JPH0230691Y2 - - Google Patents
Info
- Publication number
- JPH0230691Y2 JPH0230691Y2 JP1983130198U JP13019883U JPH0230691Y2 JP H0230691 Y2 JPH0230691 Y2 JP H0230691Y2 JP 1983130198 U JP1983130198 U JP 1983130198U JP 13019883 U JP13019883 U JP 13019883U JP H0230691 Y2 JPH0230691 Y2 JP H0230691Y2
- Authority
- JP
- Japan
- Prior art keywords
- circulation
- heat
- air
- medium
- circuit
- 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
Links
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 238000013022 venting Methods 0.000 claims description 16
- 238000005338 heat storage Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 15
- 230000007423 decrease Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は強制循環式太陽熱集熱システムの集熱
回路に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heat collection circuit for a forced circulation solar heat collection system.
（従来の技術）
太陽熱集熱システムは、太陽熱集熱器と熱を蓄
えて置く蓄熱槽と、これらの間に熱媒を循環させ
るための循環配管により熱媒の循環回路が構成さ
れている。この循環回路には開放型循環回路と密
閉型循環回路とがある。(Prior Art) In a solar heat collection system, a heat medium circulation circuit is configured by a solar heat collector, a heat storage tank for storing heat, and circulation piping for circulating a heat medium between them. This circulation circuit includes an open circulation circuit and a closed circulation circuit.
密閉型循環回路にあつては、高温下で熱媒が沸
騰して太陽熱集熱器が破損することから、循環回
路中に循環回路の圧力を下げる安全弁等を設けな
ければならず、回路構成が複雑になるという問題
があつた。 In the case of a closed circulation circuit, the heating medium will boil under high temperatures and damage the solar collector, so a safety valve must be installed in the circulation circuit to reduce the pressure in the circulation circuit, and the circuit configuration must be changed. The problem was that it was complicated.
一方、開放型循環回路においては、従来から第
１図に示すような空気抜き兼用開放型貯湯タンク
を設けた集熱回路が提案されている（例えば実開
昭56−101546号公報参照）。第１図において、１
は太陽熱を収集するための集熱器であり、その吸
込部には送りパイプ２を介して循環ポンプ３が接
続されると共に、吐出部には戻りパイプ４を介し
て熱交換器５が接続されている。６はその吸込口
部を上記熱交換器５に、又吐出口部を循環ポンプ
３にそれぞれ接続した空気抜き兼用開放型貯湯タ
ンクである。 On the other hand, as for open circulation circuits, a heat collection circuit having an open hot water storage tank for air venting as shown in FIG. 1 has been proposed (see, for example, Japanese Utility Model Application Publication No. 101546/1983). In Figure 1, 1
is a heat collector for collecting solar heat, and a circulation pump 3 is connected to its suction part through a feed pipe 2, and a heat exchanger 5 is connected to its discharge part through a return pipe 4. ing. Reference numeral 6 designates an open type hot water storage tank that also serves as an air vent and has its suction port connected to the heat exchanger 5 and its discharge port connected to the circulation pump 3.
太陽熱集熱器１での熱媒は太陽熱の熱吸収によ
り高温となるほど気泡の発生は多くなるが、この
気泡は空気抜き兼用開放型貯湯タンク６の密閉状
態でない蓋部分から外部に放出され、加熱による
体積膨張も空気抜き兼用開放型貯湯タンク６によ
つて吸収される。 The heat medium in the solar heat collector 1 absorbs solar heat, and the higher the temperature, the more bubbles are generated, but these bubbles are released to the outside from the lid of the open hot water storage tank 6, which also serves as an air vent, and are heated. Volumetric expansion is also absorbed by the open hot water storage tank 6 which also serves as an air vent.
（考案が解決しようとする問題点）
しかしこの方式では、タンク６部分で循環中の
熱媒が外気に接することになるために熱媒が減少
しやすく集熱運転時に循環する熱媒の量を多く要
してしまい集熱の応答が遅くなるとともに集熱効
率が低下する。また高温集熱時には空気抜き兼用
開放型貯湯タンク６内全体の熱媒の温度が上昇す
るが、空気と接する面積が大きくなつているため
熱媒の蒸発や放熱が促進され、その結果、効率低
下はもとより熱媒の減少を早め熱媒の寿命が短く
なるという欠点があつた。(Problem that the invention aims to solve) However, with this method, the heating medium circulating in the tank 6 comes into contact with the outside air, so the amount of heating medium tends to decrease, and the amount of circulating heating medium during heat collection operation is reduced. This requires a large amount of heat, which slows down the heat collection response and reduces heat collection efficiency. In addition, during high-temperature heat collection, the temperature of the entire heat medium inside the open hot water storage tank 6 that also serves as an air vent rises, but since the area in contact with the air is large, evaporation and heat radiation of the heat medium is promoted, and as a result, efficiency decreases. Of course, there was a drawback that the heat medium decreased quickly and the life of the heat medium was shortened.
（考案の目的）
本考案による太陽熱集熱回路は、かかる欠点を
解消するものであり、熱媒の沸騰による太陽熱温
水気や循環配管の破損等を防止し、メンテナンス
を極少にし、かつ集熱効率を向上させることを目
的とするものである。(Purpose of the invention) The solar heat collecting circuit according to the present invention eliminates these drawbacks, prevents damage to solar hot water and circulation piping due to boiling of the heating medium, minimizes maintenance, and improves heat collection efficiency. The purpose is to improve
（問題点を解決するための手段）
本考案に係る太陽熱集熱回路によれば、太陽熱
集熱器と蓄熱槽に設けられた熱交換器とを循環配
管にて接続し、この循環配管中に強制循環用の循
環ポンプを設けてなる太陽熱集熱回路において、
前記循環ポンプの吸込側に開放型膨張吸収タンク
を前記循環配管から分岐して接続し、該開放型膨
張吸収タンクの接続部分と前記熱交換器との間の
循環配管中に熱媒の流入口と流出口とを有する空
気抜き手段を設けたことを特徴とし、そのことに
より上記目的が達成される。(Means for Solving the Problems) According to the solar heat collecting circuit according to the present invention, the solar heat collector and the heat exchanger provided in the heat storage tank are connected by a circulation pipe, and the heat exchanger provided in the heat storage tank is connected with the circulation pipe. In a solar heat collection circuit equipped with a circulation pump for forced circulation,
An open expansion absorption tank is branched from the circulation piping and connected to the suction side of the circulation pump, and an inflow port for the heat medium is provided in the circulation piping between the connection part of the open expansion absorption tank and the heat exchanger. The present invention is characterized by providing an air venting means having an outlet and an outlet, thereby achieving the above object.
（実施例）
以下本考案を第２図に示す実施例に基づいて詳
細に説明する。(Example) The present invention will be described in detail below based on the example shown in FIG.
第２図に示すように太陽熱集熱回路には、太陽
熱集熱器７、循環配管８、循環ポンプ９、熱交換
器１０、及び蓄熱槽１１が設けられている。 As shown in FIG. 2, the solar heat collector circuit is provided with a solar heat collector 7, a circulation pipe 8, a circulation pump 9, a heat exchanger 10, and a heat storage tank 11.
前記循環ポンプ９の吸込側と熱交換器１０の熱
媒出口との間に空気抜き手段１２が設けられてい
る。この空気抜き手段１２は、循環配管８中の空
気を取り除くためのものであり、循環配管８より
も管径を太くして流速を低下させ気泡が分離しや
すいようにした気水分離器１２ｂと気水のうちの
空気だけを抜く空気抜き弁１２ａとからなる。ま
た、この空気抜き手段１２には、熱媒が通過する
ように熱媒の流入口と流出口が設けられている。
なお、この空気抜き手段１２は、上端部が開口し
たタンク構造のものに熱媒の流入口と流出口を設
けてタンク内で熱媒の流速を低下させて通過させ
るようにしたものであつてもよい。 Air venting means 12 is provided between the suction side of the circulation pump 9 and the heat medium outlet of the heat exchanger 10. This air venting means 12 is for removing the air in the circulation piping 8, and includes a steam separator 12b which has a diameter larger than that of the circulation piping 8 to reduce the flow velocity and facilitate the separation of air bubbles. It consists of an air vent valve 12a that extracts only air from the water. Further, the air venting means 12 is provided with an inlet and an outlet for the heat medium so that the heat medium passes therethrough.
Note that this air venting means 12 may have a tank structure with an open top end provided with an inlet and an outlet for the heat medium so that the flow rate of the heat medium is reduced within the tank and the heat medium is allowed to pass through the tank. good.
前記循環ポンプ９の吸込側と空気抜き手段１２
との間の循環配管には、膨張吸収タンク１３が一
本の配管によつて循環配管８から分岐して接続さ
れている。この膨張吸収タンク１３は、熱媒の膨
張吸収と沸騰時に戻つてくる熱媒を吸収できるに
十分な容量のものが使用される。 The suction side of the circulation pump 9 and the air venting means 12
An expansion absorption tank 13 is connected to the circulation pipe 8 by branching from the circulation pipe 8 through a single pipe. This expansion absorption tank 13 has a capacity sufficient to absorb the expansion of the heat medium and the heat medium that returns at the time of boiling.
前記空気抜き手段１２と膨張吸収タンク１３と
の間には、止水バルブ１４が設けられている。シ
ステムの始動時に熱媒が膨張吸収タンク１３から
循環回路内に注入されるが、この熱媒の注入時に
は循環配管中に空気が残つている。この注入時に
循環配管中にある空気を押し出すために、止水バ
ルブ１４を閉成して循環ポンプ９を駆動すること
により空気抜き手段１２から循環配管中の空気を
抜く。従つて、循環回路内に一旦熱媒を注入した
後には、循環ポンプ９の駆動時や停止時にかかわ
らずこの止水バルブ１４は常に開放状態に維持し
ておけばよい。また、熱媒の注入時に止水バルブ
１４を閉成しなくても循環配管中の空気は空気抜
き手段１２から時間は若干かかるが抜ける。従つ
て、この止水バルブ１４は必ずしも必須不可欠で
はない。なお、高温下で熱媒が沸騰して気泡が大
量に発生したような場合にも、止水バルブ１４を
閉成して循環ポンプ９を駆動することにより循環
配管中の空気を抜いてもよいが、止水バルブ１４
を閉成しなくても熱媒を循環させれば空気抜き手
段１２から自然に抜ける。 A water stop valve 14 is provided between the air venting means 12 and the expansion absorption tank 13. When the system is started, a heating medium is injected into the circulation circuit from the expansion absorption tank 13, but air remains in the circulation piping at the time of injection of this heating medium. In order to push out the air in the circulation piping during this injection, the water stop valve 14 is closed and the circulation pump 9 is driven to evacuate the air in the circulation piping from the air venting means 12. Therefore, once the heat medium is injected into the circulation circuit, the water stop valve 14 may be kept open at all times regardless of whether the circulation pump 9 is being driven or stopped. Further, even if the water stop valve 14 is not closed when the heating medium is injected, the air in the circulation pipe can escape from the air venting means 12, although it takes some time. Therefore, this water stop valve 14 is not necessarily essential. In addition, even if the heat medium boils under high temperature and a large amount of bubbles are generated, the air in the circulation piping may be removed by closing the water stop valve 14 and driving the circulation pump 9. However, the water stop valve 14
Even if the heating medium is not closed, if the heating medium is circulated, it will naturally escape from the air venting means 12.
かかる構成において、システムの始動時に止水
バルブ１４を閉成して、循環ポンプ９を駆動しな
がら膨張吸収タンク１３から熱媒を循環回路内に
注入して、循環回路内の空気を空気抜き手段１２
から追い出し、循環回路内に熱媒が充満したとき
に止水バルブ１４を開放して循環回路内に熱媒を
循環させることによつて集熱運転を行う。以後、
止水バルブ１４は、常に開放状態が維持される。
集熱運転中（熱媒循環中）でも、熱媒中に空気が
存在すれば空気抜き手段１２から放出する。ま
た、集熱運転中に熱媒が沸騰状態となつて循環配
管中の圧力が上昇すれば、循環配管中の熱媒が膨
張吸収タンク１３に戻り、循環配管中の圧力がさ
がつて太陽熱集熱器の破損などが防止される。 In this configuration, when the system is started, the water stop valve 14 is closed, and the heat medium is injected into the circulation circuit from the expansion absorption tank 13 while the circulation pump 9 is driven, and the air in the circulation circuit is removed by the air venting means 12.
When the circulating circuit is filled with the heat medium, the water stop valve 14 is opened to circulate the heat medium in the circulation circuit, thereby performing heat collection operation. From then on,
The water stop valve 14 is always kept open.
Even during heat collection operation (during heat medium circulation), if air is present in the heat medium, it is released from the air venting means 12. In addition, if the heat medium boils during heat collection operation and the pressure in the circulation pipe increases, the heat medium in the circulation pipe returns to the expansion absorption tank 13, the pressure in the circulation pipe decreases, and the solar heat is collected. This prevents damage to the heater.
集熱運転が終了するときには、循環ポンプ９を
停止する。なお、循環ポンプ９が停止しても、サ
イホンの原理によつて、循環配管中には熱媒が充
填されたままの状態が維持される。従つて、次に
集熱運転を開始するときは、循環ポンプ９を駆動
するだけでよい。 When the heat collection operation ends, the circulation pump 9 is stopped. Note that even if the circulation pump 9 is stopped, the heating medium remains filled in the circulation piping due to the siphon principle. Therefore, when starting the heat collection operation next time, it is sufficient to simply drive the circulation pump 9.
また、循環回路中の熱媒が減つた場合には、膨
張吸収タンク１３の上蓋を開いて補充する。 Moreover, when the heat medium in the circulation circuit is reduced, the top cover of the expansion absorption tank 13 is opened to replenish the heat medium.
（考案の効果）
以上のように、本考案の太陽熱集熱回路によれ
ば、循環ポンプの吸込側に容量の大きい開放型膨
張吸収タンクを循環回路から分岐して接続したこ
とから、通常の集熱運転時にはこの開放型膨張吸
収タンクを熱媒が通過することはなく、もつて循
環中の熱媒がこの容量の大きい膨張吸収タンクで
空気と接触することはなく、したがつて放熱が著
しく低減して集熱効率が向上すると共に熱媒も減
少しにくくなつて寿命がのびる。(Effects of the invention) As described above, according to the solar heat collecting circuit of the present invention, a large-capacity open expansion absorption tank is branched from the circulation circuit and connected to the suction side of the circulation pump. During thermal operation, no heating medium passes through this open expansion/absorption tank, and the circulating heating medium does not come into contact with air in this large capacity expansion/absorption tank, thus significantly reducing heat dissipation. As a result, heat collection efficiency is improved and the amount of heat medium is less likely to decrease, extending the service life.
また、開放型膨張吸収タンクの接続部分と前記
熱交換器との循環配管中に熱媒の流入口と流出口
とを有する空気抜き手段を設けたことから、放熱
を少なくして熱媒中の空気を抜くことができる。 In addition, since an air venting means having an inlet and an outlet for the heating medium is provided in the circulation piping between the connection part of the open expansion and absorption tank and the heat exchanger, the heat radiation can be reduced and the air in the heating medium can be removed. can be removed.
第１図は従来の太陽熱集熱回路の構成図であ
り、第２図は本考案の太陽熱集熱回路の構成図で
ある。
７……太陽熱集熱器、８……循環配管、９……
循環ポンプ、１０……熱交換器、１１……蓄熱
槽、１２……空気抜き手段６、１３……開放型膨
張吸収タンク。
FIG. 1 is a configuration diagram of a conventional solar heat collection circuit, and FIG. 2 is a configuration diagram of a solar heat collection circuit according to the present invention. 7...Solar heat collector, 8...Circulation piping, 9...
Circulation pump, 10... Heat exchanger, 11... Heat storage tank, 12... Air venting means 6, 13... Open type expansion absorption tank.
Claims (1)
を循環配管にて接続し、この循環配管中に強制循
環用の循環ポンプを設けてなる太陽熱集熱回路に
おいて、前記循環ポンプの吸込側に開放型膨張吸
収タンクを前記循環配管から分岐して接続し、該
開放型膨張吸収タンクの接続部分と前記熱交換器
との間の循環配管中に熱媒の流入口と流出口とを
有する空気抜き手段を設けたことを特徴とする太
陽熱集熱回路。 In a solar heat collection circuit in which a solar heat collector and a heat exchanger provided in a heat storage tank are connected by a circulation pipe, and a circulation pump for forced circulation is provided in the circulation pipe, the suction side of the circulation pump is An open expansion absorption tank is branched from and connected to the circulation piping, and the circulation piping between the connection part of the open expansion absorption tank and the heat exchanger has an inlet and an outlet for the heat medium. A solar heat collecting circuit characterized by being provided with an air venting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13019883U JPS6037770U (en) | 1983-08-22 | 1983-08-22 | solar heat collection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13019883U JPS6037770U (en) | 1983-08-22 | 1983-08-22 | solar heat collection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037770U JPS6037770U (en) | 1985-03-15 |
| JPH0230691Y2 true JPH0230691Y2 (en) | 1990-08-17 |
Family
ID=30294761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13019883U Granted JPS6037770U (en) | 1983-08-22 | 1983-08-22 | solar heat collection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037770U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0615273Y2 (en) * | 1987-01-08 | 1994-04-20 | 矢崎総業株式会社 | Solar heat collection circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924927Y2 (en) * | 1981-03-20 | 1984-07-23 | 三洋電機株式会社 | solar heat collector |
-
1983
- 1983-08-22 JP JP13019883U patent/JPS6037770U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6037770U (en) | 1985-03-15 |
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