予測方法は、取得ステップと、算出ステップと、出力ステップと、を備える。
(3) Building Performance Prediction Method Next, a building performance prediction method will be described with reference to Fig. 3. The building performance prediction method includes an acquisition step, a calculation step, and an output step.

取得ステップ(ステップS1)は、取得部11により実行される。取得ステップは、外皮の辺の長さとしてのピッチ数及び高さ、屋根形状等の建物情報、建物が建てられる地域区分、方位ブレの有無の情報を含む入力条件を取得するステップである。入力条件は、外部記憶装置15又は入力装置16より取得部11が取得する。 The acquisition step (step S1) is executed by the acquisition unit 11. The acquisition step is a step for acquiring input conditions including building information such as the number of pitches and height as the length of the outer skin side, roof shape, the area division in which the building is built, and information on the presence or absence of azimuth deviation. The input conditions are acquired by the acquisition unit 11 from the external storage device 15 or the input device 16.

記憶ステップ(ステップS2)は、取得部11より取得された入力条件を記憶部12に記憶させるステップである。 The storage step (step S2) is a step in which the input conditions acquired by the acquisition unit 11 are stored in the storage unit 12.

算出ステップ(ステップS3)は、算出部13により実行される。算出ステップは、入力条件に基づいて、外皮の合計面積、外皮の平均熱貫流率U、冷房期平均日射熱取得率ηA,C、暖房期平均日射熱取得率ηA,H、屋根部に搭載可能な太陽光発電パネルによる発電量を算出結果として算出するステップである。 The calculation step (step S3) is executed by the calculation unit 13. The calculation step is a step of calculating, based on the input conditions, the total area of the exterior wall, the average overall heat transfer coefficient U A of the exterior wall, the average solar heat gain coefficient η A,C during the cooling season, the average solar heat gain coefficient η A,H during the heating season, and the amount of power generated by the photovoltaic power generation panels that can be mounted on the roof as calculation results.

外皮の合計面積(m)は、外皮の側面部の各面において、ピッチ数より求まる水平方向長さ(m)×高さ(m)により面積がそれぞれ求まり、これらを合計することで求まる。また、外皮の上面部については、ピッチ数より求まる縦方向長さ(m)×ピッチ数より求まる横方向長さ(m)により面積が求まる。 The total surface area ( m2 ) of the skin is calculated by multiplying the horizontal length (m) calculated from the number of pitches by the height (m) of each side of the skin, and adding these up. The area of the top surface of the skin is calculated by multiplying the vertical length (m) calculated from the number of pitches by the horizontal length (m) calculated from the number of pitches.

外皮の平均熱貫流率U(W/mK)は、下記式[数1]により求められる。 The average heat transmission coefficient U A (W/m 2 K) of the outer skin is calculated by the following formula [Mathematical formula 1].

ここで、
:外皮の部位(一般部位又は開口)iの面積(m
:外皮の部位(一般部位又は開口)iの熱貫流率(W/mK)
:外皮の部位(一般部位又は開口)iの温度差係数
:熱橋及び土間床等の外周部jの長さ(m)
Ψ:熱橋及び土間床等の外周部jの線熱貫流率(W/mK)
:熱橋及び土間床等の外周部jの温度差係数
env:外皮の部位の面積の合計(m
である。
Where:
A i : Area of the outer skin part (general part or opening) i (m 2 )
U i : Thermal transmittance of the outer skin part (general part or opening) i (W/m 2 K)
H i : Temperature difference coefficient of the outer skin part (general part or opening) i L j : Length of the outer periphery j of the thermal bridge and the earthen floor (m)
Ψ J : Linear heat transmittance of the outer periphery j of the thermal bridge and the earthen floor (W / mK)
H J : Temperature difference coefficient of the outer periphery j of the thermal bridge and the earthen floor, etc. A env : Total area of the outer skin (m 2 )
It is.

冷房期平均日射熱取得率ηA,Cは下記式[数2]により、暖房期平均日射熱取得率ηA,Hは下記式[数3]により求められる。 The cooling season average solar heat gain coefficient η A,C is calculated by the following formula [Math 2], and the heating season average solar heat gain coefficient η A,H is calculated by the following formula [Math 3].

ここで、
ηC,i:外皮の部位(一般部位又は開口部)iの冷房期の日射熱取得率
ηH,i:外皮の部位(一般部位又は開口部)iの暖房期の日射熱取得率
νC,i:外皮の部位(一般部位又は開口部)iの冷房期の方位係数
νH,i:外皮の部位(一般部位又は開口部)iの暖房期の方位係数
である。
Where:
η C,i : Solar heat gain coefficient during the cooling season for the exterior part (general part or opening) i; η H,i : Solar heat gain coefficient during the heating season for the exterior part (general part or opening) i; ν C,i : Orientation coefficient during the cooling season for the exterior part (general part or opening) i; ν H,i : Orientation coefficient during the heating season for the exterior part (general part or opening) i.

また、外皮の部位iに庇等による日除けの効果がある場合には、この部位の冷房期日射熱取得率ηC,iは下記式[数4]により、暖房期日射熱取得率ηH,iは下記式[数5]により求められる。 In addition, when part i of the exterior shell has a sunshade effect due to a canopy or the like, the cooling season solar heat gain coefficient η C,i for this part can be calculated using the following formula [Math 4], and the heating season solar heat gain coefficient η H,i for this part can be calculated using the following formula [Math 5].

ここで、
sh,C,i:一般部位iの冷房期の日除けの効果係数
sh,H,i:一般部位iの暖房期の日除けの効果係数
である。
Where:
f sh,C,i : The effectiveness coefficient of the sunshade for the general part i during the cooling season. f sh,H,i : The effectiveness coefficient of the sunshade for the general part i during the heating season.

屋根部に搭載可能な太陽光発電パネルによる発電量は、まず、屋根部を構成する各屋根面に搭載可能な太陽光発電パネルの枚数が算出される。これにあたっては、取得された屋根形状より、各屋根面の形状及び大きさより、所定の形状を有する太陽光発電パネルが何枚搭載可能であるかが算出される。また、各屋根面の向き及び水平面に対する角度と、地域区分により、各屋根面に載置された太陽光発電パネルが受ける日射を考慮した発電量が算出される。これら屋根面毎の発電量を合計することにより、屋根部全体における太陽光発電パネルにより発電される発電量が算出される。 To calculate the amount of power generated by solar panels that can be mounted on the roof, first calculate the number of solar panels that can be mounted on each roof surface that makes up the roof. To do this, the acquired roof shape and the shape and size of each roof surface are used to calculate how many solar panels of a specified shape can be mounted. In addition, the amount of power generated is calculated taking into account the orientation of each roof surface, its angle relative to the horizontal plane, and the solar radiation received by the solar panels mounted on each roof surface, based on the regional classification. The amount of power generated by the solar panels on the entire roof is calculated by adding up the amount of power generated by each roof surface.

出力ステップ(ステップS4)は、出力部14により実行される。出力ステップは、算出結果を出力するステップである。 The output step (step S4) is executed by the output unit 14. The output step is a step of outputting the calculation result.

上述した建物性能予測方法(建物性能予測システム1)によれば、対象とする建物における日射及び断熱性能(外皮の合計面積、外皮の平均熱貫流率U、冷房期平均日射熱取得率ηA,C、暖房期平均日射熱取得率ηA,H、屋根部に搭載可能な太陽光発電パネルによる発電量)を簡易にかつ精度良く予測することができる。特に、建物の方位ブレの有無を考慮することにより、簡易にかつ精度良く冷房期平均日射熱取得率ηA,C及び暖房期平均日射熱取得率ηA,Hを算出することができる。 According to the above-mentioned building performance prediction method (building performance prediction system 1), it is possible to easily and accurately predict the solar radiation and insulation performance (total area of the envelope, average overall heat transfer coefficient U A of the envelope, cooling season average solar heat gain coefficient η A,C , heating season average solar heat gain coefficient η A,H , and power generation by photovoltaic power generation panels that can be mounted on the roof) of a target building. In particular, by taking into account the presence or absence of deviation in the building's orientation, it is possible to easily and accurately calculate the cooling season average solar heat gain coefficient η A,C and the heating season average solar heat gain coefficient η A,H .

また、屋根部に搭載可能な太陽光発電パネルによる発電量が算出されるため、特にZEH対応の建物の設計や営業の際に発電量を把握することができ、便利である。 In addition, the amount of electricity generated by solar panels that can be installed on the roof is calculated, which is particularly useful for understanding the amount of electricity generated when designing or operating a ZEH-compatible building.

(4)変形例
次に、上述した実施形態に施すことが可能な変形例について説明する。
(4) Modifications Next, modifications that can be made to the above-described embodiment will be described.

(4.1)変形例1
変形例1では、算出ステップは、冷房期平均日射熱取得率及び暖房期平均日射熱取得率を算出するにあたり、建物の向き(方位)を不利な条件に設定して、算出結果の安全性を高める(低スペックとなるように算出する)ステップを更に有する。
(4.1) Modification 1
In variant example 1, the calculation step further includes a step of setting the building orientation (azimuth) to unfavorable conditions when calculating the cooling season average solar heat gain coefficient and the heating season average solar heat gain coefficient, thereby increasing the safety of the calculation results (calculating to low specifications).

具体的には、算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、仮第1面の法線が北、東、南又は西を向く場合のそれぞれについて建物の冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を建物の冷房期平均日射熱取得率として採用するステップを更に有する。 Specifically, when calculating the cooling season average solar heat gain coefficient, the calculation step further includes a step of provisionally calculating the cooling season average solar heat gain coefficient of the building for each case in which the normal of the provisional first surface faces north, east, south, or west when there is no acquired azimuth deviation, and adopting the largest value among these as the cooling season average solar heat gain coefficient of the building.

また、算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、仮第1面の法線が北東、南東、南西又は北西を向く場合のそれぞれについて建物の冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を建物の冷房期平均日射熱取得率として採用するステップを更に有する。 The calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the cooling season for the building when the acquired azimuth deviation exists, for each of the cases where the normal line of the provisional first surface faces the northeast, southeast, southwest, or northwest, and adopting the largest value among these as the average solar heat gain coefficient during the cooling season for the building.

次に、算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、仮第1面の法線が北、東、南又は西を向く場合のそれぞれについて建物の暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を建物の暖房期平均日射熱取得率として採用するステップを更に有する。 Next, the calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the heating season for the building when there is no azimuth deviation obtained, for each of the cases in which the normal of the provisional first surface faces north, east, south, or west, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season for the building.

また、算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、仮第1面の法線が北東、南東、南西又は北西を向く場合のそれぞれについて建物の暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を建物の暖房期平均日射熱取得率として採用するステップを更に有する。 The calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the heating season for the building when the acquired azimuth deviation exists, for each of the cases where the normal line of the provisional first surface faces the northeast, southeast, southwest, or northwest, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season for the building.

変形例1では、建物の建築現場における方位ブレの有無が決まっているが、建物については間取りや全体の形状は決まっているものの、各壁面がどの方位を向くかが決まっていない場合に、算出結果の安全性が高まる。 In variant 1, the presence or absence of azimuth deviation at the building construction site is determined, but the safety of the calculation results is increased in cases where the layout and overall shape of the building are determined but the direction of each wall is not determined.

(4.2)変形例2
変形例2では、算出ステップは、冷房期平均日射熱取得率及び暖房期平均日射熱取得率を算出するにあたり、開口部の向き(方位)を不利な条件に設定して、算出結果の安全性を高める(低スペックとなるように算出する)ステップを更に有する。
(4.2) Modification 2
In variant example 2, the calculation step further includes a step of setting the orientation (azimuth) of the opening to unfavorable conditions when calculating the cooling season average solar heat gain coefficient and the heating season average solar heat gain coefficient, thereby increasing the safety of the calculation results (calculating to low specifications).

具体的には、取得ステップは、入力条件として、外皮に形成される開口部の合計開口面積を取得するステップを更に有する。 Specifically, the acquisition step further includes a step of acquiring the total opening area of the openings formed in the outer skin as an input condition.

次に、算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、合計開口面積を有する開口部の法線が北、東、南又は西を向く場合のそれぞれについて開口部における冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を開口部における冷房期平均日射熱取得率として採用するステップを更に有する。 Next, the calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the cooling season at the openings for each case in which the normal of the openings having a total opening area faces north, east, south, or west when there is no azimuth deviation obtained, and adopting the largest value among these as the average solar heat gain coefficient during the cooling season at the openings.

また、算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、合計開口面積を有する開口部の法線が北東、南東、南西又は北西を向く場合のそれぞれについて開口部における冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を開口部における冷房期平均日射熱取得率として採用するステップを更に有する。 The calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the cooling season at the openings for each case in which the normal of the openings having a total opening area faces northeast, southeast, southwest, or northwest when calculating the average solar heat gain coefficient during the cooling season at the openings if there is an azimuth deviation obtained, and adopting the largest value among these as the average solar heat gain coefficient during the cooling season at the openings.

次に、算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、合計開口面積を有する開口部の法線が北、東、南又は西を向く場合のそれぞれについて開口部における暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を開口部における暖房期平均日射熱取得率として採用するステップを更に有する。 Next, the calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the heating season at the openings for each case in which the normal of the openings having a total opening area faces north, east, south, or west when there is no azimuth deviation obtained, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season at the openings.

また、算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、合計開口面積を有する開口部の法線が北東、南東、南西又は北西を向く場合のそれぞれについて開口部における暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を開口部における暖房期平均日射熱取得率として採用するステップを更に有する。 The calculation step further includes a step of provisionally calculating the average solar heat gain coefficient during the heating season at the openings for each case in which the normal of the openings having a total opening area faces northeast, southeast, southwest, or northwest when calculating the average solar heat gain coefficient during the heating season at the openings if there is an azimuth deviation obtained, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season at the openings.

変形例2では、建物の建築現場における方位ブレの有無が決まっているが、建物については間取りや全体の形状は決まっているものの、各壁面及び壁面に形成される開口部がどの方位を向くかが決まっていない場合に、算出結果の安全性が高まる。 In variant 2, the presence or absence of azimuth deviation at the building construction site is determined, but the floor plan and overall shape of the building are determined, but the direction of each wall and the openings formed in the wall faces is not determined, increasing the safety of the calculation results.

(5)態様
上記実施形態から明らかなように、本開示は、下記の態様を含む。
(5) Aspects As is apparent from the above embodiment, the present disclosure includes the following aspects.

第1の態様は、取得ステップと、算出ステップと、出力ステップと、を備え、対象とする建物における日射及び断熱性能を予測する建物性能予測方法である。建物は、外皮の平面視における一の辺の長さとして予め設定された基準ピッチの整数倍の長さを有すると共に複数の辺は互いに平行か直角をなし、外皮の高さとして一又は複数の予め設定された高さのうちの一の高さを有するように設計されるものである。取得ステップは、辺の長さとしてのピッチ数及び高さを有する建物情報、建物が建てられる地域区分及び方位ブレの有無の情報を含む入力条件を取得するステップである。方位ブレは、無の場合には、外皮の平面視における辺の法線が北、東、南又は西を向くとして設定され、有の場合には、法線が北東、南東、南西又は北西を向くものとして設定されるものである。算出ステップは、入力条件に基づいて、外皮の合計面積、外皮の平均熱貫流率、冷房期平均日射熱取得率及び暖房期平均日射熱取得率を算出結果として算出するステップである。出力ステップは、算出結果を出力するステップである。 The first aspect is a building performance prediction method for predicting solar radiation and thermal insulation performance of a target building, comprising an acquisition step, a calculation step, and an output step. The building is designed so that the length of one side in a plan view of the outer skin is an integer multiple of a preset reference pitch, the multiple sides are parallel or at right angles to each other, and the height of the outer skin is one of one or multiple preset heights. The acquisition step is a step of acquiring input conditions including building information having the number of pitches and height as the length of the sides, the regional division in which the building is built, and information on the presence or absence of azimuth deviation. If there is no azimuth deviation, the normal of the side in the plan view of the outer skin is set to face north, east, south, or west, and if there is, the normal is set to face northeast, southeast, southwest, or northwest. The calculation step is a step of calculating the total area of the outer skin, the average heat transfer coefficient of the outer skin, the average solar heat gain coefficient in the cooling season, and the average solar heat gain coefficient in the heating season as calculation results based on the input conditions. The output step is the step of outputting the calculation results.

第1の態様では、対象とする建物における外皮の合計面積、外皮の平均熱貫流率U、冷房期平均日射熱取得率ηA,C及び暖房期平均日射熱取得率ηA,Hを簡易にかつ精度良く予測することができる。特に、建物の方位ブレの有無を考慮することにより、簡易にかつ精度良く冷房期平均日射熱取得率ηA,C及び暖房期平均日射熱取得率ηA,Hを算出することができる。 In the first aspect, it is possible to easily and accurately predict the total area of the envelope of a target building, the average overall heat transfer coefficient U A of the envelope, the cooling season average solar heat gain coefficient η A,C , and the heating season average solar heat gain coefficient η A,H . In particular, by taking into account the presence or absence of deviation in the building's orientation, it is possible to easily and accurately calculate the cooling season average solar heat gain coefficient η A,C and the heating season average solar heat gain coefficient η A,H .

第2の態様は、第1の態様に基づく建物性能予測方法である。第2の態様では、外皮のうち、方位ブレが無とした場合に法線が北、東、南又は西を向く面をそれぞれ仮第1面~仮第4面とする。算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、仮第1面の法線が北、東、南又は西を向く場合のそれぞれについて建物の冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を建物の冷房期平均日射熱取得率として採用するステップである。算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、仮第1面の法線が北東、南東、南西又は北西を向く場合のそれぞれについて建物の冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を建物の冷房期平均日射熱取得率として採用するステップである。 The second aspect is a building performance prediction method based on the first aspect. In the second aspect, the surfaces of the exterior skin whose normals face north, east, south, or west when there is no azimuth deviation are designated as tentative first to tentative fourth surfaces, respectively. The calculation step is a step of calculating the cooling season average solar heat gain coefficient when there is no acquired azimuth deviation, provisionally calculating the cooling season average solar heat gain coefficient of the building for each case in which the normal of the tentative first surface faces north, east, south, or west, and adopting the largest value among these as the cooling season average solar heat gain coefficient of the building. The calculation step is a step of calculating the cooling season average solar heat gain coefficient when there is acquired azimuth deviation, provisionally calculating the cooling season average solar heat gain coefficient of the building for each case in which the normal of the tentative first surface faces northeast, southeast, southwest, or northwest, and adopting the largest value among these as the cooling season average solar heat gain coefficient of the building.

第2の態様では、建物の向き(方位)を不利な条件に設定して、算出結果の安全性を高めることができる。 In the second aspect, the building's orientation (azimuth) can be set to unfavorable conditions to increase the safety of the calculation results.

第3の態様は、第1又は第2の態様に基づく建物性能予測方法である。第3の態様では、外皮のうち、方位ブレが無とした場合に法線が北、東、南又は西を向く面をそれぞれ仮第1面~仮第4面とする。算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、仮第1面の法線が北、東、南又は西を向く場合のそれぞれについて建物の暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を建物の暖房期平均日射熱取得率として採用するステップである。算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、仮第1面の法線が北東、南東、南西又は北西を向く場合のそれぞれについて建物の暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を建物の暖房期平均日射熱取得率として採用するステップである。 The third aspect is a building performance prediction method based on the first or second aspect. In the third aspect, the surfaces of the exterior skin whose normals face north, east, south, or west when there is no azimuth deviation are designated as tentative first to tentative fourth surfaces, respectively. The calculation step is a step of calculating the average solar heat gain coefficient during the heating season when there is no azimuth deviation, provisionally calculating the average solar heat gain coefficient during the heating season for each case in which the normal of the tentative first surface faces north, east, south, or west, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season of the building. The calculation step is a step of calculating the average solar heat gain coefficient during the heating season when there is azimuth deviation, provisionally calculating the average solar heat gain coefficient during the heating season for each case in which the normal of the tentative first surface faces northeast, southeast, southwest, or northwest, and adopting the smallest value among these as the average solar heat gain coefficient during the heating season of the building.

第3の態様では、建物の向き(方位)を不利な条件に設定して、算出結果の安全性を高めることができる。 In the third aspect, the building's orientation (azimuth) can be set to unfavorable conditions to increase the safety of the calculation results.

第4の態様は、第1~第3のいずれかの態様に基づく建物性能予測方法である。第4の態様では、取得ステップは、入力条件として、外皮に形成される開口部の合計開口面積を取得するステップである。算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、合計開口面積を有する開口部の法線が北、東、南又は西を向く場合のそれぞれについて開口部における冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を開口部における冷房期平均日射熱取得率として採用するステップである。算出ステップは、冷房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、合計開口面積を有する開口部の法線が北東、南東、南西又は北西を向く場合のそれぞれについて開口部における冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を開口部における冷房期平均日射熱取得率として採用するステップである。 The fourth aspect is a building performance prediction method based on any one of the first to third aspects. In the fourth aspect, the acquisition step is a step of acquiring the total opening area of the openings formed in the outer skin as an input condition. The calculation step is a step of provisionally calculating the average solar heat gain coefficient during the cooling season at the openings for each case in which the normal line of the openings having the total opening area faces north, east, south, or west when there is no acquired azimuth deviation, and adopting the largest value among these as the average solar heat gain coefficient during the cooling season at the openings. The calculation step is a step of provisionally calculating the average solar heat gain coefficient during the cooling season at the openings for each case in which the normal line of the openings having the total opening area faces northeast, southeast, southwest, or northwest when there is acquired azimuth deviation, and adopting the largest value among these as the average solar heat gain coefficient during the cooling season at the openings.

第4の態様では、開口部の向き(方位)を不利な条件に設定して、算出結果の安全性を高めることができる。 In the fourth aspect, the orientation (azimuth) of the opening can be set to unfavorable conditions to increase the safety of the calculation results.

第5の態様は、第1~第4のいずれかの態様に基づく建物性能予測方法である。第5の態様では、取得ステップは、入力条件として、外皮に形成される開口部の合計開口面積を取得するステップである。算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが無のときには、合計開口面積を有する開口部の法線が北、東、南又は西を向く場合のそれぞれについて開口部における暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を開口部における暖房期平均日射熱取得率として採用するステップである。算出ステップは、暖房期平均日射熱取得率を算出するにあたり、取得した方位ブレが有のときには、合計開口面積を有する開口部の法線が北東、南東、南西又は北西を向く場合のそれぞれについて開口部における暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を開口部における暖房期平均日射熱取得率として採用するステップである。 The fifth aspect is a building performance prediction method based on any one of the first to fourth aspects. In the fifth aspect, the acquisition step is a step of acquiring the total opening area of the openings formed in the outer skin as an input condition. The calculation step is a step of provisionally calculating the average solar heat gain coefficient in the heating season at the openings for each case in which the normal of the openings having the total opening area faces north, east, south, or west when there is no acquired azimuth deviation, and adopting the smallest value among these as the average solar heat gain coefficient in the heating season at the openings. The calculation step is a step of provisionally calculating the average solar heat gain coefficient in the heating season at the openings for each case in which the normal of the openings having the total opening area faces northeast, southeast, southwest, or northwest when there is acquired azimuth deviation, and adopting the smallest value among these as the average solar heat gain coefficient in the heating season at the openings.

第5の態様では、開口部の向き(方位)を不利な条件に設定して、算出結果の安全性を高めることができる。 In the fifth aspect, the orientation (azimuth) of the opening can be set to unfavorable conditions to increase the safety of the calculation results.

第6の態様は、第1~第5のいずれかの態様に基づく建物性能予測方法である。第6の態様では、入力条件として、建物の屋根部の形状として寄棟及び陸屋根を含む屋根形状群のうちのいずれの屋根形状であるかの情報が含まれる。算出ステップは、外皮の辺の長さとしてのピッチ数及び屋根形状の情報に基づいて、屋根部に搭載可能な太陽光発電パネルによる発電量を算出するステップを更に有する。 The sixth aspect is a building performance prediction method based on any one of the first to fifth aspects. In the sixth aspect, the input conditions include information on the shape of the roof of the building from a group of roof shapes including a hipped roof and a flat roof. The calculation step further includes a step of calculating the amount of power generated by a photovoltaic power generation panel that can be mounted on the roof based on the number of pitches as the length of the side of the outer skin and the information on the roof shape.

第6の態様では、例えばZEH対応の建物の設計や営業の際に発電量を把握することができ、便利である。 The sixth aspect is useful, for example, because it makes it possible to grasp the amount of electricity generated when designing or operating a ZEH-compatible building.

第7の態様は、第1~第6のいずれかの態様に基づくプログラムである。第7の態様では、プログラムは、1以上のプロセッサに、第1~第6のいずれかの態様の建物性能予測方法を実行させる。 The seventh aspect is a program based on any one of the first to sixth aspects. In the seventh aspect, the program causes one or more processors to execute the building performance prediction method of any one of the first to sixth aspects.

第7の態様では、対象とする建物における外皮の合計面積、外皮の平均熱貫流率U、冷房期平均日射熱取得率ηA,C及び暖房期平均日射熱取得率ηA,Hを簡易にかつ精度良く予測することができる。特に、建物の方位ブレの有無を考慮することにより、簡易にかつ精度良く冷房期平均日射熱取得率ηA,C及び暖房期平均日射熱取得率ηA,Hを算出することができる。 In the seventh aspect, it is possible to easily and accurately predict the total area of the envelope of a target building, the average overall heat transfer coefficient U A of the envelope, the cooling season average solar heat gain coefficient η A,C, and the heating season average solar heat gain coefficient η A,H . In particular, by taking into account the presence or absence of deviation in the orientation of the building, it is possible to easily and accurately calculate the cooling season average solar heat gain coefficient η A,C and the heating season average solar heat gain coefficient η A,H .

1 建物性能予測システム
11 取得部
111 インターフェース
12 記憶部
13 算出部
14 出力部
141 インターフェース
15 外部記憶装置
16 入力装置
17 出力装置
REFERENCE SIGNS LIST 1 Building performance prediction system 11 Acquisition unit 111 Interface 12 Storage unit 13 Calculation unit 14 Output unit 141 Interface 15 External storage device 16 Input device 17 Output device

Claims (7)

取得ステップと、算出ステップと、出力ステップと、を備え、
対象とする建物における日射及び断熱性能を予測する建物性能予測方法であって、
前記建物は、
外皮の平面視における一の辺の長さとして予め設定された基準ピッチの整数倍の長さを有すると共に複数の前記辺は互いに平行か直角をなし、
前記外皮の高さとして一又は複数の予め設定された高さのうちの一の高さを有するように設計されるものであり、
前記取得ステップは、前記辺の長さとしてのピッチ数及び前記高さを有する建物情報、前記建物が建てられる地域区分及び方位ブレの有無の情報を含む入力条件を取得するステップであり、
前記方位ブレは、
無の場合には、前記外皮の平面視における前記辺の法線が北、東、南又は西を向くとして設定され、
有の場合には、前記法線が北東、南東、南西又は北西を向くものとして設定されるものであり、
前記算出ステップは、前記入力条件に基づいて、前記外皮の合計面積、前記外皮の平均熱貫流率、冷房期平均日射熱取得率及び暖房期平均日射熱取得率を算出結果として算出するステップであり、
前記出力ステップは、前記算出結果を出力するステップである、
建物性能予測方法。
The method includes an acquisition step, a calculation step, and an output step,
A building performance prediction method for predicting solar radiation and insulation performance in a target building, comprising:
The building is:
The length of one side of the outer skin in a plan view is an integer multiple of a preset reference pitch, and the multiple sides are parallel to each other or form a right angle,
The height of the outer shell is designed to be one of one or more preset heights,
The acquisition step is a step of acquiring input conditions including building information having the number of pitches as the length of the side and the height, a regional division in which the building is to be built, and information on the presence or absence of azimuth deviation,
The azimuth deviation is
In the case of none, the normal of the edge in a plan view of the outer skin is set to face north, east, south, or west;
If yes, the normal is set to face northeast, southeast, southwest or northwest;
The calculation step is a step of calculating a total area of the outer shell, an average overall heat transmission coefficient of the outer shell, an average solar radiation heat acquisition coefficient in a cooling season, and an average solar radiation heat acquisition coefficient in a heating season as calculation results based on the input conditions,
The output step is a step of outputting the calculation result.
Methods for predicting building performance.
前記外皮のうち、前記方位ブレが無とした場合に前記法線が北、東、南又は西を向く面をそれぞれ仮第1面~仮第4面とし、
前記算出ステップは、前記冷房期平均日射熱取得率を算出するにあたり、
取得した前記方位ブレが無のときには、前記仮第1面の前記法線が北、東、南又は西を向く場合のそれぞれについて前記建物の前記冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を前記建物の前記冷房期平均日射熱取得率として採用し、
取得した前記方位ブレが有のときには、前記仮第1面の前記法線が北東、南東、南西又は北西を向く場合のそれぞれについて前記建物の前記冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を前記建物の前記冷房期平均日射熱取得率として採用するステップである、
請求項1に記載の建物性能予測方法。
Among the outer skin, the surfaces whose normals face north, east, south, or west when the orientation deviation is zero are designated as provisional first to fourth surfaces, respectively;
In calculating the cooling season average solar heat gain coefficient, the calculation step
When the acquired azimuth deviation is absent, the cooling season average solar radiation heat acquisition coefficient of the building is provisionally calculated for each case in which the normal line of the provisional first surface faces north, east, south, or west, and the largest value among these is adopted as the cooling season average solar radiation heat acquisition coefficient of the building;
a step of provisionally calculating the cooling season average solar radiation heat gain coefficient of the building for each of the cases where the normal line of the provisional first surface faces the northeast, southeast, southwest, or northwest when the acquired azimuth deviation exists, and adopting the largest value among these as the cooling season average solar radiation heat gain coefficient of the building;
The building performance prediction method according to claim 1 .
前記外皮のうち、前記方位ブレが無とした場合に前記法線が北、東、南又は西を向く面をそれぞれ仮第1面~仮第4面とし、
前記算出ステップは、前記暖房期平均日射熱取得率を算出するにあたり、
取得した前記方位ブレが無のときには、前記仮第1面の前記法線が北、東、南又は西を向く場合のそれぞれについて前記建物の前記暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を前記建物の前記暖房期平均日射熱取得率として採用し、
取得した前記方位ブレが有のときには、前記仮第1面の前記法線が北東、南東、南西又は北西を向く場合のそれぞれについて前記建物の前記暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を前記建物の前記暖房期平均日射熱取得率として採用するステップである、
請求項1又は2に記載の建物性能予測方法。
Among the outer skin, the surfaces whose normals face north, east, south, or west when the orientation deviation is zero are designated as provisional first to fourth surfaces, respectively;
In calculating the heating season average solar heat gain coefficient, the calculation step
When the acquired azimuth deviation is absent, the heating season average solar heat gain coefficient of the building is provisionally calculated for each case in which the normal line of the provisional first surface faces north, east, south, or west, and the smallest value among these is adopted as the heating season average solar heat gain coefficient of the building;
a step of provisionally calculating the heating season average solar heat gain coefficient of the building for each of the cases where the normal line of the provisional first surface faces the northeast, southeast, southwest, or northwest when the acquired azimuth deviation exists, and adopting the smallest value among these as the heating season average solar heat gain coefficient of the building;
The building performance prediction method according to claim 1 or 2.
前記取得ステップは、前記入力条件として、前記外皮に形成される開口部の合計開口面積を取得するステップであり、
前記算出ステップは、前記冷房期平均日射熱取得率を算出するにあたり、
取得した前記方位ブレが無のときには、前記合計開口面積を有する前記開口部の前記法線が北、東、南又は西を向く場合のそれぞれについて前記開口部における前記冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を前記開口部における前記冷房期平均日射熱取得率として採用し、
取得した前記方位ブレが有のときには、前記合計開口面積を有する前記開口部の前記法線が北東、南東、南西又は北西を向く場合のそれぞれについて前記開口部における前記冷房期平均日射熱取得率を仮に算出し、これらのうち最も大きい値を前記開口部における前記冷房期平均日射熱取得率として採用するステップである、
請求項1~3のいずれか一項に記載の建物性能予測方法。
The acquisition step is a step of acquiring a total opening area of the openings formed in the outer skin as the input condition,
In calculating the cooling season average solar heat gain coefficient, the calculation step
When the acquired azimuth deviation is absent, the cooling season average solar radiation heat acquisition coefficient at the opening is provisionally calculated for each of the cases where the normal line of the opening having the total opening area faces north, east, south, or west, and the largest value among these is adopted as the cooling season average solar radiation heat acquisition coefficient at the opening;
When the acquired azimuth deviation exists, provisionally calculating the cooling season average solar radiation heat acquisition coefficient at the opening for each of the cases where the normal line of the opening having the total opening area faces the northeast, southeast, southwest, or northwest, and adopting the largest value among these as the cooling season average solar radiation heat acquisition coefficient at the opening.
The building performance prediction method according to any one of claims 1 to 3.
前記取得ステップは、前記入力条件として、前記外皮に形成される開口部の合計開口面積を取得するステップであり、
前記算出ステップは、前記暖房期平均日射熱取得率を算出するにあたり、
取得した前記方位ブレが無のときには、前記合計開口面積を有する前記開口部の前記法線が北、東、南又は西を向く場合のそれぞれについて前記開口部における前記暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を前記開口部における前記暖房期平均日射熱取得率として採用し、
取得した前記方位ブレが有のときには、前記合計開口面積を有する前記開口部の前記法線が北東、南東、南西又は北西を向く場合のそれぞれについて前記開口部における前記暖房期平均日射熱取得率を仮に算出し、これらのうち最も小さい値を前記開口部における前記暖房期平均日射熱取得率として採用するステップである、
請求項1~4のいずれか一項に記載の建物性能予測方法。
The acquisition step is a step of acquiring a total opening area of the openings formed in the outer skin as the input condition,
In calculating the heating season average solar heat gain coefficient, the calculation step
When the acquired azimuth deviation is absent, the heating season average solar heat gain coefficient at the opening is provisionally calculated for each of the cases where the normal line of the opening having the total opening area faces north, east, south, or west, and the smallest value among these is adopted as the heating season average solar heat gain coefficient at the opening;
When the acquired azimuth deviation exists, the heating season average solar heat gain coefficient at the opening is provisionally calculated for each of the cases where the normal line of the opening having the total opening area faces the northeast, southeast, southwest, or northwest, and the smallest value among these is adopted as the heating season average solar heat gain coefficient at the opening.
The building performance prediction method according to any one of claims 1 to 4.
前記入力条件として、前記建物の屋根部の形状として寄棟及び陸屋根を含む屋根形状群のうちのいずれの屋根形状であるかの情報が含まれ、
前記算出ステップは、前記外皮の前記辺の長さとしての前記ピッチ数及び前記屋根形状の情報に基づいて、前記屋根部に搭載可能な太陽光発電パネルによる発電量を算出するステップを更に有する、
請求項1~5のいずれか一項に記載の建物性能予測方法。
The input conditions include information on which roof shape of the roof portion of the building is selected from a group of roof shapes including a hip roof and a flat roof,
The calculation step further includes a step of calculating an amount of power generated by a solar panel that can be mounted on the roof portion based on the pitch number as the length of the side of the outer skin and information on the roof shape.
The building performance prediction method according to any one of claims 1 to 5.
1以上のプロセッサに、
請求項1~6のいずれか一項に記載の建物性能予測方法を実行させる、
プログラム。
One or more processors,
Executing the building performance prediction method according to any one of claims 1 to 6,
program.
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Publication number Priority date Publication date Assignee Title
JP2009257066A (en) 2007-10-30 2009-11-05 Sekisui Chem Co Ltd Thermal environment simulation device and thermal environment display method for building
US20140129197A1 (en) 2012-11-06 2014-05-08 Cenergistic Inc. Adjustment simulation method for energy consumption
JP2016057654A (en) 2014-09-05 2016-04-21 積水化学工業株式会社 Heat insulation performance calculation system
JP2020154627A (en) 2019-03-19 2020-09-24 トヨタホーム株式会社 Insulation performance evaluation device

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