CN1405516A - Cascade superhigh temperature water source heat pump apparatus - Google Patents
Cascade superhigh temperature water source heat pump apparatus Download PDFInfo
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- CN1405516A CN1405516A CN 02133042 CN02133042A CN1405516A CN 1405516 A CN1405516 A CN 1405516A CN 02133042 CN02133042 CN 02133042 CN 02133042 A CN02133042 A CN 02133042A CN 1405516 A CN1405516 A CN 1405516A
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- temperature
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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
- 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
Abstract
Overlap super high temperature water source thermal pump comprises a low, high temperature compressor in a cabinet in which the medium outlet of evaporizer is connected with the medium inlet of the high temperature gas/liquid heat exchanger by a connecting pipe while its outlet is connected with the medium inlet of a high temperature compressor, the outlet of which is connected with the medium inlet of a condenser and the outlet of which is connected with the inlet of a high temperature electromagnetic valve, which outlet is connected with the inlet of a high temperature gas/liquid heat exchanger, the outlet of which is connected with the inlet of the high temperature expansion valve and its outlet is connected with the evaporizer, with the supplied water temperature by 70-90 deg.C..
Description
(1) technical field
The present invention relates to a kind of heating plant, especially relate to a kind of cascade superhigh temperature water source heat pump apparatus of the high-grade heat energy that utilizes the underground water low grade heat energy to be transformed into directly to utilize.
(2) technical background
At present in China; the heating of building; except that a part is steam power plant's central heating; almost complete fuel boiler room heat supply for disperseing; these heating plants obtain heat by direct buring solid fuel coal or oil, not only efficient low, cause energy waste, and carbon dioxide and flue dust that burning produces have caused serious pollution to environment; along with the continuous enhancing of global energy crisis and people's energy-conserving and environment-protective consciousness, explore energy saving and environment friendly heating plant and become the task of top priority.
And the generation of water resource heat pump and development are exactly the product that heating installation is changed.Water resource heat pump is by consuming a small amount of (25-30%) high-grade electric energy.A large amount of low grade heat energy that not directly utilizes in the soil, in the underground water is transformed into the device of the high-grade heat energy that can directly utilize.
Yet present water resource heat pump heat supply does not also reach standard heating supply water temperature, and its highest supply water temperature is 60 ℃, 90 ℃ away from heating water minimum standard temperature differs far away be.And Energy Efficiency Ratio is lower at this moment, normally supplies the backwater operating mode about 50/40 ℃, can use reluctantly if be used in air-conditioning draught fan coil pipe cooling system, but be used for heating system, then water temperature is on the low side, and particularly legacy system transformation is because former radiator is by 70-90 ℃ of configuration of standard water temperature.Therefore 50 ℃ of left and right sides water temperatures are difficult to meet the demands usually.
Because warm cold-producing medium was (as R during headwaters heat pump all adopted at present
22) carry out unit circulation, this device compression ratio is big, condensing pressure is higher, therefore can not form higher supply water temperature, and use high temperature refrigerant to carry out unit operation simply, can only from the thermal source more than 40 ℃, extract heat, otherwise Energy Efficiency Ratio has only about 1.5, so can not achieve the goal equally.
(3) summary of the invention
Technical problem to be solved by this invention is to adopt two kinds of different operating media of high low temperature, heat pump circulating device is divided into two sections of high and low temperatures carries out the superposition type circulation, and two kinds of working medias of high and low temperature are moved under optimum Working, increased the Energy Efficiency Ratio of big temperature difference heat pump cycle, when making normal operation, supply water temperature is more than 70 ℃, and Energy Efficiency Ratio is up to more than 3.78.
The present invention realizes with following technical measures:
Cascade superhigh temperature water source heat pump apparatus is to be become with the cascade superhigh temperature water source heat pump apparatus group by switch board.
Switch board is the outsourcing existing product, comprises Fig. 2, Fig. 3, control circuit shown in Figure 4 in the switch board, realizes controls such as the operation automation control of cascade superhigh temperature water source heat pump and every protections.Control circuit comprises programmable controller P
1, analog quantity input module P
2, operation display P
3And the circuit of peripheral electric elements composition, M among Fig. 2
1, M
2Be respectively the motor of high and low temperature compressor.Because switch board is commercially available known product, carefully do not state in this event.In the device cabinet, cryogenic compressor, evaporimeter, low temperature vapour-liquid heat exchanger mainly are housed, liquid reservoir, evaporative condenser, low-temperature solenoid valve, low-temperature expansion valve, temperature switch, low tension switch, high temperature vapour-liquid heat exchanger, high temperature compressed machine, condenser, high-temperature solenoid valve, high temperature expansion valve.The medium delivery outlet of evaporative condenser is connected by the medium input port of tube connector with high temperature vapour-liquid heat exchanger, and the medium delivery outlet of high temperature vapour-liquid heat exchanger is connected with the medium input port of high temperature compressed machine by tube connector.The medium delivery outlet of high temperature compressed machine is connected with condenser medium input port by tube connector.Low tension switch is contained between high temperature vapour-liquid heat exchanger and the high temperature compressed machine on the tube connector.High temperature high-low pressure force controller one terminates on the tube connector between high temperature vapour-liquid heat exchanger and the high temperature compressed machine, and the other end is connected on the tube connector between high temperature compressed machine and the condenser.Condenser medium delivery outlet is connected with the high-temperature solenoid valve inlet by tube connector, and the outlet of high-temperature solenoid valve is connected by the high-temperature medium input port of tube connector with high temperature vapour-liquid heat exchanger.The high-temperature medium delivery outlet of high temperature vapour-liquid heat exchanger is connected with the high temperature expansion valve import by tube connector.The high temperature expansion valve outlet is connected with the high-temperature medium input port of evaporative condenser by tube connector.
The present invention compared with prior art has following remarkable advantage and good effect:
1, supply water temperature height, can make the heat pump supply water temperature from originally the highest 60 ℃ bring up to 90 ℃.The standard that first the heat pump supply water temperature is raised to supplies water warm 70-90 ℃.The temperature difference supplies water and reduces water supply flow so greatly, reduces pipeline specification and water pump and transports energy, improves the heating that water temperature not only can satisfy civil buildings simultaneously, also can satisfy the heating requirement of other building.
2, Energy Efficiency Ratio height: the Energy Efficiency Ratio the when Energy Efficiency Ratio when this device provides 75 ℃ of water provides 50 ℃ of water with original device is identical.
3, applied widely: this device can not only satisfy air-conditioning heating, also is applicable to the old heating system of common heating system and reconstruction.Simultaneously also can be used for the system that other provides high-temperature-hot-water, heat up water as bathing pool etc.
4, market prospects are good: because this device supply water temperature is good, and applied range, the Energy Efficiency Ratio height, operating cost is low, and is pollution-free.The first investment of whole device is not higher than the original system investment, and therefore better market application is arranged.
5, can be used for air conditioner refrigerating summer, and higher Energy Efficiency Ratio is arranged.
(4) description of drawings
Fig. 1 is master's TV structure schematic diagram of the present invention.Fig. 2, Fig. 3, Fig. 4 are combined type superhigh temperature water source heat pump control circuit schematic diagrams.
(5) specific embodiment
Now in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 is the specific embodiment of the invention: in the device cabinet 18 evaporimeter 5 is housed, evaporimeter 5 medium delivery outlets are connected with low temperature vapour-liquid heat exchanger 14 medium inlets by copper pipe.The media outlet of low temperature vapour-liquid heat exchanger 14 is connected with cryogenic compressor 1 medium inlet by copper pipe.Being connected between vapour-liquid heat exchanger 14 and cryogenic compressor 1 is equipped with temperature switch 11 on the copper pipe road, low temperature high-low pressure force controller 10 1 ends also are contained on this pipeline simultaneously.The medium delivery outlet of cryogenic compressor 1 is connected with the cryogenic media input port of evaporative condenser 3 by copper pipe.The cryogenic media delivery outlet of evaporative condenser 3 is connected with the medium input port of liquid reservoir 9 by copper pipe.The medium delivery outlet of liquid reservoir 9 is connected by the inlet of copper pipe with low-temperature solenoid valve 6, and the outlet of low-temperature solenoid valve 6 is connected by the medium input port of copper pipe with low temperature vapour-liquid heat exchanger 14.The medium delivery outlet of low temperature vapour-liquid heat exchanger 14 is connected by the arrival end of copper pipe with low-temperature expansion valve 7.The port of export of low-temperature expansion valve 7 is connected with the medium input port of evaporimeter 5 by copper pipe.The cold water of evaporimeter 5 or source water inlet is connected by the steel pipe control valve 25 external with installing cabinet 18, control valve 25 outlets are connected with steel pipe, steel pipe is connected with threeway, threeway one end is connected with control valve 23 arrival ends by steel pipe, control valve 23 outlet termination steel pipes, the cold water inlet of the evaporative condenser 3 in steel pipe and the device cabinet 18 is connected, and the threeway other end is communicated with the place, water source by steel pipe, and evaporimeter 5 cold water or source water export and be connected with control valve 26 arrival ends by steel pipe.Control valve 26 ports of export are connected with steel pipe, and steel pipe connects threeway, and threeway one end is connected with control valve 24 arrival ends by steel pipe, and control valve 24 ports of export are connected with evaporative condenser 3 cooling water outlets by steel pipe.Another termination steel pipe of threeway, the steel pipe other end communicates with the place, water source.The high-temperature medium delivery outlet of evaporative condenser 3 is connected by the medium input port of copper pipe with high temperature vapour-liquid heat exchanger 8.The medium delivery outlet of high temperature vapour-liquid heat exchanger 8 is connected with the medium input port of high temperature compressed machine 2 by copper pipe.On the pipeline between high temperature vapour-liquid heat exchanger 8 and the high temperature compressed machine 2, low tension switch 12 is housed.One end of high temperature high-low pressure force controller 15 also is installed on this pipeline.The medium delivery outlet of high temperature compressed machine 2 is connected with the medium input port of condenser 4 by copper pipe.The medium delivery outlet of condenser 4 is connected with high-temperature solenoid valve 17 arrival ends by copper pipe, and the port of export of high-temperature solenoid valve 17 is connected by the high-temperature medium input port of copper pipe with high temperature vapour-liquid heat exchanger 8.The high-temperature medium delivery outlet of high temperature vapour-liquid heat exchanger 8 is connected by the arrival end of copper pipe with high temperature expansion valve 16.High temperature expansion valve 16 ports of export are connected with the high-temperature medium input port of evaporative condenser 3 by copper pipe.The hot water output port of condenser 4 is connected by the external control valve 20 of steel pipe and device cabinet 18, and the hot water input port of condenser 4 is connected by the steel pipe control valve 21 external with installing cabinet 18.Temperature control protection temperature-sensing element 13 is being housed between condenser 4 and the control valve 20 and on the pipeline between condenser 4 and the control valve 21.Steel pipe at device cabinet 18 external connection control valve 20 ports of export is connected to threeway, the threeway other end is connected with control valve 19 arrival ends by steel pipe, control valve 19 ports of export are connected with the cold water delivery outlet of evaporimeter 5 by steel pipe, and the threeway other end connects iron pipe and communicates with the user heating system.The continuous steel pipe of the port of export at device cabinet 18 external connection control valves 21 connects threeway, and the threeway other end is connected by the arrival end of steel pipe with control valve 22, and the port of export of control valve 22 is connected with the cold water input port of evaporimeter 5 by steel pipe.The threeway other end connects steel pipe and is connected with the user heating system.
Heat the course of work
When device energising operation, in low-temperature zone dry evaporator 5, the evaporation of low-temperature working medium absorbs latent heat, become cryogenic gas by cryogenic liquid, the transfer of heat that will come from underground water or other low-temperature heat source is in working media, this moment, the evaporating temperature of low-temperature working medium was about 2 ℃, ground water temperature is cooled to 7 ℃-9 ℃ by 12 ℃-15 ℃, and send back to underground, after 14 intensifications of low-temperature working dielectric gas process vapour-liquid heat exchanger are overheated, sucked by cryogenic compressor 1, by the gas after the compressor suction, be compressed into high temperature and high pressure gas, enter evaporative condenser 3 then, emit latent heat to the hot operation medium, the low-temperature working medium is cooled into high temperature high pressure liquid simultaneously, after the low-temperature working medium is cooled into liquid, be stored in the liquid reservoir 9, to adapt to the variation of working media internal circulating load, the liquid of being confessed by liquid reservoir is cooled into subcooled liquid during through vapour-liquid interchanger 14, and subcooled liquid is become low-temp low-pressure liquid by low-temperature expansion valve 7 by throttling liquid, and evaporation heat absorption in evaporimeter 5, move in circles like this, form the low-temperature zone circulation.
When the low-temperature working medium is condensed in evaporative condenser 3, be in high-temperature medium evaporation absorption low-temperature zone heat release than the liquid condition of low 5 ℃ of cryogenic media, become gaseous state, behind vapour-liquid heat exchanger 8 heat absorption formation superheated steams, sucked by high temperature compressed machine 2, and be compressed into the higher high temperature and high pressure gas of temperature, emit latent heat by condenser 4 to user's recirculated water, because the hot operation medium is under the common high pressure that compressor requires, has higher condensation temperature, its condensation temperature reaches as high as more than 90 ℃, therefore can be for 70 ℃-90 ℃ hot water, the condensation load that the heat of this moment equals low-temperature zone adds high temperature machine institute work, after the high-temperature medium heat release, be condensed into high temperature high pressure liquid, become subcooled liquid by high temperature vapour-liquid heat exchanger 8 then, throttling becomes low-temp low-pressure liquid through heating power expansion valve again, enters evaporation heat absorption in the evaporative condenser, move in circles, form the high temperature section circulation.
Claims (2)
1, cascade superhigh temperature water source heat pump apparatus, mainly include device cabinet (18), evaporimeter (5), low temperature vapour-liquid heat exchanger (14), temperature switch (11), low temperature high-low pressure force controller (10), cryogenic compressor (1), low-temperature solenoid valve (6), low-temperature expansion valve (7), liquid reservoir (9), evaporative condenser (3), the medium delivery outlet that it is characterized in that evaporative condenser (3) is connected by the medium input port of tube connector with high temperature vapour-liquid heat exchanger (8), the medium delivery outlet of high temperature vapour-liquid heat exchanger (8) is connected by the medium input port of tube connector with high temperature compressed machine (2), the medium delivery outlet of high temperature compressed machine (2) is connected with condenser (4) medium input port by tube connector, condenser medium delivery outlet is connected with high-temperature solenoid valve (17) inlet by tube connector, the outlet of high-temperature solenoid valve (17) is connected by the high-temperature medium input port of tube connector with high temperature vapour-liquid heat exchanger (8), the high-temperature medium delivery outlet of high temperature vapour-liquid heat exchanger is connected with high temperature expansion valve (16) import by tube connector, and high temperature expansion valve (16) outlet is connected by the high-temperature medium input port of tube connector with evaporative condenser (3).
2, cascade superhigh temperature water source heat pump apparatus according to claim 1, it is characterized in that low tension switch (12) is contained between high temperature vapour-liquid heat exchanger (8) and the high temperature compressed machine (2) on the tube connector, high temperature high-low pressure force controller (15) one terminates on the tube connector between high temperature vapour-liquid heat exchanger (8) and the high temperature compressed machine (2), and the other end is connected on the tube connector between high temperature compressed machine (2) and the condenser (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133042 CN1405516A (en) | 2002-09-26 | 2002-09-26 | Cascade superhigh temperature water source heat pump apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133042 CN1405516A (en) | 2002-09-26 | 2002-09-26 | Cascade superhigh temperature water source heat pump apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN1405516A true CN1405516A (en) | 2003-03-26 |
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|---|---|---|---|
| CN 02133042 Pending CN1405516A (en) | 2002-09-26 | 2002-09-26 | Cascade superhigh temperature water source heat pump apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226596A (en) * | 2011-05-03 | 2011-10-26 | 烟台大学 | Engine-driven cascade heat pump device |
| CN102506502A (en) * | 2011-10-19 | 2012-06-20 | 广东美的暖通设备限公司 | Heat-accumulation-type cascade-cycle water heating machine and control method thereof |
| CN102654330A (en) * | 2012-06-06 | 2012-09-05 | 顺德职业技术学院 | Coupled evaporative condenser used for cascade heat pump hot water machine |
-
2002
- 2002-09-26 CN CN 02133042 patent/CN1405516A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226596A (en) * | 2011-05-03 | 2011-10-26 | 烟台大学 | Engine-driven cascade heat pump device |
| CN102226596B (en) * | 2011-05-03 | 2013-07-17 | 烟台大学 | Engine-driven cascade heat pump device |
| CN102506502A (en) * | 2011-10-19 | 2012-06-20 | 广东美的暖通设备限公司 | Heat-accumulation-type cascade-cycle water heating machine and control method thereof |
| CN102654330A (en) * | 2012-06-06 | 2012-09-05 | 顺德职业技术学院 | Coupled evaporative condenser used for cascade heat pump hot water machine |
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