JPH0827147B2 - Heat pipe for preventing snow damage - Google Patents
Heat pipe for preventing snow damageInfo
- Publication number
- JPH0827147B2 JPH0827147B2 JP62205992A JP20599287A JPH0827147B2 JP H0827147 B2 JPH0827147 B2 JP H0827147B2 JP 62205992 A JP62205992 A JP 62205992A JP 20599287 A JP20599287 A JP 20599287A JP H0827147 B2 JPH0827147 B2 JP H0827147B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat pipe
- snow
- soil
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002689 soil Substances 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- DDMOUSALMHHKOS-UHFFFAOYSA-N 1,2-dichloro-1,1,2,2-tetrafluoroethane Chemical compound FC(F)(Cl)C(F)(F)Cl DDMOUSALMHHKOS-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 150000005827 chlorofluoro hydrocarbons Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/40—Geothermal collectors operated without external energy sources, e.g. using thermosiphonic circulation or heat pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は土壌熱を利用して地上の融雪を必要とする施
設の融雪を行ない雪害を防止するのに用いるヒートパイ
プに関するものである。Description: TECHNICAL FIELD The present invention relates to a heat pipe used to prevent snow damage by melting snow in a facility requiring snow melting on the ground by utilizing soil heat.
（従来技術） 第４図はヒートパイプを用いた電柱支線の雪害防止方
法の一例の説明図である。図面において、（Ａ）は電
柱、（Ｂ）はその支線、（１）は内部にフロン、メタノ
ール、アンモニア等の作動液（２）を封入したヒートパ
イプで、その集熱蒸発部（11）を土壌中に埋設し、その
放熱凝縮部（12）を地上の電柱支線（Ｂ）に沿わせて配
設し、土壌熱を利用して支線（Ｂ）への積雪を融かし、
支線（Ｂ）の積雪による断線事故を防止する。(Prior Art) FIG. 4 is an explanatory diagram of an example of a snow damage prevention method for a utility pole branch line using a heat pipe. In the drawing, (A) is a utility pole, (B) is its branch line, (1) is a heat pipe in which a working fluid (2) such as CFC, methanol, and ammonia is enclosed, and its heat collecting / evaporating section (11) is It is buried in soil and its heat dissipation condensing part (12) is arranged along the above-mentioned utility pole branch line (B), and the soil heat is used to melt the snow on the branch line (B).
Prevent disconnection accidents due to snow on branch line (B).
（解決しようとする問題点） 上述したような、従来のこの種の方法においては、雪
がない場合、あるいは積雪量が少なくてその高さがヒー
トパイプ（１）の地上高さに満たない場合には、ヒート
パイプ（１）の放熱凝縮部（12）が冷風にさらされるた
め、土壌熱が多量かつ無駄に大気中に放熱されるとにな
り、土壌温度が急激に低下し、必要時に充分な融雪が行
なわれないという問題点があった。(Problems to be Solved) In the conventional method of this kind as described above, when there is no snow or when the amount of snow is small and the height thereof is less than the ground height of the heat pipe (1). Since the heat radiating and condensing part (12) of the heat pipe (1) is exposed to cold air, a large amount of soil heat is wastefully radiated to the atmosphere, and the soil temperature drops sharply, which is sufficient when necessary. There was a problem that snow melting did not take place.
（問題点を解決するための手段） 本発明は上述の問題点を解消した雪害防止用ヒートパ
イプを提供するもので、その特徴は、ヒートパイプの容
器中に非凝縮性ガスを封入したことにある。(Means for Solving Problems) The present invention provides a snow damage preventing heat pipe which solves the above problems, and is characterized in that a non-condensable gas is sealed in a container of the heat pipe. is there.
第１図は本発明のヒートパイプの具体例の説明図で、
第４図と同一記号は同一部分をあらわしている。FIG. 1 is an explanatory view of a specific example of the heat pipe of the present invention,
The same symbols as those in FIG. 4 represent the same parts.
図面に示すように、内部に作動液（２）を封入したヒ
ートパイプ（１）の容器内に非凝縮性ガス（３）を封入
したものである。このようなヒートパイプ（１）の集熱
蒸発部（11）を土壌（４）中に埋設し、その放熱凝縮部
（12）を地上の融雪を必要とする施設、例えば電柱、電
柱支線、鉄塔、家屋の屋根等に沿わせて配設し、土壌熱
を利用してこれらの施設の積雪を融かす。As shown in the drawing, a non-condensable gas (3) is enclosed in a container of a heat pipe (1) in which a working fluid (2) is enclosed. The heat collecting and evaporating section (11) of such a heat pipe (1) is buried in the soil (4), and the heat radiating and condensing section (12) is a facility requiring snow melting on the ground, such as a utility pole, a utility pole branch line, or a tower. , It is installed along the roof of the house, etc., and the snow heat of these facilities is melted by using the soil heat.
前記ヒートパイプ（１）の容器内に封入する作動液
（２）としては、フロン12が適当であるが、フロン11、
フロン114、メタノール、アンモニアでもよい。又非凝
縮性ガスとしては窒素ガスが適当であるが、空気を用い
てもよい。Freon 12 is suitable as the hydraulic fluid (2) sealed in the container of the heat pipe (1).
Freon 114, methanol, or ammonia may be used. Nitrogen gas is suitable as the non-condensable gas, but air may be used.
（作用） 上述した本発明のヒートパイプによれば、積雪量
（５）がヒートパイプの地上高さ付近である場合は、第
２図に示すように、ヒートパイプ（１）の放熱凝縮部
（12）は積雪空洞部分（６）（ヒートパイプの放熱によ
る空洞）への表面放散による放熱が殆どである。いいか
えれば、ヒーパイプ（１）の放熱凝縮部（12）における
ヒートパイプ（１）とヒートパイプ周囲の空気との熱抵
抗は大きく放熱凝縮部（12）におけるヒートパイプの表
面温度は後述する積雪量（５）が少ない場合に比して高
くなる。従って、ヒートパイプ（１）の放熱凝縮部表面
温度と集熱蒸発部表面温度によってきまってくるヒート
パイプ（１）内の作動液の温度は高くなり、ヒートパイ
プ内圧（＝作動液の飽和蒸気圧に対応する）は高く、非
凝縮性ス（３）の体積は圧力に反比例するため小さくな
り、融雪不能部分は極めて小さく無視できる。(Operation) According to the heat pipe of the present invention described above, when the amount of snow (5) is near the ground height of the heat pipe, as shown in FIG. In 12), most of the heat is dissipated by surface radiation to the snow cavity (6) (cavity caused by heat dissipated by the heat pipe). In other words, the heat resistance between the heat pipe (1) and the air around the heat pipe in the heat radiating condenser (12) of the heat pipe (1) is large, and the surface temperature of the heat pipe in the heat radiating condenser (12) is equal to It is higher than when 5) is small. Therefore, the temperature of the working fluid in the heat pipe (1), which is determined by the surface temperature of the heat radiating condensing portion and the surface temperature of the heat collecting vaporizing portion of the heat pipe (1), becomes high, and the internal pressure of the heat pipe (= saturated vapor pressure of the working fluid becomes (Corresponding) is high, the volume of the non-condensable soot (3) is inversely proportional to the pressure, and becomes small.
一方、第３図に示すように積雪量が少ない場合、ある
いは積雪がない場合は、ヒートパイプの地上部分は冷風
もさらされるため、ヒートパイプ（１）の放熱凝縮部表
面温度は低くなる。従って作動液（２）の温度も低く、
内圧は低くなる（内圧は作動液の飽和蒸気曲線に従
う）。これに対して非凝縮性ガス（３）の体積はボイル
・シャルルの法則に従うので、作動液の内圧低下程下が
らず、非凝縮性ガラス（３）の体積は増加する。非凝縮
性ガス（３）はヒートパイプ（１）内上部に存在し、こ
の部分はヒートパイプとして作用しないので、この部分
でのの放熱は行われず、実質的な放熱凝縮部（12）は非
凝縮性ガス（３）滞っている以外の部分となり、非凝縮
性ガス（３）の体積増加に伴いヒートパイプの放熱量は
減少し、土壌温度の低下を防ぐことができる。On the other hand, as shown in FIG. 3, when the amount of snow is small, or when there is no snow, the surface part of the heat pipe is also exposed to cold air, so the surface temperature of the heat radiating condensing part of the heat pipe (1) becomes low. Therefore, the temperature of the hydraulic fluid (2) is low,
The internal pressure becomes low (the internal pressure follows the saturated vapor curve of the hydraulic fluid). On the other hand, since the volume of the non-condensable gas (3) follows Boyle-Charles' law, the volume of the non-condensable glass (3) does not decrease as much as the internal pressure of the working fluid decreases. Since the non-condensable gas (3) exists in the upper part of the heat pipe (1) and this part does not act as a heat pipe, heat is not radiated in this part, and the substantial heat radiating and condensing part (12) is not The condensable gas (3) becomes a part other than being stagnant, and the heat radiation amount of the heat pipe decreases as the volume of the non-condensable gas (3) increases, so that the soil temperature can be prevented from lowering.
このように、本発明のヒートパイプは積雪量に応じ
て、ヒートパイプの放熱量を変え得る働きを有するもの
であ。As described above, the heat pipe of the present invention has a function of changing the heat radiation amount of the heat pipe according to the amount of snow.
（発明の効果） 以上説明したように、本発明の雪害防止用ヒ−トパイ
プによれば、積雪量に応じた放熱量が得られるので、無
駄に土壌熱を空気中に放散することなく、土壌熱を有効
に利用できる。従って、冬期安定した放熱が得られるの
で、雪害防止に利用すると効果的である。(Effects of the Invention) As described above, according to the heat damage prevention heat pipe of the present invention, the amount of heat radiation according to the amount of snow can be obtained, so that the soil heat is not wasted into the air without waste. The heat can be used effectively. Therefore, since stable heat radiation can be obtained in winter, it is effective to use for snow damage prevention.
第１図は本発明のヒ−トパイプの具体例の説明図、第２
図及び第３図いずれも本発明ヒートパイプの作用の説明
図である。 第４図はヒートパイプを利用した雪害防止方法の一例の
説明図である。 １……ヒートパイプ、11……集熱蒸発部、12……放熱凝
縮部、２……作動液、３……非凝縮液、４……土壌、５
……積雪、６……積雪空洞部分。FIG. 1 is an explanatory view of a specific example of the heat pipe of the present invention, and FIG.
Both FIG. And FIG. 3 are explanatory views of the action of the heat pipe of the present invention. FIG. 4 is an explanatory diagram of an example of a snow damage prevention method using a heat pipe. 1 ... Heat pipe, 11 ... Heat collecting / evaporating section, 12 ... Heat dissipation condensing section, 2 ... Working fluid, 3 ... Non-condensing fluid, 4 ... Soil, 5
… Snow, 6 …… Snow cavity.
Claims (1)
し、放熱凝縮部を地上の融雪を必要とする施設に配設し
て土壌熱を利用して融雪する雪害防止用ヒートパイプに
おいて、前記ヒートパイプの容器内に非凝縮性ガスを混
入したことを特徴とする雪害防止用ヒートパイプ。1. A heat damage prevention heat pipe in which a heat collecting and evaporating portion of a heat pipe is buried in soil, and a heat radiating and condensing portion is arranged in a facility on the ground where snow melting is required to utilize the heat of the soil to melt snow. A heat pipe for snow damage prevention, characterized in that a non-condensable gas is mixed in the heat pipe container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62205992A JPH0827147B2 (en) | 1987-08-18 | 1987-08-18 | Heat pipe for preventing snow damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62205992A JPH0827147B2 (en) | 1987-08-18 | 1987-08-18 | Heat pipe for preventing snow damage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6449889A JPS6449889A (en) | 1989-02-27 |
| JPH0827147B2 true JPH0827147B2 (en) | 1996-03-21 |
Family
ID=16516112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62205992A Expired - Lifetime JPH0827147B2 (en) | 1987-08-18 | 1987-08-18 | Heat pipe for preventing snow damage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0827147B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02233957A (en) * | 1989-03-07 | 1990-09-17 | Fujikura Ltd | Low temperature storage chamber |
| CN101982719A (en) * | 2010-10-24 | 2011-03-02 | 西南交通大学 | Double-joint type hot rod |
| JP6001391B2 (en) * | 2012-09-14 | 2016-10-05 | トクデン株式会社 | Roller device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659191A (en) * | 1979-10-19 | 1981-05-22 | Hitachi Ltd | Heat pipe |
-
1987
- 1987-08-18 JP JP62205992A patent/JPH0827147B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6449889A (en) | 1989-02-27 |
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