JP5521135B2 - Cool Biz or Warm Biz achievement evaluation method - Google Patents

Description

The present invention is to assess the degree of achievement of the Warm Biz in Cool Biz or heating time, in the cooling time, to determine the quality of the air conditioning operation of the building as a target, Cool Biz to provide guidance of the appropriateness of the building of energy consumption or It relates to a method for evaluating the achievement of warm biz.

  Increasing global environmental issues require building energy conservation and energy efficiency optimization in buildings. In order to reduce energy, it is required to improve various energy efficiencies. For this purpose, a building energy management system (hereinafter abbreviated as “BEMS”) has been introduced, and air conditioning equipment and lighting equipment, etc. in the building facilities are targeted. By monitoring the situation and performing their operation control, the indoor environment and the energy consumption situation are optimized to reduce energy.

  On the other hand, reduction of greenhouse gases is urgently needed to improve the global environment, and so-called Cool Biz is being introduced as a method for that purpose. In this system, the room temperature during cooling is set to 28 ° C., and an organization or an individual makes an effort to spend comfortably in such an environment. For example, you can choose clothes that you can spend comfortably with no ties or jackets, or by placing appropriate plants on the windows and placing so-called green curtains, so even when the room temperature is set to 28 ° C. It is something that you can spend.

  On the other hand, as an environment where the indoor temperature in autumn and winter is set as low as about 20 ° C, warm biz that introduces thick shirts, heat insulating underwear, laps, etc. has been introduced so that people can spend comfortably in this environment. .

  By the way, as a technology that attempts to contribute to the optimization of energy using the BEMS, for example, Patent Document 1 discloses a building energy management device for setting the actual value of energy used in a building to a target value or less. Input the actual value of the energy used in the building at the present time, collate the entered actual value with the target value for the specified period, and display the collation result by the collating means in a monthly cumulative graph, There is disclosed a configuration including display control means for displaying a current state of the target value for the predetermined period on a display unit in either a cumulative graph in a format or a cumulative graph in a time format.

  Patent Document 2 discloses an energy monitoring apparatus that monitors energy consumption in a facility such as a business building, and displays energy consumption information related to energy consumption in the facility on a display means. This is a selection screen for selecting the measurement category when displaying the energy consumption information related to energy consumption in the market, and can be selected by separating the measurement category of the upper hierarchy by predetermined elements in the lower hierarchy A selection screen display means for displaying a selection screen on which the measurement means are hierarchized, and the display means displays a selection screen in which each of the hierarchical measurement sections is selectable, and a desired screen is displayed on the selection screen displayed by the selection screen display means. Selection means for selecting a weighing category, and energy consumption of the weighing category selected by the selection means And energy consumption information display means for displaying the energy consumption information on the display means, is configured to include a disclosed.

  Further, Patent Document 3 discloses a measurement target as a graph display device for an energy management system that can easily perform a graph display for performing a desired evaluation based on a large amount of measurement data from a large number of measuring instruments in a facility. The energy management in the facility is performed in which the graph display for performing the desired evaluation based on the measurement data obtained from a large number of measuring instruments provided for is interactively performed with the operator using the input means and the display means. A graph display device for an energy management system, an original graph storage means for storing various original graphs prepared in advance for performing a desired evaluation in which a measurement name or a time axis is defined for each axis; Displays measurement data storage and storage means for storing and storing measurement data sent from each measuring instrument, and a graph list stored in the original graph storage means The measurement data stored in the measurement data storage means relating to the measurement name of the original graph selected by the operator and the measurement data stored in the measurement data storage means are displayed to the operator and set to each axis of the original graph. A configuration is disclosed that includes means for prompting data selection, and graph display means for prompting an operator to instruct execution of graph display using the selected original graph and measurement data, and performing display according to the instruction.

JP 2008-236904 A JP 2007-199783 A JP 2005-259062 A

  By the way, building management companies that specialize in building management (hereinafter abbreviated as “buildings”) manage multiple buildings, etc., and optimize the indoor environment and energy efficiency for each building. Things are going on. For this type of optimization, for example, in the energy management apparatus described in Patent Document 1, a target value for a predetermined period is set, and a collation result obtained by collating the target value with the actual value is displayed in a monthly cumulative graph or the like. It is done to display in.

  On the other hand, in order to optimize the indoor environment of a building, it is necessary to grasp the indoor environment of each room individually. Also, because the indoor environment differs depending on the location of the building, etc., building management companies that manage multiple buildings need to understand the indoor environment of each room for each individual building. . Then, based on the grasped data such as the indoor environment, the operation of the air-conditioning equipment and the lighting equipment for adjusting the indoor environment and energy efficiency is adjusted.

  The building management company, etc., explains to the owner of the building how to adjust the operation of the air conditioner and the like to optimize the grasped indoor environment and energy efficiency. At this time, it is necessary to have materials that make it easier for the owner to understand.

  When explaining the propriety of energy efficiency to the owner of a building, it is possible to show one threshold value that is a criterion for determining the adequacy of energy efficiency, especially by referring to Cool Biz or Warm Biz. Measures to improve energy efficiency can be understood more concisely.

Therefore, the present invention pays attention to the fact that BEMS is introduced in many buildings, and based on various measurement data such as the indoor environment obtained by this BEMS, the degree of achievement of clule biz or warm biz in the building It is an object of the present invention to provide a method for evaluating the achievement of cool biz or warm biz that can be easily grasped and is useful for providing proposals for improving the energy efficiency of the building.

As a technical means for achieving the above object, the Cool Biz achievement evaluation method according to the present invention processes various data obtained by BEMS for one building, and a plurality of desired measurement locations for the building. The temperature at an arbitrary period is captured, and the average temperature at the measurement location is calculated from the temperature. The average temperature is an achieved temperature range that contributes to achieving cool biz, an unachieved temperature range that is equivalent to cool biz, and a cool biz It is divided into the inhibition temperature regions that inhibit the achievement, the ratio of the number of measurement locations existing in each of the regions is calculated, and the achievement region ratio of the number of measurement locations included in the achievement temperature region is expressed as X (%) The unachieved area ratio of the number of measurement locations included in the unachieved temperature area is Y (%), and the inhibition area ratio of the number of measurement places included in the inhibition temperature area is Z (%), Each of the growth area ratio X, the unachieved area ratio Y, and the inhibition area ratio Z is multiplied by an arbitrarily determined cool biz coefficient α1, α2, α3 to obtain a cool biz evaluation value Xc (= X × α1), Yc (= Y × α2). ), Zc (= Z × α 3), and these cool biz evaluation values Xc, Yc, Zc are determined as follows: C: Cool biz ratio = (Xc + Yc + Zc) / 10 (Formula 1)
The cool biz rate C is calculated by substituting into the cool biz rate C, the cool biz rate C is plotted on the vertical axis, and the period is plotted on the horizontal axis. It is characterized by being used as an indicator of the degree of achievement of Cool Biz.

  The cool biz coefficients α1, α2, and α3 may be arbitrarily defined numerical values. In this case, the cool biz coefficient α1 with respect to the achieved area ratio X is an advantageous value, and the cool biz coefficient with respect to the unachieved area ratio Y. α2 is set as an intermediate value, and the Cool Biz coefficient α3 for the inhibition region ratio Z is set as an unfavorable value. For example, α1 = 10, α2 = 5, and α3 = 0. As a result, each Cool Biz rating is
 Xc = X × α1 = X × 10
Yc = Y × α2 = Y × 5
 Zc = Z × α3 = Z × 0 = 0
Is calculated as
The cool biz rate C is calculated from the cool biz evaluation values Xc, Yc, and Zc according to the above equation (1).
  Then, a cool biz rate-period diagram is created with the cool biz rate C obtained as described above on the vertical axis and the period on the horizontal axis, and the transition of the cool biz rate C in the period is obtained. From the transition of the cool biz rate C, the current status of the achievement status of the cool biz rate is grasped.

  In addition, the method of evaluating the achievement of cool biz according to the invention of claim 2 superimposes the cool biz rate-period diagram for the period and the cool biz rate-period diagram for the same period of the previous year, The degree of achievement of cool biz is evaluated based on the transition of the cool biz rate by comparing with the value of.

  When grasping the degree of achievement of cool biz, it is intended to make a judgment by comparing with the cool biz rate C in the same period of the previous year.

  In addition, the cool biz achievement evaluation method according to the invention of claim 3 is used to create the cool biz rate-period diagram for a plurality of buildings and provide an index for comparing the degree of achievement of the cool biz for each of the plurality of buildings. It is characterized by.

  When introducing the Cool Biz rate C, the same value of the Cool Biz coefficient for a plurality of buildings can be used to compare the achievement status of the Cool Biz in the plurality of buildings. It can contribute to objective evaluation of achievement.

Further, the warm biz achievement evaluation method according to the invention of claim 4 processes various data obtained by BEMS for one building and captures the temperature of one period at a desired measurement location for the building. The average temperature at the measurement location is calculated from the temperature, and the average temperature is an achievement temperature region contributing to the achievement of the warm biz, an unachieved temperature region equivalent to the warm biz, and the achievement of the warm biz is inhibited. It is divided into the inhibition temperature regions, the ratio of the number of measurement locations existing in each of the regions is calculated, the achievement region ratio of the number of measurement locations included in the achievement temperature region is X (%), and the unachieved temperature region The unachieved area ratio of the number of measurement locations included in Y is defined as Y (%), and the inhibition area ratio of the number of measurement locations included in the inhibition temperature area is defined as Z (%), and the achieved area ratio X and the unachieved area ratio Y , Warm biz evaluation values Xw (= X.times..beta.1), Yw (= Y.times..beta.2), Zw (= Z.times..beta.3) are obtained by multiplying each harmed area ratio Z by an arbitrarily determined warm biz coefficient .beta.1, .beta.2, .beta.3. The warm biz evaluation values Xw, Yw, and Zw are calculated as follows: W: Warm biz rate = (Xw + Yw + Zw) / 10 (Formula 2)
The warm biz rate W is obtained by substituting into the above, and a warm biz rate-period diagram with the warm biz rate W on the vertical axis and the period on the horizontal axis is created and obtained from the warm biz rate-period diagram. Based on the transition of the warm biz rate, it is used as an indicator of the degree of achievement of warm biz.

  The warm biz coefficients β1, β2, and β3 may be arbitrarily determined numerical values. In this case, the warm biz coefficient β1 for the achievement range X is an advantageous value, and the warm biz coefficient for the unachieved range Y. The coefficient β2 is set as an intermediate value, and the warm biz coefficient β3 for the inhibition range Z is set as an unfavorable value. For example, β1 = 10, β2 = 5, and β3 = 0. Thereby, each warm biz evaluation value is
 Xw = X × β1 = X × 10
Yw = Y × β2 = Y × 5
 Zw = Z × β3 = Z × 0 = 0
Is calculated as
  The warm biz rate W is calculated from the warm biz evaluation values Xw, Yw, and Zw by the above equation 2.
  Then, the warm biz rate W obtained as described above is plotted on the vertical axis and the warm biz rate-period diagram is plotted on the horizontal axis, and the transition of the warm biz rate W in the period is obtained. From the transition of the warm biz rate W, the current status of the achievement status of the warm biz rate is grasped.

  Further, the warm biz achievement evaluation method according to the invention of claim 5 is characterized in that the warm biz rate-period diagram for the period is overlapped with the warm biz rate-period diagram for the same period of the previous year to superimpose the warm biz rate. It is characterized by evaluating the degree of achievement of warm biz based on the transition of the warm biz rate by comparing with the value for the same period of the previous year.

  When grasping the degree of achievement of warm biz, it is intended to make a comparison with the warm biz rate W during the same period of the previous year.

The warm biz achievement evaluation method according to the invention of claim 6 is an index for preparing the warm biz rate-period diagram for a plurality of buildings and comparing the degree of achievement of the warm biz for each of the plurality of buildings. It is characterized by being used.

  When the warm biz rate C is introduced, by using the same value for the warm biz coefficient for a plurality of buildings, the achievement status of the warm biz in the plurality of buildings can be compared. It can contribute to objective evaluation of the achievement of warm biz in buildings.

According to the cool biz achievement evaluation method according to the present invention, it is possible to make an objective judgment because it is possible to make an objective judgment as a cool biz rate and to make a judgment based on a numerical value. Further, the degree of achievement of the cool biz of the building can be visually confirmed reliably, easily and quickly by the cool biz rate-period diagram . Thereby, the policy which improves the energy efficiency of the said building can be taken.

  In addition, according to the cool biz achievement evaluation method according to the invention of claim 2, it is possible to grasp the long-term response to the cool biz, and to surely improve the energy efficiency.

  Moreover, according to the cool biz achievement evaluation method according to the invention of claim 3, since the achievement status of cool biz among a plurality of buildings can be grasped at the same time, the energy efficiency more suitable for the building is improved with respect to the corresponding building. It can contribute to the study of measures.

Further, according to the warm biz achievement evaluation method according to the fourth aspect of the present invention, it is possible to make a judgment based on a numerical value having an objective property as a warm biz rate, so that an objective judgment can be made. In addition, it is possible to quickly, surely and easily grasp the degree of achievement of the warm biz in the building visually by using the warm biz rate-period diagram. Thereby, the policy which improves the energy efficiency of the said building can be taken.

  Further, according to the warm biz achievement evaluation method according to the invention of claim 5, it is possible to evaluate the introduction of the warm biz for a long period of time and effectively cope with the improvement of the energy efficiency.

  In addition, according to the warm biz achievement evaluation method according to the invention of claim 6, since the achievement status of the warm biz among a plurality of buildings can be grasped at the same time, the energy efficiency more suitable for the building concerned can be obtained. It can contribute to the study of measures to improve.

FIG. 3 is a pie chart used in the cool biz achievement evaluation method according to the present invention, and the measurements included in each of the cool biz achieved temperature area, the unachieved temperature area, and the inhibition temperature area for the building from which the list shown in FIG. 2 is obtained. It is a pie chart which shows the ratio of a place. It is a table | surface which shows the temperature acquired about one building in order to implement the cool biz achievement evaluation method which concerns on this invention. It is a table | surface which compares the cool biz rate of the same period in the past 3 years, and has shown the ratio and cool biz rate of an achievement temperature area | region, an unachieved temperature area | region, and an inhibition temperature area | region. It is a graph which shows transition of the ratio of the number of measurement places contained in the achieved temperature area | region shown in FIG. 3, an unachieved temperature area | region, and an inhibition temperature area | region. It is a cool biz rate-period diagram which shows transition of the cool biz rate shown in FIG. It is a table | surface which shows the temperature acquired about one building in order to implement the achievement evaluation method of the warm biz which concerns on this invention. FIG. 7 is a pie chart showing the proportion of measurement locations included in each of the achieved temperature range, unachieved temperature region, and inhibition temperature region of the warm biz for the building from which the list shown in FIG. 6 is obtained.

  Hereinafter, based on the preferred embodiment shown in the drawings, the achievement evaluation method for Coolvis or Warm Biz according to the present invention will be described in detail.

In FIGS. 1 to 5, there is shown a diagram like that is used to achieve the evaluation method of the Cool Biz. FIG. 2 is a table showing the results of measuring the temperature for an arbitrary building. This building is 24 stories high and shows the average temperature, maximum temperature, minimum temperature, and set temperature for 92 measurement locations excluding the 2nd floor by dividing each floor into 4 zones. Of these, the average temperature of 27.5 ° C or higher is the temperature range where cool biz is achieved, the average temperature range of 26.5-27.5 ° C is the unachieved temperature range in accordance with the achievement of cool biz, and the temperature below 26.5 ° C is the inhibition temperature that inhibits the achievement of cool biz. It is an area. In addition, the measurement location in the achievement temperature range is displayed in a double-line frame, and the measurement location in the inhibition temperature region is drawn with one diagonal line in the frame, which is inconvenient for achieving cool biz in the inhibition temperature range. For the measurement points below 25 ° C that need to be improved quickly, two diagonal lines are drawn in the frame.

  FIG. 1 is a pie chart showing the ratio of the number of measurement points included in each temperature region shown in FIG. 2, and the achievement region ratio X of the measurement points where the portion drawn with a diagonal line rising to the right is in the achievement temperature region, Indicates the inhibition area ratio Z of the measurement location where the portion drawn with the diagonal line rising to the left is in the inhibition temperature region, and the unachieved region proportion Y of the measurement location where the portion without drawing is in the unachieved temperature region The area ratio is 36%, the unachieved area ratio is 42%, and the inhibition area ratio is 22%.

FIG. 3 is a list showing the implementation status of Cool Biz over the past three years measured for the building shown in FIG. 1, and is the data for July and August of each year. The list shown in FIG. Data for July of the year. The change in the ratio shown in this list is shown in FIG. 4, where the vertical axis represents the implementation ratio (%) and the horizontal axis represents the measurement period. FIG. 5 shows a transition of the cool biz rate C , and is a cool biz rate-period diagram in which the vertical axis represents the cool biz rate C and the horizontal axis represents the measurement period .

The Cool Biz rate C is
C: Cool Biz rate = (Xc + Yc + Zc) / 10 (Formula 1)
Is required.
Xc, Yc, and Zc in Equation 1 are cool biz evaluation values, and are obtained by multiplying the implementation ratio (%) by cool biz coefficients α1, α2, and α3.

  The cool biz coefficients α1, α2, α3 are numerical values for calculating a cool biz evaluation value that is an index of the degree of achievement of cool biz, and may be arbitrarily determined, but are constant for a single building, When comparing the cool biz rates of buildings, in order to provide objectivity in the comparison of the cool biz rates between the buildings, the plurality of buildings are also constant. For example, the cool biz coefficient α1 multiplied by the achievement region ratio X has a large evaluation point for achieving the cool biz (α1 = 10), and the inhibition region ratio does not contribute to the achievement of the cool biz (α3 = 0). ), And since the unachieved area ratio is an intermediate area (α2 = 5).

Here, the calculation of the cool biz rate C will be described by exemplifying August 2008 shown in FIG.
Since the achievement area ratio X is 14%, the Cool Biz evaluation value Xc is
Xc = X × α1 = 14 × 10 = 140 (Formula 3)
Similarly,
Yc = Y × α2 = 40 × 5 = 200 (Formula 4)
Zc = Z × α3 = 46 × 0 = 0 (Formula 5)
Substituting these Cool Biz evaluation values into Equation 1 above,
Cool Biz rate C = 140 + 200 + 0/10 = 34 (Formula 6)
The Cool Biz rate is acquired as “C34”.

  Then, by comparing the cruise biz rate C acquired as described above, it is possible to grasp the degree of achievement of cool biz in the corresponding building and examine measures for improvement. In other words, referring to the Cool Biz Rate C for July 2010 in the implementation situation shown in FIG. 3, it is “C57”, an increase of 23 points from the Cool Biz Rate “C34” in August 2008. The degree of achievement of Cool Biz has improved. In August 2010, it became “C50” and it can be understood that the points were reduced. In addition, as shown in FIG. 5, the transition of the cool biz rate C can be easily grasped by graphing, and it is possible to quickly determine whether there is room for improvement.

  In the above description, the case of grasping and verifying the degree of achievement of cool biz for an arbitrary building has been described. However, when comparing the degree of achievement of cool biz for a plurality of buildings, the cool biz rate C is also used. Can do.

  Next, the warm biz achievement evaluation method according to the present invention will be described with reference to FIGS.

FIG. 6 is a table showing the results of measuring the temperature at the same measurement location for the building for which the cool biz rate shown in FIG. 1 was evaluated. In this building, there are few heating systems, and the heating system is used only for the first zone and the second zone on the 17th and 18th floors. The average temperature is 21.0 ° C or less, the achieved temperature region, 22 ° C is the unachieved temperature region, 23.0 ° C or more is the inhibition temperature region, and the warm biz coefficients β1, β2, and β3 correspond to each, and are included in each region By multiplying the ratio of the measurement points by these warm-biz coefficients β1, β2, and β3, the warm-biz evaluation values Xw, Yw, and Zw are calculated, and these warm-biz evaluation values are substituted into the following equation to obtain the warm-biz rate W. .
W: Warm Biz rate = (Xw + Yw + Zw) / 10 (Formula 2)
As shown in the list shown in FIG. 6, warm biz has not been achieved in any zone in the heating area of this building.

  FIG. 7 is a pie chart showing the ratio of the number of measurement points included in each temperature region shown in FIG. In this building, since there are few heating systems, a diagonal line is drawn in the range which shows the ratio of the measurement location in the achievement temperature range, and nothing is drawn in other parts. Note that the achievement temperature region and the inhibition temperature region are 0%, so they do not appear in the pie chart. For the sake of convenience, the ratio without the heating system is added to the achieved temperature region, and this is noted.

  This Warm Biz rate W can also be used as an index for comparing the degree of achievement of Warm Biz in other buildings, and as an index for judging the transition of the Warm Biz rate W in any building during the same period of the previous year. You can also.

According to achieve the evaluation method of the Cool Biz or warm Biz according to the present invention, can grasp the degree achieved Cool Biz or Warm Biz easily, since the owner of the building can easily grasp the necessity of improving the indoor environment and energy efficiency , Contribute to the promotion of these improvements.

X Achieved area ratio Y Unachieved area ratio Z Inhibited area ratio

Claims (6)

Process various data obtained by BEMS for one building,
Capturing the temperature of any period in desired measurement location at a plurality of points for the building,
Calculate the average temperature at the measurement location from the temperature,
The average temperature is divided into an achieved temperature region that contributes to achieving cool biz, an unachieved temperature region that conforms to cool biz, and an inhibition temperature region that inhibits achieving cool biz,
The ratio of the number of measurement locations existing in each of the regions is calculated, the achievement region ratio of the number of measurement locations included in the achievement temperature region is X (%), and the number of measurement locations included in the unachieved temperature region is not yet calculated. The achievement area ratio is Y (%), and the inhibition area ratio of the number of measurement locations included in the inhibition temperature area is Z (%).
Each of the achieved area ratio X, the unachieved area ratio Y, and the inhibition area ratio Z is multiplied by an arbitrarily determined cool biz coefficient α1, α2, α3 to obtain a cool biz evaluation value Xc (= X × α1), Yc (= Y × α2), Zc (= Z × α3)
These Cool Biz evaluation values Xc, Yc, Zc are C: Cool Biz rate = (Xc + Yc + Zc) / 10 (Formula 1)
Substituting into, the cool biz rate C is obtained,
Create a Cool Biz Rate-Period Diagram with the Cool Biz Rate C on the vertical axis and the Period on the horizontal axis, and an index of the degree of achievement of Cool Biz based on the transition of the Cool Biz Rate determined from the Cool Biz Rate-Period Diagram A cool biz achievement evaluation method characterized by being provided for.   Based on the transition of the cool biz rate by superimposing the cool biz rate-period diagram for the period and the cool biz rate-period diagram for the same period of the previous year, and comparing the cool biz rate with the value for the same period of the previous year, The achievement evaluation method for cool biz according to claim 1, wherein the achievement degree of cool biz is evaluated.   2. The cool biz achievement evaluation method according to claim 1, wherein the cool biz rate-period diagram is created for a plurality of buildings and used as an index for comparing the degree of achievement of the cool biz for each of the plurality of buildings. Process various data obtained by BEMS for one building,
Capturing the temperature of one period in the desired measurement location for the building,
Calculate the average temperature at the measurement location from the temperature,
The average temperature is divided into an achieved temperature region that contributes to the achievement of warm biz, an unachieved temperature region that conforms to warm biz, and an inhibition temperature region that inhibits the achievement of warm biz,
The ratio of the number of measurement locations existing in each of the regions is calculated, the achievement region ratio of the number of measurement locations included in the achievement temperature region is X (%), and the number of measurement locations included in the unachieved temperature region is not yet calculated. The achievement area ratio is Y (%), and the inhibition area ratio of the number of measurement locations included in the inhibition temperature area is Z (%).
Warm biz evaluation values Xw (= X × β1), Yw (=) are obtained by multiplying the achieved region ratio X, the unachieved region ratio Y, and the inhibition region ratio Z by arbitrarily determined warm biz coefficients β1, β2, and β3, respectively. Y × β2), Zw (= Z × β3)
These warm biz evaluation values Xw, Yw, Zw are W: Warm Biz rate = (Xw + Yw + Zw) / 10 (Formula 2)
Substituting into, find the warm biz rate W,
A warm biz rate-period diagram is created with the warm biz rate W on the vertical axis and the period on the horizontal axis, and based on the transition of the warm biz rate determined from the warm biz rate-period diagram, A method for evaluating the achievement of warm biz, characterized by being used as an indicator of the degree of achievement of   Overlap the warm biz rate-period diagram for the period and the warm biz rate-period diagram for the same period of the previous year, and compare the warm biz rate with the value for the same period of the previous year to change the warm biz rate. 5. The warm biz achievement evaluation method according to claim 4, wherein the degree of achievement of the warm biz is evaluated based on the evaluation.   The achievement of warm biz according to claim 4, wherein the warm biz rate-period diagram is created for a plurality of buildings and used as an index for comparing the achievement degree of the warm biz for each of the plurality of buildings. Evaluation method.

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