CN1587864A - Semimultiplex type heat pump cold supply and heat supply method and air conditionging system - Google Patents
Semimultiplex type heat pump cold supply and heat supply method and air conditionging system Download PDFInfo
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- CN1587864A CN1587864A CN 200410054061 CN200410054061A CN1587864A CN 1587864 A CN1587864 A CN 1587864A CN 200410054061 CN200410054061 CN 200410054061 CN 200410054061 A CN200410054061 A CN 200410054061A CN 1587864 A CN1587864 A CN 1587864A
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Abstract
The invention discloses a half-covering heat pump refrigeration and heat supply method and its air conditioning system, comprising two-staged heat pump loop, the first stage to undertake sensible heat load and produces hot water with fairly low temperature or cold water with fairly high temperature for radiant heating and refrigeration or being used for surface convection recuperator. The second stage to undertake latent heat load and fresh air load, the two stages of heat pump are mainly covered by water loop which consists of radiation interchange surface or dry surface air heat exchanger, electric three way regulating valve and water pump, cold and hot water in air conditioning from first stage of heat pump heat exchanger flows into heat exchanger to exchange heat, being separated by three way regulating valve into two branch lines with one branch line joining with another one through heat exchanger of the second stage then back to heat exchanger through pump. The half-covering heat pump refrigeration and heat supply method has broken limitation of air source hot pump, extended the application area of air cooling heat pump, reduced energy cost, increasing air quality in room, totally speaking, it's a comfortable, energy saving air conditioning system.
Description
Technical field
The invention discloses a kind of air-conditioning system that is used to utilize the thermal power cold and heat supply, particularly a kind of half cascade type heat pump cold and heat supply method and air-conditioning system.
Background technology
Heat pump is a kind of hot machine of contrary periodic duty, it can extract the heat energy that is several times as much as self electric power that consumes from low-grade heat sources such as air, water, soil, its heat energy that becomes higher potential temperature as air conditioner cold-heat source, is had the advantage of energy-saving and environmental protection, be widely used in all kinds of buildings at present.But thermodynamic argument has determined under present technical conditions, make the air-cooled heat pump of low level heat source with air, the influence that its efficiency is when freezed, heating capacity greatly is subjected to environment temperature, and contradict with building heat supplying, air conditioner load demand: air conditioner load was big but the heat pump refrigerating ability is low when temperature was high, and corresponding coefficient of refrigerating performance is also low; Big but the heat pump heating capacity of heating demand reduced when temperature was low, and heating efficiency is also low.Therefore the Energy Efficiency Ratio of air source heat pump is generally lower at present, and use is subjected to the region restriction.
Summary of the invention
The objective of the invention is provides a kind of limitation that is not subjected to present air source heat pump for the deficiency that solves above-mentioned technology, enlarge the application region of air-cooled heat pump, reduce the heat pump type air conditioning system energy consumption, improve a kind of half cascade type heat pump cold and heat supply method and air-conditioning system thereof of indoor air quality and comfort level.
In order to achieve the above object, a kind of half cascade type heat pump cold and heat supply method provided by the invention, it comprises adopts the two-stage heat pump loop, it is characterized in that the first order bears sensible heat load, the cold water of producing low-temperature water heating or higher temperature is used for the radiation cooling heat supply, or is used for doing surperficial convection recuperator; Secondary heat pump is born latent heat and new wind load, and the two-stage heat pump is by a water loops overlapping.The cooling and warming ability that the flow that utilizes three-way control valve to regulate branch road can be regulated the two-stage heat pump partially is to adapt to the variation of sensible heat, latent heat load variation and meteorological condition.
A kind of half cascade type heat pump cold and heat supply air-conditioning system that adopts this method to obtain, it comprises the two-stage heat pump loop, it is characterized in that two heat pump loop overlappings, first order heat pump mainly is made up of compressor, four-way change-over valve, expansion valve, heat exchanger, secondary heat pump mainly is made up of compressor, four-way change-over valve, expansion valve, heat exchanger, and the two-stage heat pump carries out overlapping by the water loops of mainly being made up of water pipe and the surperficial or dried surperficial air heat exchanger of radiation heat transfer, electric three passes control valve and water pump; Be divided into two branch roads by three-way control valve after entering the heat exchanger heat exchange from the air conditioner cold and hot water of one-level heat pump heat exchanger, a branch road is flowed through and is converged with another branch road behind the heat exchanger of the heat pump, returns heat exchanger by pump.
A kind of half cascade type heat pump cold and heat supply method and air-conditioning system provided by the invention, in the load of comfort air conditioning system, sensible heat occupies the majority, can adopt the radiation mode cold and heat supply with the cold water (during cooling) of higher temperature or the hot water (during heat supply) of lower temperature, help improving the coefficient of performance of heat pump; When adopting convection type, heat exchanger surface is a dry cooling condition, helps improving indoor air quality.And latent heat only accounts on a small quantity, and available lower temperature low-temperature receiver carries out the method for cooling dehumidification to be handled, and the efficient that the employing cascade type heat pump can be higher obtains the low-temperature receiver of lower temperature.
A kind of half cascade type heat pump cold and heat supply method and air-conditioning system, adopt the dedicated outdoor air system of cascade type heat pump, latent heat and sensible heat are handled respectively, solved the limitation of present air source heat pump, enlarged the application region of air-cooled heat pump, reducing the heat pump type air conditioning system energy consumption, improve indoor air quality and comfort level, is a kind of energy-conservation, comfortable air-conditioning system.
Description of drawings
Fig. 1 is a cascade type heat pump work structuring schematic diagram;
Fig. 2 adopts water cooling heat exchanger work structuring principle schematic.
1,4 compressors; 2,3 four-way change-over valves; 5 expansion valves; 6 heat exchangers; 7 water pumps; 8 heat exchangers; 9 water pipes; 10 radiation heat transfers surface or dried surperficial air heat exchanger; 11 electric three passes control valves; 12 water pipes; 13 water pipes; 14 expansion valves; 15 heat exchangers; 16 heat recovering heat exchangers; 17 heat exchangers.
The specific embodiment
The invention will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1, a kind of half cascade type heat pump cold and heat supply air-conditioning system that present embodiment is described is the overlapping of two heat pumps, first order heat pump is made up of compressor 4, four-way change-over valve 3, expansion valve 5, heat exchanger 6,8 etc., and second level heat pump is made up of compressor 1, four-way change-over valve 2, expansion valve 14, heat exchanger 15,17 etc.The two-stage heat pump carries out overlapping by the water loops of being made up of water pipe 9,12,13 and radiation heat transfer surperficial or dried surperficial air heat exchanger 10, electric three passes control valve 11 and water pump 7 etc.Its workflow is: be divided into 12,13 two by three-way control valve 11 after entering heat exchanger 10 heat exchange from the air conditioner cold and hot water of one-level heat pump heat exchanger 6, flow through heat exchanger 17 backs of the heat pump of branch road 13 are converged with branch road 12, return heat exchanger 8 by pump 7.Heat recovering heat exchanger 16 is used to reclaim the air draft energy, and heat exchanger 15 is the straight swollen coil pipe of refrigerant, handles latent heat or new wind.Regulate the cooling and warming ability that the flow of branch roads 12,13 can be regulated the two-stage heat pump partially by three-way control valve 11, with adapt to sensible heat, latent heat load changes and the variation of meteorological condition.In addition, heat exchanger 6 also can adopt water cooling heat exchanger as shown in Figure 2.
Claims (2)
1, a kind of half cascade type heat pump cold and heat supply method, it comprises the two-stage heat pump loop, it is characterized in that the first order bears sensible heat load, the cold water of producing low-temperature water heating or higher temperature is used for the radiation cooling heat supply, or is used for doing surperficial convection recuperator; Secondary heat pump is born latent heat and new wind load, and the two-stage heat pump is by a water loops overlapping.
2, a kind of half cascade type heat pump cold and heat supply air-conditioning system, it comprises the two-stage heat pump loop, it is characterized in that two heat pump loop overlappings, first order heat pump is mainly by compressor (4), four-way change-over valve (3), expansion valve (5), heat exchanger (6), (8) form, secondary heat pump is mainly by compressor (1), four-way change-over valve (2), expansion valve (14), heat exchanger (15), (17) form, the two-stage heat pump passes through mainly by water pipe (9), (12), (13) and radiation heat transfer surface or do surperficial air heat exchanger (10), the water loops that electric three passes control valve (11) and water pump (7) are formed is carried out overlapping; From the air conditioner cold and hot water of one-level heat pump heat exchanger (6) enter after heat exchanger (10) heat exchange by three-way control valve (11) be divided into (12), (13) two, flow through heat exchanger (17) back of the heat pump of branch road (13) is converged with branch road (12), returns heat exchanger (8) by pump (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410054061A CN100578113C (en) | 2004-08-27 | 2004-08-27 | A kind of half cascade type heat pump cold and heat supply method and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410054061A CN100578113C (en) | 2004-08-27 | 2004-08-27 | A kind of half cascade type heat pump cold and heat supply method and air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
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| CN1587864A true CN1587864A (en) | 2005-03-02 |
| CN100578113C CN100578113C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200410054061A Expired - Fee Related CN100578113C (en) | 2004-08-27 | 2004-08-27 | A kind of half cascade type heat pump cold and heat supply method and air-conditioning system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451467C (en) * | 2006-01-23 | 2009-01-14 | 蒋华 | Combined method and device for treating air |
| CN101690902A (en) * | 2009-09-28 | 2010-04-07 | 秦丙泉 | Ultralow temperature ice trough |
| CN102809198A (en) * | 2012-08-16 | 2012-12-05 | 青岛大学 | Energy-saving temperature-regulating humidity-regulating air processing method |
| CN103134234A (en) * | 2011-11-21 | 2013-06-05 | 桑德克斯有线有限公司 | Annular disposed Stirling heat exchanger |
| CN103363721A (en) * | 2013-07-23 | 2013-10-23 | 上海理工大学 | Secondary heat pump combined system |
| CN104697229A (en) * | 2015-03-24 | 2015-06-10 | 重庆美的通用制冷设备有限公司 | Heat pump unit |
| CN105135552A (en) * | 2015-08-17 | 2015-12-09 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN109506311A (en) * | 2018-12-14 | 2019-03-22 | 东南大学 | A kind of double cold source humiture independence control air conditioner systems of superposition type |
| CN110145887A (en) * | 2019-05-29 | 2019-08-20 | 清华大学 | A graded air handling system |
| CN111306824A (en) * | 2020-03-30 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Overlapping heat pump and control method thereof |
| CN115013889A (en) * | 2022-06-21 | 2022-09-06 | 同济大学 | An environment-independent rotary dehumidification and regeneration system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149389A (en) * | 1978-03-06 | 1979-04-17 | The Trane Company | Heat pump system selectively operable in a cascade mode and method of operation |
| JPH01196468A (en) * | 1988-02-01 | 1989-08-08 | Yazaki Corp | Method and device for driving cooling and heating load |
-
2004
- 2004-08-27 CN CN200410054061A patent/CN100578113C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451467C (en) * | 2006-01-23 | 2009-01-14 | 蒋华 | Combined method and device for treating air |
| CN101690902A (en) * | 2009-09-28 | 2010-04-07 | 秦丙泉 | Ultralow temperature ice trough |
| CN101690902B (en) * | 2009-09-28 | 2013-10-16 | 秦丙泉 | Ultralow temperature ice trough |
| CN103134234A (en) * | 2011-11-21 | 2013-06-05 | 桑德克斯有线有限公司 | Annular disposed Stirling heat exchanger |
| CN102809198A (en) * | 2012-08-16 | 2012-12-05 | 青岛大学 | Energy-saving temperature-regulating humidity-regulating air processing method |
| CN102809198B (en) * | 2012-08-16 | 2014-08-13 | 青岛大学 | Energy-saving temperature-regulating humidity-regulating air processing method |
| CN103363721A (en) * | 2013-07-23 | 2013-10-23 | 上海理工大学 | Secondary heat pump combined system |
| CN103363721B (en) * | 2013-07-23 | 2016-01-20 | 上海理工大学 | Secondary heat pump hybrid system |
| CN104697229B (en) * | 2015-03-24 | 2017-03-01 | 重庆美的通用制冷设备有限公司 | Source pump |
| CN104697229A (en) * | 2015-03-24 | 2015-06-10 | 重庆美的通用制冷设备有限公司 | Heat pump unit |
| CN105135552A (en) * | 2015-08-17 | 2015-12-09 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN109506311A (en) * | 2018-12-14 | 2019-03-22 | 东南大学 | A kind of double cold source humiture independence control air conditioner systems of superposition type |
| CN110145887A (en) * | 2019-05-29 | 2019-08-20 | 清华大学 | A graded air handling system |
| CN111306824A (en) * | 2020-03-30 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Overlapping heat pump and control method thereof |
| CN111306824B (en) * | 2020-03-30 | 2024-03-19 | 宁波奥克斯电气股份有限公司 | Overlapping heat pump and control method thereof |
| CN115013889A (en) * | 2022-06-21 | 2022-09-06 | 同济大学 | An environment-independent rotary dehumidification and regeneration system |
| CN115013889B (en) * | 2022-06-21 | 2024-01-26 | 同济大学 | Environment-independent rotating wheel dehumidification regeneration system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100578113C (en) | 2010-01-06 |
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