JPS6324155B2 - - Google Patents
Info
- Publication number
- JPS6324155B2 JPS6324155B2 JP1233682A JP1233682A JPS6324155B2 JP S6324155 B2 JPS6324155 B2 JP S6324155B2 JP 1233682 A JP1233682 A JP 1233682A JP 1233682 A JP1233682 A JP 1233682A JP S6324155 B2 JPS6324155 B2 JP S6324155B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- rankine engine
- working fluid
- set value
- control 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
- 239000012530 fluid Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
-
- 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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】
本発明は作動流体を太陽熱により直接加熱する
太陽熱利用冷凍装置等に利用するランキン機関の
制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a Rankine engine used in a solar refrigeration system that directly heats a working fluid using solar heat.
この種従来例は作動流体を集熱発生器で太陽熱
により加熱し、高温高圧蒸気を発生させ、ランキ
ン機関を駆動させ冷凍装置の運転を行つていた。
しかし、日射量が低下もしくは無くなり、作動流
体の高温高圧蒸気を発生できなくなつても、いぜ
んとして作動流体ポンプを運転し続け、無駄な電
力消費を生ずる欠点があつた。また補助電動機を
使用して圧縮機を駆動する方式の場合はランキン
機関と冷凍装置の間は機械的に連結されたままで
あるのでランキン機関の出力が無いとき、逆にラ
ンキン機関が補助電動機の負荷となつてエネルギ
ーロスを生ずる欠点があつた。 In this type of conventional example, a working fluid is heated by solar heat in a heat collecting generator to generate high temperature and high pressure steam, which drives a Rankine engine to operate a refrigeration system.
However, even if the amount of solar radiation decreases or disappears and high-temperature, high-pressure steam of the working fluid cannot be generated, the working fluid pump continues to operate, resulting in wasteful power consumption. In addition, in the case of a system that uses an auxiliary motor to drive the compressor, the Rankine engine and the refrigeration system remain mechanically connected, so when there is no output from the Rankine engine, the Rankine engine is the load on the auxiliary motor. This resulted in the drawback of energy loss.
本発明は、このような従来の欠点を除去するも
ので作動流体の加熱状態とは無関係にランキン機
関を運転したり、補助電動機を運転するなどの効
率の悪い運転法を改善することを目的とするもの
である。 The present invention eliminates these conventional drawbacks and aims to improve inefficient operating methods such as operating a Rankine engine or operating an auxiliary motor regardless of the heating state of the working fluid. It is something to do.
この目的を達成するために、本発明は集熱発生
器の温度検知器と凝縮器の温度検知器よりの信号
を入力とし、ランキン機関の出力を伝達するクラ
ツチ・ランキン機関の出力不足を補う補助電動機
ランキン機関を運転する作動流体ポンプに出力と
して運転制御を行なう制御回路を設けたものであ
る。そして、この構成によつて、ランキン機関の
出力の状態を集熱発生器と凝縮器の検出温度差と
して制御回路に入力し、各出力状態に応じてラン
キン機関の運転、停止、クラツチの連結、切離し
補助電動機の運転停止を制御させることにより効
率よい運転が行なえるのである。 In order to achieve this objective, the present invention uses signals from the temperature sensor of the heat collector generator and the temperature sensor of the condenser as input, and provides an auxiliary device that compensates for the lack of output of the clutch-Rankin engine that transmits the output of the Rankine engine. The working fluid pump that operates the electric Rankine engine is provided with a control circuit that controls the operation as an output. With this configuration, the output state of the Rankine engine is input to the control circuit as the detected temperature difference between the heat collector generator and the condenser, and the Rankine engine can be operated, stopped, and clutch connected depending on each output state. Efficient operation can be achieved by controlling the stoppage of the disconnection auxiliary motor.
以下本発明の一実施例を太陽熱利用冷凍装置に
実施した例にしたがい図面にもとづいて説明す
る。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings in accordance with an example in which a solar thermal refrigeration system is implemented.
１は太陽熱により作動流体を加熱する集熱発生
器で、２は高圧蒸気を膨張させて動力を発生する
膨張機で、３は凝縮器で、４は作動流体を集熱発
生器に送り込み循環させる作動流体ポンプで、こ
れらをもつてランキン機関を構成している。５は
集熱発生器１での温度を検出するサーミスター等
の温度検知器Ａ，６は凝縮器３での温度を検出す
るサーミスター等の温度検知器Ｂ，７はランキン
機関の制御回路、８は周知の冷房サイクルからな
る冷房装置、９は膨張機の出力を伝達するクラツ
チ、１０は冷房装置８の圧縮機１１を駆動する補
助電動機である。 1 is a heat collecting generator that heats the working fluid using solar heat, 2 is an expander that expands high pressure steam to generate power, 3 is a condenser, and 4 is a working fluid that is sent to the heat collecting generator and circulated. These are working fluid pumps, which together make up the Rankine engine. 5 is a temperature sensor A such as a thermistor that detects the temperature in the heat collecting generator 1; 6 is a temperature sensor B such as a thermistor that detects the temperature in the condenser 3; 7 is a control circuit for the Rankine engine; Reference numeral 8 denotes a cooling device comprising a well-known cooling cycle, 9 a clutch for transmitting the output of the expander, and 10 an auxiliary electric motor for driving the compressor 11 of the cooling device 8.
上記実施例によれば作動流体ポンプ４によつて
ランキン機関内を循環する作動流体は集熱発生器
１で加熱されると共に膨張機２で膨張し、続いて
凝縮器３で凝縮され再び集熱発生器１へと循環す
る。一方、上記の膨張機２はクラツチ９を介して
圧縮機１１を駆動し冷房装置を運転するものであ
る。そして、このような運転を、本発明では制御
回路７によつて制御する。すなわち、温度検知器
Ａ５で集熱発生器１の、温度検知器Ｂ６で凝縮器
３のそれぞれの温度を検出し、集熱発生器１側が
凝縮器３側より高い状況下での温度差△ｔを制御
回路７が比較判断し、そして各温度差状況に応じ
て点線矢印の如く作動流体ポンプ４の運転、停止
膨張機２と圧縮機１１を連結および切離するクラ
ツチ、補助電動機１０の運転、停止を行なうそれ
ぞれの信号を次のように送り、効率のよい運転制
御を行なう。 According to the above embodiment, the working fluid circulated within the Rankine engine by the working fluid pump 4 is heated in the heat collector generator 1 and expanded in the expander 2, and then condensed in the condenser 3 to collect heat again. Circulate to generator 1. On the other hand, the above-mentioned expander 2 drives a compressor 11 via a clutch 9 to operate the cooling system. In the present invention, such operation is controlled by the control circuit 7. That is, the temperature of the heat collecting generator 1 is detected by the temperature sensor A5, and the temperature of the condenser 3 is detected by the temperature sensor B6, and the temperature difference Δt is determined under the situation where the heat collecting generator 1 side is higher than the condenser 3 side. The control circuit 7 compares and judges, and depending on each temperature difference situation, operates the working fluid pump 4, the clutch that connects and disconnects the stop expander 2 and the compressor 11, and the auxiliary motor 10, as shown by the dotted arrows. Each signal for stopping is sent as follows to perform efficient operation control.
まず、上記した温度差△ｔが設定値△t1以下の
場合にはランキン機関は冷房装置８を動かす出力
が全くないので、制御回路７より各信号が送ら
れ、作動流体ポンプ４は停止すると共にクラツチ
９は膨張機２から圧縮機１１を切離し、逆に補助
電動機１０が回転されて圧縮機１１を駆動する。
つまり、冷房装置８は出力のないランキン機関が
補助電動機１０の負荷にならないようにランキン
機関を無関係にせしめ、補助電動機１０により運
転される。 First, when the temperature difference △t mentioned above is less than the set value △t 1 , the Rankine engine has no output to operate the cooling device 8, so various signals are sent from the control circuit 7, and the working fluid pump 4 is stopped. At the same time, the clutch 9 disconnects the compressor 11 from the expander 2, and the auxiliary motor 10 is rotated to drive the compressor 11.
In other words, the cooling device 8 is operated by the auxiliary electric motor 10 by making the Rankine engine irrelevant so that the Rankine engine, which has no output, does not become a load on the auxiliary electric motor 10.
次に上記した温度差△ｔが設定値△t1以上では
あるが設定値△t2より小さい場合にはランキン機
関は冷房装置８を動かすだけの出力はあるけれど
も、不充分な状況下にある。したがつて、この時
の制御回路７は各信号をそれぞれ送り、補助電動
機１０を運転し続けると共に作動流体ポンプ４も
駆動されてランキン機関が運転され、またクラツ
チ９を作動して出力のある膨張機２を圧縮機１１
に連結し動力が伝わる。つまり、冷房装置８はラ
ンキン機関と補助電動機１０の併用で運転され
る。 Next, if the above-mentioned temperature difference △t is greater than the set value △t 1 but smaller than the set value △t 2 , the Rankine engine has enough output to operate the cooling device 8, but the output is insufficient. . Therefore, the control circuit 7 at this time sends each signal to continue operating the auxiliary motor 10, and also drives the working fluid pump 4 to operate the Rankine engine, and also operates the clutch 9 to perform expansion with output. compressor 11
is connected to transmit power. In other words, the cooling device 8 is operated using both the Rankine engine and the auxiliary electric motor 10.
次に上記した温度差△ｔが設定値△t2以上にな
つた時にはランキン機関は単独で冷房装置８を運
転するだけの出力がある。したがつて、この時の
制御回路７は各信号をそれぞれ送り、補助電動機
１０を停止させると共に作動流体ポンプ４を駆動
し続け、またクラツチ９を作動し続けて膨張機２
のみにより冷房装置８を運転する。 Next, when the above-mentioned temperature difference Δt exceeds the set value Δt 2 , the Rankine engine has enough output to operate the cooling device 8 by itself. Therefore, the control circuit 7 at this time sends each signal to stop the auxiliary motor 10 and continue to drive the working fluid pump 4, and to continue operating the clutch 9 to stop the expander 2.
The cooling device 8 is operated only by
このように本発明は各温度検知器により集熱発
生器、凝縮器の温度差△ｔを比較検出し、この温
度差△ｔが設定値△t1より小または大、そして設
定値△t1より大なる設定値△t2以上の各状況に応
じランキン機関の作動流体ポンプ、ランキン機関
の出力を冷凍サイクルに伝えるクラツチ、負荷を
駆動せしめる補助電動機をそれぞれ運転停止およ
び連結、切離する制御回路を備えているから、次
のような効果を有する。 In this way, the present invention compares and detects the temperature difference △t between the heat collection generator and the condenser using each temperature sensor, and if this temperature difference △t is smaller or larger than the set value △t 1 , then the set value △t 1 A control circuit that stops, connects, and disconnects the working fluid pump of the Rankine engine, the clutch that transmits the output of the Rankine engine to the refrigeration cycle , and the auxiliary motor that drives the load, depending on the situation where the set value △t 2 or higher. Since it is equipped with this, it has the following effects.
１ ランキン機関の出力が無い場合には負荷から
ランキン機関を切離すので、補助電動機の負荷
になることがない。1. When there is no output from the Rankine engine, the Rankine engine is disconnected from the load, so it does not become a load on the auxiliary motor.
２ ランキン機関が単独で負荷を運転する場合に
は補助電動機を負荷とは無関係にせしめ、発電
機としての負荷になるのを防止できる。2. When the Rankine engine operates a load by itself, the auxiliary motor can be made independent of the load and can be prevented from acting as a load as a generator.
３ ランキン機関の出力状況に応じ、ランキン機
関、補助電動機をそれぞれ単独および併用する
ので効率のよい運転ができ省電力化をはかれ
る。3. Depending on the output status of the Rankine engine, the Rankine engine and auxiliary motor are used individually or in combination, allowing for efficient operation and power savings.
図面は本発明装置を採用した太陽熱利用冷凍装
置の一実施例を示す構成図である。
１……集熱発生器、２……膨張機、３……凝縮
器、４……作動流体ポンプ、５，６……温度検知
器Ａ，Ｂ、７……制御回路、８……冷房装置（負
荷）、９……クラツチ、１０……補助電動機。
The drawing is a configuration diagram showing an embodiment of a solar thermal refrigeration system employing the device of the present invention. DESCRIPTION OF SYMBOLS 1... Heat collection generator, 2... Expander, 3... Condenser, 4... Working fluid pump, 5, 6... Temperature detectors A, B, 7... Control circuit, 8... Cooling device (load), 9...clutch, 10...auxiliary motor.
Claims (1)
器、膨張機、凝縮器、作動流体ポンプよりなるラ
ンキン機関と、このランキン機関に駆動される負
荷と、前記ランキン機関の出力を負荷へ伝達また
は切離するクラツチと、前記ランキン機関の出力
が無または低下した時に上記負荷を駆動する補助
電動機と、集熱発生器の温度を検出する温度検知
器Ａおよび凝縮器の温度を検出する温度検知器Ｂ
とこの両温度検知器Ａ，Ｂの信号を入力する制御
回路とを備え、この制御回路は補助電動機に運転
信号を送ると共に両温度検知器Ａ，Ｂの検出した
温度差△ｔが設定値△t1より大の場合、作動流体
ポンプに運転信号をクラツチに連結信号をそれぞ
れ送り、逆に設定値△t1より小の場合、停止信号
および切離信号をそれぞれ送るように構成したラ
ンキン機関の制御装置。 ２ 制御回路は両温度検知器Ａ，Ｂの検出した温
度差△ｔが設定値△t1より大きい設定値△t2以上
の場合に、補助電動機に停止信号を送るように構
成した特許請求の範囲第１項記載のランキン機関
の制御装置。[Scope of Claims] 1. A Rankine engine consisting of a heat collecting generator, an expander, a condenser, and a working fluid pump that heat a working fluid using solar heat, etc., a load driven by this Rankine engine, and an output of the Rankine engine. a clutch that transmits or disconnects the power to the load, an auxiliary motor that drives the load when the output of the Rankine engine is absent or reduced, a temperature sensor A that detects the temperature of the heat collector generator, and a temperature sensor A that detects the temperature of the condenser. Temperature detector B to detect
and a control circuit that inputs the signals of both temperature sensors A and B, and this control circuit sends an operation signal to the auxiliary motor and also sets the temperature difference △t detected by both temperature sensors A and B to a set value △ A Rankine engine configured to send an operating signal to the working fluid pump and a connection signal to the clutch when t is larger than 1 , and to send a stop signal and a disconnection signal when it is smaller than the set value △t 1 . Control device. 2 The control circuit is configured to send a stop signal to the auxiliary motor when the temperature difference △t detected by both temperature detectors A and B is greater than the set value △t 2 which is larger than the set value △t 1 . A control device for a Rankine engine according to scope 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233682A JPS58128474A (en) | 1982-01-27 | 1982-01-27 | Control for rankine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233682A JPS58128474A (en) | 1982-01-27 | 1982-01-27 | Control for rankine engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58128474A JPS58128474A (en) | 1983-08-01 |
| JPS6324155B2 true JPS6324155B2 (en) | 1988-05-19 |
Family
ID=11802451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1233682A Granted JPS58128474A (en) | 1982-01-27 | 1982-01-27 | Control for rankine engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58128474A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62197606A (en) * | 1986-02-25 | 1987-09-01 | Hisaka Works Ltd | Heat recovery device |
-
1982
- 1982-01-27 JP JP1233682A patent/JPS58128474A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58128474A (en) | 1983-08-01 |
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