TWI427253B - Heating system for low temperature heat source - Google Patents
Heating system for low temperature heat source Download PDFInfo
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- TWI427253B TWI427253B TW100122045A TW100122045A TWI427253B TW I427253 B TWI427253 B TW I427253B TW 100122045 A TW100122045 A TW 100122045A TW 100122045 A TW100122045 A TW 100122045A TW I427253 B TWI427253 B TW I427253B
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- heat
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- unit
- compressor
- low temperature
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- 238000010438 heat treatment Methods 0.000 title description 9
- 238000005338 heat storage Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 description 17
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Engine Equipment That Uses Special Cycles (AREA)
Description
本發明係關於一種熱泵系統，尤其是一種低溫熱源利用之熱泵系統。The present invention relates to a heat pump system, and more particularly to a heat pump system utilizing a low temperature heat source.
請參照第1圖所示，揭示一種習知致熱系統9，係由一壓縮機91、一冷凝器92、一膨脹閥93及一蒸發器94利用管路互相連接，且管路內充填有工作流體[working fluid]，以構成一封閉迴路之循環系統。其中，該蒸發器94係可令工作流體吸收一第一熱儲95[相對低溫之外界或大氣]之熱量[qL ]，而該冷凝器92則可將工作流體之熱量[qH ]排放至一第二熱儲96[相對高溫之空間或物體]。藉此，使該第二熱儲96可維持在理想之溫度，以達到致熱之目的。Referring to FIG. 1, a conventional heat generating system 9 is disclosed. The compressor 91, a condenser 92, an expansion valve 93, and an evaporator 94 are connected to each other by a pipeline, and the pipeline is filled with Working fluid to form a closed loop circulatory system. Wherein the evaporator system 94 may make a first working fluid absorbs the heat storage 95 [ambient or atmospheric air of a relatively low temperature] The heat [q L], and the condenser 92 may heat the working fluid [q H] Emissions To a second heat reservoir 96 [relatively high temperature space or object]. Thereby, the second heat reservoir 96 can be maintained at a desired temperature for the purpose of heating.
然而，以該習知致熱系統9之設計而言，除了必須利用該第一熱儲95排放熱量[qL ]至該蒸發器94，方可使該冷凝器92傳送熱量[qH ]至該第二熱儲96之外，更必須額外對該壓縮機91輸入電功[Win ]，方可順利壓縮工作流體。整體而言，該習知致熱系統9必須耗費大量之能源，方可維持該第二熱儲96之溫度，因此相當不經濟實惠。基於上述原因，該習知致熱系統9仍有進一步加以改良之必要。However, with the design of the conventional heating system 9, in addition to having to use the first heat reservoir 95 to discharge heat [q L ] to the evaporator 94, the condenser 92 can transfer heat [q H ] to In addition to the second heat reservoir 96, it is necessary to additionally input electrical work [W in ] to the compressor 91 in order to smoothly compress the working fluid. Overall, the conventional heat system 9 must consume a significant amount of energy to maintain the temperature of the second heat reservoir 96 and is therefore relatively uneconomical. For the above reasons, the conventional heating system 9 still has the need for further improvement.
本發明目的乃解決習知技術之缺點，以提供一種低溫熱源利用之熱泵系統，藉以達到節省所需耗費之能源者。The object of the present invention is to solve the shortcomings of the prior art to provide a heat pump system utilizing a low temperature heat source, thereby achieving energy savings.
為達到前述發明目的，本發明所運用之技術內容包含有：一種低溫熱源利用之熱泵系統，係包含：一動力循環單元，係由一排熱器、一壓縮機、一加熱器及一渦輪機依序互相連接；及一熱泵單元，連接該動力循環單元之渦輪機，且該熱泵單元具有一熱交換器，該熱交換器係連接該動力循環單元之排熱器。In order to achieve the foregoing object, the technical content of the present invention includes: a heat pump system utilizing a low temperature heat source, comprising: a power cycle unit, which is composed of a heat exhaustor, a compressor, a heater and a turbine. And a heat pump unit connected to the turbine of the power cycle unit, and the heat pump unit has a heat exchanger connected to the heat exhaust unit of the power cycle unit.
本發明低溫熱源利用之熱泵系統，該熱泵單元可以由一壓縮器、一蒸發器、一膨脹閥及一冷凝器依序互相連接，且該熱交換器係連接該蒸發器。In the heat pump system utilized by the low temperature heat source of the present invention, the heat pump unit may be sequentially connected to each other by a compressor, an evaporator, an expansion valve and a condenser, and the heat exchanger is connected to the evaporator.
本發明低溫熱源利用之熱泵系統，該熱泵單元之壓縮器可以連接一輔助動力單元，該輔助動力單元係可用以驅動該壓縮器作動。In the heat pump system utilized by the low temperature heat source of the present invention, the compressor of the heat pump unit can be connected to an auxiliary power unit, and the auxiliary power unit can be used to drive the compressor to operate.
為讓本發明之上述及其他目的、特徵及優點能更明顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式，作詳細說明如下：請參照第2圖所示，本發明較佳實施例之低溫熱源利用之熱泵系統係包含一動力循環單元1及一熱泵單元2，該動力循環單元1係連接該熱泵單元2。The above and other objects, features and advantages of the present invention will become more <RTIgt; The heat pump system utilized by the low temperature heat source according to the preferred embodiment of the present invention comprises a power cycle unit 1 and a heat pump unit 2, and the power cycle unit 1 is connected to the heat pump unit 2.
本發明以下所述之「低溫熱源」，係指該動力循環單元1所排放之顯熱(sensible heat)，且該顯熱係低於攝氏100度C。The "low temperature heat source" as used hereinafter in the present invention means the sensible heat discharged from the power cycle unit 1, and the sensible heat system is lower than 100 degrees C.
該動力循環單元1係用以驅動該熱泵單元2作動，且該動力循環單元1係包含一排熱器11、一壓縮機12、一加熱器13及一渦輪機14，該排熱器11、壓縮機12、加熱器13及渦輪機14係依序藉由管路互相連接，且該管路內充填有如空氣之工作流體[以下稱第一流體]；換言之，該第一流體係流經該排熱器11，並依序通過該壓縮機12、加熱器13及渦輪機14後，再流回該排熱器11。其中，該排熱器11係用以將該動力循環單元1所產生相對低溫之顯熱[q]導入該熱泵單元2，以便將熱量回收使用，藉此即可無需對該熱泵單元2輸入額外的熱量；該壓縮機12亦可以為泵浦[Pump]，主要係用以壓縮該第一流體，使該第一流體升溫；該加熱器13係可利用鍋爐、太陽能或一般工業廢熱對壓縮後之第一流體進行等壓加熱，以利該第一流體於該渦輪機14膨脹作功。藉此，該渦輪機14即可輸出軸功以驅動該熱泵單元2作動，有助於節省驅動該熱泵單元2所需耗費之能源。The power cycle unit 1 is configured to drive the heat pump unit 2 to operate, and the power cycle unit 1 includes a heat exhaustor 11, a compressor 12, a heater 13, and a turbine 14, the heat exchanger 11, and the compression The machine 12, the heater 13 and the turbine 14 are sequentially connected to each other by a pipeline, and the pipeline is filled with a working fluid such as air (hereinafter referred to as a first fluid); in other words, the first flow system flows through the heat exchanger 11, and sequentially passes through the compressor 12, the heater 13, and the turbine 14, and then flows back to the heat exhaustor 11. The heat exhauster 11 is configured to introduce the relatively low temperature sensible heat [q] generated by the power cycle unit 1 into the heat pump unit 2 to recover heat, thereby eliminating the need to input additional heat pump unit 2 The compressor 12 can also be a pump, which is mainly used to compress the first fluid to heat the first fluid; the heater 13 can be compressed by using a boiler, solar energy or general industrial waste heat. The first fluid is isostatically heated to facilitate expansion of the first fluid in the turbine 14. Thereby, the turbine 14 can output shaft work to drive the heat pump unit 2 to operate, which helps to save the energy required to drive the heat pump unit 2.
該熱泵單元2係具有一熱交換器21，該熱交換器21連接該動力循環單元1之排熱器11，用以吸收該排熱器11所排放之顯熱[q]；藉此，該熱泵單元2係可排放熱量[Q]至一熱儲3[欲加熱之空間或物體]，且該熱量[Q]因為該熱泵單元2之作功而大於該相對低溫之顯熱[q]，藉以使該熱儲3可維持於較佳之溫度，有效達到致熱之效果；另一方面，該熱儲3亦可以為各種能夠儲存熱量之結構設計，以便作為將熱量再次利用之基礎，進而使得本發明可具有儲熱之功能。更詳言之，在本實施例中，該熱泵單元2另包含一壓縮器22、一蒸發器23、一膨脹閥24及一冷凝器25，該壓縮器22、蒸發器23、膨脹閥24及冷凝器25亦藉由管路互相連接，以構成一封閉循環系統，且管路內亦充填有工作流體[以下稱第二流體]。值得注意的是，該壓縮器22係連接該動力循環單元1之渦輪機14，用以接收該渦輪機14所輸出之軸功；而該蒸發器23則連接該熱交換器21，用以接收該熱交換器21所吸收之顯熱[q]。The heat pump unit 2 has a heat exchanger 21 connected to the heat exhauster 11 of the power circulation unit 1 for absorbing the sensible heat [q] discharged from the heat exhaustor 11; The heat pump unit 2 can discharge heat [Q] to a heat storage 3 [space or object to be heated], and the heat [Q] is greater than the relatively low temperature sensible heat [q] because of the work of the heat pump unit 2, Therefore, the heat storage 3 can be maintained at a preferred temperature to effectively achieve the effect of heating; on the other hand, the heat storage 3 can also be designed for various structures capable of storing heat, thereby serving as a basis for reusing heat, thereby The invention can have the function of storing heat. More specifically, in the present embodiment, the heat pump unit 2 further includes a compressor 22, an evaporator 23, an expansion valve 24, and a condenser 25, the compressor 22, the evaporator 23, the expansion valve 24, and The condensers 25 are also connected to each other by pipes to form a closed circulation system, and the pipes are also filled with a working fluid [hereinafter referred to as a second fluid]. It is noted that the compressor 22 is connected to the turbine 14 of the power cycle unit 1 for receiving the shaft power output by the turbine 14; and the evaporator 23 is connected to the heat exchanger 21 for receiving the heat. The sensible heat [q] absorbed by the exchanger 21.
其中，該熱泵單元2之工作原理大致可以為：該第二流體流經該壓縮器22壓縮升溫後，隨即流入該蒸發器23，以便吸收該動力循環單元1所排放之顯熱[q]；當該第二流體流經該膨脹閥24並進入該冷凝器25時，即可將熱量[Q]傳送至該熱儲3，而後再流回該壓縮器22，即完成一個循環[cycle]。The working principle of the heat pump unit 2 may be: after the second fluid flows through the compressor 22, the temperature is increased, and then flows into the evaporator 23 to absorb the sensible heat discharged by the power circulation unit 1 [q]; When the second fluid flows through the expansion valve 24 and enters the condenser 25, the heat [Q] is transferred to the heat reservoir 3 and then flows back to the compressor 22, completing a cycle [cycle].
此外，本發明低溫熱源利用之熱泵系統還可以包含一輔助動力單元4，該輔助動力單元4係連接該熱泵單元2，用以做為該熱泵單元2之另一動力來源。更詳言之，在本實施例中，該輔助動力單元4係連接該熱泵單元2之壓縮器22，用以輸出功至該壓縮器22。藉此，在該壓縮器22之壓縮比不足時可以輔助驅動該壓縮器22作動，以維持該熱泵單元2之運行。In addition, the heat pump system utilized by the low temperature heat source of the present invention may further include an auxiliary power unit 4 connected to the heat pump unit 2 as another power source of the heat pump unit 2. More specifically, in the present embodiment, the auxiliary power unit 4 is connected to the compressor 22 of the heat pump unit 2 for outputting work to the compressor 22. Thereby, when the compression ratio of the compressor 22 is insufficient, the compressor 22 can be driven to operate to maintain the operation of the heat pump unit 2.
請再參照第2圖所示，本發明低溫熱源利用之熱泵系統於使用時，係先以該動力循環單元1之作動情形進行說明。該第一流體係流經該排熱器11排放顯熱[q]至該熱泵單元2之熱交換器21，而後再流經該壓縮機12被等熵壓縮並升溫；藉此，被壓縮之第一流體係流至該加熱器13被加熱後，再流入該渦輪機14，令該渦輪機14輸出軸功至該熱泵單元2之壓縮器22，以驅動該熱泵單元2作動。Referring to Fig. 2 again, the heat pump system used in the low temperature heat source of the present invention will be described first with the operation of the power cycle unit 1. The first flow system flows through the heat exhaustor 11 to discharge sensible heat [q] to the heat exchanger 21 of the heat pump unit 2, and then flows through the compressor 12 to be isentropically compressed and warmed; thereby, the compressed The first-class system flows until the heater 13 is heated, and then flows into the turbine 14, causing the turbine 14 to output shaft work to the compressor 22 of the heat pump unit 2 to drive the heat pump unit 2 to operate.
接著，再以該熱泵單元2之作動情形進行說明。該第二流體係在該壓縮器22被壓縮後流入該蒸發器23，以便利用該熱交換器21所吸收之顯熱[q]來加熱該第二流體，藉此即可無需額外輸入熱量至該蒸發器23，有效達到節約能源之目的。最後，該第二流體係流經通過該膨脹閥24而到達該冷凝器25，令該冷凝器25傳送熱量[Q]至該熱儲3，使該熱儲3維持於理想之溫度，以達到致熱之目的。Next, the operation of the heat pump unit 2 will be described. The second flow system flows into the evaporator 23 after the compressor 22 is compressed, so as to heat the second fluid by the sensible heat [q] absorbed by the heat exchanger 21, thereby eliminating the need for additional heat input. The evaporator 23 effectively achieves the purpose of saving energy. Finally, the second flow system flows through the expansion valve 24 to the condenser 25, and the condenser 25 transmits heat [Q] to the heat storage 3 to maintain the heat storage 3 at a desired temperature. The purpose of heating.
本發明低溫熱源利用之熱泵系統的主要技術特徵在於：利用該動力循環單元1作動時必須排出若干顯熱之特性，搭配在該熱泵單元2設置該熱交換器21，藉此即可透過該熱交換器21將該動力循環單元1所排放相對低溫之顯熱回收加以使用，且本發明同時藉由將該動力循環單元1所輸出之軸功轉而驅動該熱泵單元2作動。如此一來，不僅無需再額外輸入熱量至該熱泵單元2，即可有效將該第二流體加熱，同時亦大幅降低額外輸入功至該熱泵單元2，亦可有效驅動該壓縮器22壓縮該第二流體。藉此，該熱泵單元2係可傳送預定之熱量[Q]至該熱儲3，令該熱儲3維持於理想之溫度，在有效達到致熱目的之同時，本發明可有效達到節省所需耗費之能源的功效。The main technical feature of the heat pump system utilized by the low-temperature heat source of the present invention is that a certain sensible heat characteristic must be discharged when the power circulation unit 1 is actuated, and the heat exchanger 21 is disposed in the heat pump unit 2, thereby transmitting the heat. The exchanger 21 uses the sensible heat recovery of the relatively low temperature discharged from the power cycle unit 1, and the present invention simultaneously drives the heat pump unit 2 to operate by rotating the shaft power output from the power cycle unit 1. In this way, not only the additional heat input to the heat pump unit 2 is required, but the second fluid can be effectively heated, and the additional input work is also greatly reduced to the heat pump unit 2, and the compressor 22 can be effectively driven to compress the second unit. fluid. Thereby, the heat pump unit 2 can transmit a predetermined amount of heat [Q] to the heat storage 3, so that the heat storage 3 is maintained at a desired temperature, and the present invention can effectively achieve the saving while effectively achieving the purpose of heating. The energy efficiency of the energy.
雖然本發明已利用上述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者在不脫離本發明之精神和範圍之內，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.
1．．．動力循環單元1. . . Power cycle unit
11．．．排熱器11. . . Heat exchanger
12．．．壓縮機12. . . compressor
13．．．加熱器13. . . Heater
14．．．渦輪機14. . . Turbine
2．．．熱泵單元2. . . Heat pump unit
21．．．熱交換器twenty one. . . Heat exchanger
22．．．壓縮器twenty two. . . compressor
23．．．蒸發器twenty three. . . Evaporator
24．．．膨脹閥twenty four. . . Expansion valve
25．．．冷凝器25. . . Condenser
3．．．熱儲3. . . Heat storage
4．．．輔助動力單元4. . . Auxiliary power unit
Q．．．熱量Q. . . Heat
q．．．顯熱q. . . Sensible heat
9．．．習知致熱系統9. . . Conventional heating system
91．．．壓縮機91. . . compressor
92．．．冷凝器92. . . Condenser
93．．．膨脹閥93. . . Expansion valve
94．．．蒸發器94. . . Evaporator
95．．．第一熱儲95. . . First heat store
96．．．第二熱儲96. . . Second heat store
第1圖：習知致熱系統之架構圖。Figure 1: Schematic diagram of the conventional heating system.
第2圖：本發明較佳實施例之低溫熱源利用之熱泵系統的架構圖。Figure 2 is a block diagram of a heat pump system utilizing a low temperature heat source in accordance with a preferred embodiment of the present invention.
1．．．動力循環單元1. . . Power cycle unit
11．．．排熱器11. . . Heat exchanger
12．．．壓縮機12. . . compressor
13．．．加熱器13. . . Heater
14．．．渦輪機14. . . Turbine
2．．．熱泵單元2. . . Heat pump unit
21．．．熱交換器twenty one. . . Heat exchanger
22．．．壓縮器twenty two. . . compressor
23．．．蒸發器twenty three. . . Evaporator
24．．．膨脹閥twenty four. . . Expansion valve
25．．．冷凝器25. . . Condenser
3．．．熱儲3. . . Heat storage
4．．．輔助動力單元4. . . Auxiliary power unit
Q．．．熱量Q. . . Heat
q．．．顯熱q. . . Sensible heat
Claims (4)
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| TW100122045A TWI427253B (en) | 2011-06-23 | 2011-06-23 | Heating system for low temperature heat source |
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| TW100122045A TWI427253B (en) | 2011-06-23 | 2011-06-23 | Heating system for low temperature heat source |
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| TWI427253B true TWI427253B (en) | 2014-02-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128842A (en) * | 1994-09-20 | 1996-08-14 | 佐贺大学 | Energy conversion mechanism |
| CN101033707A (en) * | 2006-02-24 | 2007-09-12 | 株式会社电装 | Waste heat utilization device and control method thereof |
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|---|---|---|---|---|
| CN1128842A (en) * | 1994-09-20 | 1996-08-14 | 佐贺大学 | Energy conversion mechanism |
| CN101033707A (en) * | 2006-02-24 | 2007-09-12 | 株式会社电装 | Waste heat utilization device and control method thereof |
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