CN204786687U - Heating system - Google Patents
Heating system Download PDFInfo
- Publication number
- CN204786687U CN204786687U CN201520256781.0U CN201520256781U CN204786687U CN 204786687 U CN204786687 U CN 204786687U CN 201520256781 U CN201520256781 U CN 201520256781U CN 204786687 U CN204786687 U CN 204786687U
- Authority
- CN
- China
- Prior art keywords
- heat
- heat exchanger
- side water
- water route
- heating system
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 239000006096 absorbing agent Substances 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model provides a heating system, which comprises an absorption heat pump and a waterway system, wherein the absorption heat pump comprises a generator, a condenser, an absorber and an evaporator, and the waterway system comprises a primary side waterway and a secondary side waterway; the secondary side water path comprises a first branch and a second branch which are connected in parallel, wherein the absorber and the condenser are connected in series on the first branch; the primary side water channel exchanges heat with the generator, a second branch of the secondary side water channel and the evaporator. According to the utility model discloses a heating system, owing to once the side water route only with second branch road and the evaporimeter heat transfer in generator, secondary side water route, compare prior art, reduce electric heat pump evaporimeter heat transfer, can reduce once hot water resistance effectively, no longer need set up once the side water pump for the system is simpler. In addition, the resistance is reduced, the flow speed in the evaporator is increased, so that the evaporator can be designed with more flow paths, and the heat exchange efficiency of the evaporator is improved.
Description
Technical field
The utility model relates to heat supply process field, in particular to a kind of heating system.
Background technology
In prior art, the application of thermal power cogeneration central heating system in northern China urban heating is very general.In thermal power cogeneration central heating system, reduce a secondary net return water temperature of central heating system, the condensation heat being conducive to recovery cogeneration of heat and power thermal source place, for heat supply, significantly can promote the efficiency of co-generation unit.In prior art, Chinese patent ZL2008101010645 proposes a kind of heat-exchange unit of absorption heat pump, can reduce a secondary net return water temperature at each thermal substation of heat supply network.ZL2011102465935 proposes another combined type heat-exchange unit, and the basis of ZL2008101010645 adds the compression type heat pump assembly of external series, can reduce a secondary net return water temperature further.
But the simple Absorption heat-transformer that ZL2008101010645 proposes, the heat pump type heat exchanging unit of single-stage, when a secondary net supply water temperature lower (as 100 ~ 110 DEG C), only can be down to more than 30 DEG C by a secondary net return water temperature.Due to not enough to the cooling capacity of a secondary net backwater, the condenser thermal Finite reclaimed at thermal source place.The combined type heat-exchange unit that ZL2013106819695 proposes, although can reduce a secondary net return water temperature further, needs an absorption heat pump and a compression type heat series connection of pumps, causes unit volume increase, cost increase, a secondary net resistance to increase.
Utility model content
The utility model aims to provide a kind of heating system reducing primary side hot water resistance.
The utility model provides a kind of heating system, comprises absorption heat pump and water circuit system, and absorption heat pump comprises generator, condenser, absorber and evaporimeter, and water circuit system comprises primary side water route and secondary side water route; Secondary side water route comprises the first branch road parallel with one another and the second branch road, and wherein, absorber and condenser series connection are on the first leg; Second branch road in primary side water route and generator, secondary side water route and evaporator heat exchange.
Further, generator is connected on primary side water route.
Further, heating system also comprises first circulatory system, and primary side water route and generator are by the first circulatory system heat exchange; Wherein, first circulatory system comprises First Heat Exchanger and the first closed circuit, and the heat tunnel of First Heat Exchanger is connected on primary side water route, being connected on the first closed circuit by heat tunnel of generator and First Heat Exchanger.
Further, heating system also comprises second circulatory system, and primary side water route is by second circulatory system and generator and the equal heat exchange of the second branch road; Wherein, second circulatory system comprises the second heat exchanger and the second closed circuit, second heat exchanger comprises a heat tunnel and two by heat tunnel, the heat tunnel of the second heat exchanger is connected on primary side water route, one of second heat exchanger is connected on the second branch road by heat tunnel, and another of generator and the second heat exchanger is connected on the second closed circuit by heat tunnel.
Further, evaporator series is on primary side water route.
Further, heating system also comprises third circulation system, and primary side water route and evaporimeter are by third circulation system heat exchange; Wherein, third circulation system comprises the 3rd heat exchanger and the 3rd closed circuit, and the heat tunnel of the 3rd heat exchanger is connected on primary side water route, being connected on by heat tunnel on the 3rd closed circuit of evaporimeter and the 3rd heat exchanger.
Further, heating system also comprises the 4th circulatory system, and primary side water route is by the 4th circulatory system and evaporimeter and the equal heat exchange of the second branch road; Wherein, 4th circulatory system comprises the 4th heat exchanger and the 4th closed circuit, 4th heat exchanger comprises a heat tunnel and two by heat tunnel, the heat tunnel of the 4th heat exchanger is connected on primary side water route, one of 4th heat exchanger is connected on the second branch road by heat tunnel, and another of evaporimeter and the 4th heat exchanger is connected on the 4th closed circuit by heat tunnel.
Further, heating system also comprises the 5th heat exchanger; The heat tunnel of the 5th heat exchanger is connected on primary side water route, being connected on second branch road in secondary side water route by heat tunnel of the 5th heat exchanger.
Further, absorber is the multistage absorption device of series connection mutually; Evaporimeter is the multi-stage evaporator of series connection mutually.
Further, heating system also comprises steam compressor.
According to heating system of the present utility model, due to primary side water route only with the second branch road and the evaporator heat exchange in generator, secondary side water route, compared to existing technology, reduce electric heating pump evaporator heat exchange, effectively can reduce primary side hot water resistance, no longer need to arrange primary side water pump, make system simpler.In addition, because resistance reduces, in evaporimeter, flow velocity increases, and makes evaporimeter can design more flow process number, thus improves evaporator heat exchange efficiency.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the principle schematic of the first embodiment according to heating system of the present utility model;
Fig. 2 is the principle schematic of the second embodiment according to heating system of the present utility model;
Fig. 3 is the principle schematic of the 3rd embodiment according to heating system of the present utility model;
Fig. 4 is the principle schematic of the 4th embodiment according to heating system of the present utility model;
Fig. 5 is the principle schematic of the 5th embodiment according to heating system of the present utility model;
Fig. 6 is the principle schematic of the 6th embodiment according to heating system of the present utility model;
Fig. 7 is the principle schematic of the 7th embodiment according to heating system of the present utility model;
Fig. 8 is the principle schematic of the 8th embodiment according to heating system of the present utility model.
Description of reference numerals:
1, generator; 2, condenser; 3a, first absorber; 3b, secondary absorber; 4a, one-level evaporimeter; 4b, secondary evaporimeter; 5, solution heat exchanger; 6, the 5th heat exchanger; 7, solution circulation pump; 8, water as refrigerant circulating pump, 9, first every pressure device; 10, second every pressure device; 11, the first circulating pump; 12, First Heat Exchanger; 13, the 3rd circulating pump; 14, the 3rd heat exchanger; 15, the second circulating pump; 16, the second heat exchanger; 17, the 4th circulating pump; 18, the 4th heat exchanger; 19, steam compressor.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Fig. 1 to 8, according to the utility model heating system, comprise absorption heat pump and water circuit system, absorption heat pump comprises generator 1, condenser 2, absorber and evaporimeter, and water circuit system comprises primary side water route and secondary side water route; Secondary side water route comprises the first branch road parallel with one another and the second branch road, and wherein, absorber and condenser 2 are connected on the first leg; Second branch road in primary side water route and generator 1, secondary side water route and evaporator heat exchange.Due to primary side water route only with the second branch road and the evaporator heat exchange in generator, secondary side water route, compared to existing technology, reduce electric heating pump evaporator heat exchange, effectively can reduce primary side hot water resistance, no longer need to arrange primary side water pump, make system simpler.In addition, because resistance reduces, in evaporimeter, flow velocity increases, and makes evaporimeter can design more flow process number, thus improves evaporator heat exchange efficiency.
Particularly, composition graphs 1 illustrates the first embodiment of the present utility model, and in a first embodiment, heating system also comprises first circulatory system, and primary side water route and generator 1 are by the first circulatory system heat exchange; Wherein, first circulatory system comprises First Heat Exchanger 12 and the first closed circuit, and the heat tunnel of First Heat Exchanger 12 is connected on primary side water route, being connected on the first closed circuit by heat tunnel of generator 1 and First Heat Exchanger 12.First circulatory system is set, the recirculated water in the first closed circuit is utilized indirectly to realize primary side water route and generator heat exchange, thus the generator of absorption heat pump and primary side water route are isolated, when preventing that in primary side water route, water quality is poor, cause the problem of generator fouling and clogging, reduce maintenance cost, reduce use cost.
More specifically, the heating system of the first embodiment mainly comprises generator 1, condenser 2, absorber is multistage absorption device, namely comprises first absorber 3a, secondary absorber 3b, similarly, evaporimeter is also multistage absorption device, comprises one-level evaporimeter 4a, secondary evaporimeter 4b, solution heat exchanger 5, the 5th heat exchanger 6, First Heat Exchanger 12, solution circulation pump 7, water as refrigerant circulating pump 8, first is every pressure device 9, and second every pressure device 10, can go here and there in first closed circuit and establish the first circulating pump 11, thus circulation power is provided.
In FIG, primary side water route (A1-A2) connects the heat tunnel of First Heat Exchanger 12 successively, the heat tunnel of the 5th heat exchanger 6, secondary evaporimeter 4b, and one-level evaporimeter 4a gets back to thermal source.Secondary side water route (B1-B2) is divided into two branch roads in parallel, and one of them branch road successively flows through secondary absorber 3b, first absorber 3a, condenser 2 being heated in the mode of series connection.Another branch road enters being heated by heat tunnel of the 5th heat exchanger 6.Two branch roads finally mix and as secondary water outlet to user's heat supply.The second way of realization as shown in Figure 2, by generator 1, condenser 2, first absorber 3a,
Composition graphs 2 illustrates the second embodiment of heating system of the present utility model, and in a second embodiment, heating system comprises third circulation system, and primary side water route and evaporimeter are by third circulation system heat exchange; Wherein, third circulation system comprises the 3rd heat exchanger 14 and the 3rd closed circuit, and the heat tunnel of the 3rd heat exchanger 14 is connected on primary side water route, being connected on by heat tunnel on the 3rd closed circuit of evaporimeter and the 3rd heat exchanger 14.Be similar to first circulatory system in the first embodiment, by arranging third circulation system, the recirculated water in the 3rd closed circuit is utilized indirectly to realize primary side water route and evaporator heat exchange, thus the evaporimeter of absorption heat pump and primary side water route are isolated, when preventing that in primary side water route, water quality is poor, cause the problem that fouling of evaporator blocks, reduce maintenance cost, reduce use cost.
Be similar to the first embodiment, absorber is multistage absorption device, namely comprises first absorber 3a, secondary absorber 3b, and evaporimeter is also multistage absorption device, comprises one-level evaporimeter 4a, secondary evaporimeter 4b.Primary side water route connects generator 1 successively, the heat tunnel of the 5th heat exchanger 6, and thermal source got back to by the 3rd heat exchanger 14.Secondary water inlet is divided into two branch roads in parallel, and one of them branch road successively flows through secondary absorber 3b, first absorber 3a, condenser 2 being heated in the mode of series connection.Another branch road enters being heated by heat tunnel of the 5th heat exchanger 6.Two intermediate water branch roads finally mix and as secondary water outlet to building heat supplying.3rd closed circuit being arranged in series the 3rd circulating pump the 13, three circulating pump 13 drives evaporimeter recirculated water to circulate between secondary evaporimeter 4b, one-level evaporimeter 4a and the 3rd heat exchanger 14.
Composition graphs 3 illustrates the 3rd embodiment of heating system of the present utility model, and in the third embodiment, heating system comprises second circulatory system, and primary side water route is by second circulatory system and generator 1 and the equal heat exchange of the first branch road; Wherein, second circulatory system comprises the second heat exchanger 16 and the second closed circuit, second heat exchanger 16 comprises a heat tunnel and two by heat tunnel, the heat tunnel of the second heat exchanger 16 is connected on primary side water route, connected on the first leg by heat tunnel for one of second heat exchanger 16, another of generator 1 and the second heat exchanger 16 is connected on the second closed circuit by heat tunnel.Namely second circulatory system is adopted first circulatory system and the 5th heat exchanger 6 to be integrated.Similarly, can go here and there in the second closed circuit and establish the second circulating pump 15, thus circulation power is provided.
Primary side water route connect successively the second heat exchanger 16 by heat tunnel, secondary evaporimeter 4b, one-level evaporimeter 4a gets back to thermal source.Secondary side water route is divided into two branch roads in parallel, and one of them branch road successively flows through secondary absorber 3b, first absorber 3a, condenser 2 being heated in the mode of series connection.Another branch road enters being heated by heat tunnel of second heat exchanger 16.Two intermediate water branch roads finally mix and as secondary water outlet to building heat supplying.
Composition graphs 4 illustrates the 4th embodiment of heating system of the present utility model, and in the fourth embodiment, heating system comprises the 4th circulatory system, and primary side water route is by the 4th circulatory system and evaporimeter and the equal heat exchange of the first branch road; Wherein, 4th circulatory system comprises the 4th heat exchanger 18 and the 4th closed circuit, 4th heat exchanger 18 comprises a heat tunnel and two by heat tunnel, the heat tunnel of the 4th heat exchanger 18 is connected on primary side water route, connected on the first leg by heat tunnel for one of 4th heat exchanger 18, another of evaporimeter and the 4th heat exchanger 18 is connected on the 4th closed circuit by heat tunnel.Be similar to second circulatory system in the second embodiment, adopt the 4th circulatory system, second circulatory system and the 5th heat exchanger 6 are integrated.
In the fourth embodiment, primary side water route connects generator 1 successively, and the heat tunnel of the 4th heat exchanger 18 gets back to thermal source.Secondary water inlet is divided into two branch roads in parallel, and one of them branch road successively flows through secondary absorber 3b, first absorber 3a, condenser 2 being heated in the mode of series connection.Another branch road enters being heated by heat tunnel of the 4th heat exchanger 18.Two intermediate water branch roads finally mix and as secondary water outlet to building heat supplying.4th circulating pump 17 drives evaporimeter recirculated water to circulate between secondary evaporimeter 4b, one-level evaporimeter 4a and the 4th heat exchanger 18.
The 5th embodiment as shown in Figure 5, on the basis of the first embodiment, adds steam compressor 19.
The 6th embodiment as shown in Figure 6, on the basis of the second embodiment, adds steam compressor 19.
The 7th embodiment as shown in Figure 7, on the basis of the 3rd embodiment, adds steam compressor 19.
The 8th embodiment as shown in Figure 8, on the basis of the 4th embodiment, adds steam compressor 19.
In the five to eight embodiment, after steam occurs out from generator 1, through liquid-blocking device and steam compressor 19 by adherence pressure, then be condensed into water to condenser 2.Be more prone to be condensed at condenser by the steam after compressor adherence pressure, thus the condensing pressure of condenser can be improved, increase condensation number.When one time water inlet temperature lower (as 100 ~ 110 DEG C), improve the condensing pressure of condenser, the effect increasing condensation number is more obvious, thus improve absorber import solution concentration, increase the uptake of absorber solution and the evaporation capacity of evaporimeter water as refrigerant, reduce primary water temperature.
Steam compressor 19 is added in the generation-condensation process of absorption heat pump, when one time water inlet temperature lower (as 100 ~ 110 DEG C), the condensing pressure of condenser can be improved, increase condensation number, improve absorber import solution concentration, increase the uptake of absorber solution and the evaporation capacity of evaporimeter water as refrigerant, thus reduce primary water temperature.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
1, steam compressor 19 is added in the generation-condensation process of source pump, when one time water inlet temperature lower (as 100 ~ 110 DEG C), the condensing pressure of condenser can be improved, increase condensation number, improve absorber import solution concentration, increase the uptake of absorber solution and the evaporation capacity of evaporimeter water as refrigerant, thus reduce primary water temperature.
2, adopt multistage absorption device and multi-stage evaporator, the evaporation-absorption process of source pump is divided into 2 ~ 3 grades, improves the thermodynamic perfect degree of source pump entirety, reduce primary water temperature.
3, primary side hot water releases heat in series through the generator of absorption heat pump, water-water heat exchanger, and secondary side hot water is heated by the absorber of absorption heat pump, the condenser of absorption heat pump, water-water heat exchanger.
4, primary side hot water releases heat in series through the evaporimeter of water-water heat exchanger, absorption heat pump, and secondary side hot water is heated by the absorber of absorption heat pump, the condenser of absorption heat pump, water-water heat exchanger.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a heating system, comprises absorption heat pump and water circuit system, and described absorption heat pump comprises generator (1), condenser (2), absorber and evaporimeter, and described water circuit system comprises primary side water route and secondary side water route; It is characterized in that,
Described secondary side water route comprises the first branch road parallel with one another and the second branch road, and wherein, described absorber and described condenser (2) are connected on described first branch road;
Described second branch road in described primary side water route and generator (1), described secondary side water route and described evaporator heat exchange.
2. heating system according to claim 1, is characterized in that,
Described generator (1) is connected on described primary side water route.
3. heating system according to claim 1, is characterized in that,
Described heating system also comprises first circulatory system, and described primary side water route and described generator (1) are by described first circulatory system heat exchange;
Wherein, described first circulatory system comprises First Heat Exchanger (12) and the first closed circuit, the heat tunnel of described First Heat Exchanger (12) is connected on described primary side water route, being connected on by heat tunnel on described first closed circuit of described generator (1) and described First Heat Exchanger (12).
4. heating system according to claim 1, is characterized in that,
Described heating system also comprises second circulatory system, and described primary side water route is by described second circulatory system and described generator (1) and the equal heat exchange of described second branch road;
Wherein, described second circulatory system comprises the second heat exchanger (16) and the second closed circuit, described second heat exchanger (16) comprises a heat tunnel and two by heat tunnel, the heat tunnel of described second heat exchanger (16) is connected on described primary side water route, one of described second heat exchanger (16) is connected on described second branch road by heat tunnel, and another of described generator (1) and described second heat exchanger (16) is connected on described second closed circuit by heat tunnel.
5. heating system according to claim 1, is characterized in that,
Described evaporator series is on described primary side water route.
6. heating system according to claim 1, is characterized in that,
Described heating system also comprises third circulation system, and described primary side water route and described evaporimeter are by described third circulation system heat exchange;
Wherein, described third circulation system comprises the 3rd heat exchanger (14) and the 3rd closed circuit, the heat tunnel of described 3rd heat exchanger (14) is connected on described primary side water route, being connected on by heat tunnel on described 3rd closed circuit of described evaporimeter and described 3rd heat exchanger (14).
7. heating system according to claim 1, is characterized in that,
Described heating system also comprises the 4th circulatory system, and described primary side water route is by described 4th circulatory system and described evaporimeter and the equal heat exchange of described second branch road;
Wherein, described 4th circulatory system comprises the 4th heat exchanger (18) and the 4th closed circuit, described 4th heat exchanger (18) comprises a heat tunnel and two by heat tunnel, the heat tunnel of described 4th heat exchanger (18) is connected on described primary side water route, one of described 4th heat exchanger (18) is connected on described second branch road by heat tunnel, and another of described evaporimeter and described 4th heat exchanger (18) is connected on described 4th closed circuit by heat tunnel.
8. heating system according to claim 1, is characterized in that,
Described heating system also comprises the 5th heat exchanger (6);
The heat tunnel of described 5th heat exchanger (6) is connected on described primary side water route, on second branch road being connected on described secondary side water route by heat tunnel of described 5th heat exchanger (6).
9. heating system according to any one of claim 1 to 8, is characterized in that,
Described absorber is the multistage absorption device of series connection mutually;
Described evaporimeter is the multi-stage evaporator of series connection mutually.
10. heating system according to any one of claim 1 to 8, is characterized in that,
Described heating system also comprises steam compressor (19), and in described generator (1), steam is by entering described condenser (2) after described steam compressor (19) compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256781.0U CN204786687U (en) | 2015-04-24 | 2015-04-24 | Heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256781.0U CN204786687U (en) | 2015-04-24 | 2015-04-24 | Heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204786687U true CN204786687U (en) | 2015-11-18 |
Family
ID=54526733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520256781.0U Active CN204786687U (en) | 2015-04-24 | 2015-04-24 | Heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204786687U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848329A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | heating system |
| CN109297076A (en) * | 2018-08-24 | 2019-02-01 | 赖中练 | Self-powered moves the big temperature difference heat-exchange unit of compression |
| CN111156737A (en) * | 2020-01-15 | 2020-05-15 | 东北电力大学 | Heating type absorption-compression coupling heat pump waste heat recovery system |
-
2015
- 2015-04-24 CN CN201520256781.0U patent/CN204786687U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848329A (en) * | 2015-04-24 | 2015-08-19 | 珠海格力电器股份有限公司 | heating system |
| CN104848329B (en) * | 2015-04-24 | 2018-04-13 | 珠海格力电器股份有限公司 | heating system |
| CN109297076A (en) * | 2018-08-24 | 2019-02-01 | 赖中练 | Self-powered moves the big temperature difference heat-exchange unit of compression |
| CN111156737A (en) * | 2020-01-15 | 2020-05-15 | 东北电力大学 | Heating type absorption-compression coupling heat pump waste heat recovery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101256042A (en) | Large temperature rise compression heat pump units | |
| CN104848328A (en) | Heat exchanger unit | |
| CN104764244A (en) | Absorption heat pump unit, heat exchanger unit and heating system | |
| CN102777961A (en) | Efficient heating system of direct air cooling machine set | |
| CN204786687U (en) | Heating system | |
| CN105258389A (en) | Compensation type dual-source heat pump cold and hot water unit | |
| CN103925729B (en) | Air conditioning system and central air conditioner comprising same | |
| CN103307805B (en) | Trigeneration heat pump system | |
| CN204757083U (en) | Heating system | |
| CN201917067U (en) | Double-condenser heat pump water heater | |
| CN102230690B (en) | Solar-powered heat pump unit capable of freely recovering excess heat | |
| CN202692214U (en) | Novel direct air-cooling unit high-efficiency heating system | |
| CN104848330A (en) | heating system | |
| CN104848329A (en) | heating system | |
| CN202868984U (en) | Multi-temperature zone carbon dioxide heat pump water heater | |
| CN102278785B (en) | Energy-saving combined heat and power type heat supply system | |
| CN213178513U (en) | Heat exchanger unit | |
| CN204593529U (en) | Heat exchanger unit | |
| CN203396151U (en) | Triple co-generation heat pump system | |
| CN203980403U (en) | heating system | |
| CN103836777B (en) | Mixing type ground source heat pump pipeline control structure | |
| CN204593936U (en) | Absorption heat pump unit, heat exchanger unit and heating system | |
| CN207132410U (en) | Air-cooled steam turbine comprehensive energy-saving system | |
| CN200996719Y (en) | Water heater of air-source hot-pump air conditioner | |
| CN203024479U (en) | Air conditioning system and central air conditioner comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |