CN1299040A - Middle-and high-temp heat pump equipment - Google Patents
Middle-and high-temp heat pump equipment Download PDFInfo
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- CN1299040A CN1299040A CN 00136774 CN00136774A CN1299040A CN 1299040 A CN1299040 A CN 1299040A CN 00136774 CN00136774 CN 00136774 CN 00136774 A CN00136774 A CN 00136774A CN 1299040 A CN1299040 A CN 1299040A
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- heat pump
- temperature
- expansion valve
- heat
- subcooler
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- Heat-Pump Type And Storage Water Heaters (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
A high and medium temperature heat pump is composed of a compressor, a condenser, an evaporator and an expansion valve. The super cooler and special expension valve are used to increase the energy efficiency ratio. The heat pump adopts zeotropic multi-component mixture work medium with less environmental pollution, such as R22, R142b R152a, R21, etc. The heat pump has an evaporation temperature of about 25 deg.C, condensation temperature oven 80 deg.c, condensation pressure lower than 24 bar and system energy efficiency ratio over 3. It can reduce the drainage temperature from 40 deg.C to below 30 deg.C and raise heating water temperature to oven 70 deg.c or up to 88 deg.C.
Description
The invention belongs to air-conditioning, heating Cooling and Heat Source equipment.
The heat pump type air conditioner unit of domestic many manufacturers can only provide the water of the heat supply about 50 ℃ at present.Supply water temperature is the highest can only reach 52 ℃ in the system of water source heat pump design that Tsinghua Timefound Co., Ltd. produces.With about 50 ℃ hot water heating, can only be by means of fan coil, and can not utilize the most frequently used cast iron type heat-radiator at present.Using fan coil certainly will increase a large amount of investments, not be suitable for common wage-earners and use.If utilize the source pump of existing producer that the water of the heat supply more than 70 ℃ is provided, condensing pressure all will be above 40bar, and this will cause compressor to burn rapidly, and the hidden danger that is caused by high pressure also will greatly increase in addition.
In order to improve utilization rate, reach the discharge standard of country to geothermal energy resources or industrial exhaust heat; Not increase hot burden for users, still adopt the heat radiation of plain cast iron formula on the other hand, the purpose of this invention is to provide a kind of device of moderate and high temperature heat efficiently for principle.
Constructional device of the present invention as shown in the figure.The moderate and high temperature heat device has: totally-enclosed or semi-closed compressor (1), condenser (2), evaporimeter (8) is a plate type heat exchanger, more than three kinds of equipment in addition expansion valve (7) be the four big critical components that constitute the compression type heat pumping system.Superheater (9) and subcooler (4) are the ad hoc parts of putting in order to improve systematic energy efficiency ratio, and they are shell-and-tube heat exchanger.Above-mentioned parts are connected and composed heat pump assembly by order illustrated.Wherein one of expansion valve (5) import that is terminated at subcooler (4) one sides (pipe in), the outlet of this side is connected to compressor (1), and the other end of expansion valve (5) is parallel to the import and the back pressure regulating valve (10) of subcooler (4) opposite side (pipe is outer).Device for drying and filtering (6), fluid reservoir (3) and two back pressure regulating valves (10) are the auxiliary equipment for guaranteeing that system's long-term safety operation is provided with.The cycle fluid of middle high temperature service adopts zeotropic mixing circulation working medium, and by F-22 (R22), chlorodifluoroethane (R142b), Dichloromonofluoromethane (R21) ternary mixture are formed, and the percentage of its quality is; R22,34%-46%; R142b, 12%-28%; R21,37%-48%.Also can adopt R22/R152a/R21, the per distribution ratio of its quality is: R22,44%-58%; R152a, 9%-16%:R21,37%-48% perhaps is made up of R22/R21, and its quality per distribution ratio is: R22,38%-50%; R21,50%-62%.
For the name of cold-producing medium (working medium), adopt unified rule:
R (m-1) (n+1) (x) (y) (z) its molecular formula be C
mHnF
xCl
yBr
2, and n+x+y+z=2m+2, as being arranged behind the code name, a or b represent ppolymorphism.
The present invention has adopted subcooler (4) and superheater (9), wherein the interior extratubal fluid of the pipe of flowing pipe shell-type subcooler (4) heat exchange is the mixed working fluid in the system, a spot of working medium cool off in advance through expansion valve (5) in the pipe, will flow through expansion valve (7) and absorb the heat of underground heat tail water (GEOTHERMAL WATER that preparation is discharged after utilizing) in evaporimeter (8) of the outer a large amount of fluids of pipe.And the fluid of the superheater of flowing through (9) both sides (pipe is inside and outside) is respectively mixed working fluid and a spot of underground heat tail water.Owing to adopted novel non-azeotropic mixed working medium, and in subcooler (4), adopted specific pipeline to connect, made the efficient of this heat pump assembly be improved.Two back pressure regulating valves can accurately be regulated and control the condensation temperature and the evaporating temperature of mixed working fluid, to guarantee to reach designing requirement.
One of 3 kinds of cycle fluids are poured into the moderate and high temperature heat device, can reach following technical indicator: evaporating temperature is about 25 ℃, condensation temperature is more than 80 ℃, condensing pressure is lower than 24bar, and systematic energy efficiency ratio is in (Energy Efficiency Ratio: the unit interval is used for the electric energy that energy/the unit interval compressor is consumed of heat supply) more than 3.Can be reduced to the draining about 40 ℃ below 30 ℃, satisfy discharging standards, the heat supply water temperature can be brought up to more than 70 ℃, reaches as high as 88 ℃, satisfies the temperature requirement of plain cast iron radiator.
The key of using the technology of the present invention is to have suitable low-temperature heat source, is advisable with 40 ℃ as underground heat tail water, water for industrial use waste heat.Calculate each parts of heat pump according to the size of heating load, could guarantee that cycle fluid rationally moves therein, and obtain desirable operational effect.Using this device as Cooling and Heat Source equipment, can improve the utilization rate to geothermal energy or industrial exhaust heat, is an energy-conservation high-tech product that combines with environmental protection.
Claims (2)
1. the moderate and high temperature heat device has: compressor (1), condenser (2), fluid reservoir (3), subcooler (4), expansion valve (5), (7), device for drying and filtering (6), evaporimeter (8), superheater (9), control valve (10), cycle fluid is by F-22 (R22), Dichloromonofluoromethane (R21), chlorodifluoroethane (R142b) and Difluoroethane (R152a) are formed, it is characterized in that the above-mentioned parts formation heat pump assembly that is linked in sequence, wherein one of expansion valve (5) import that is terminated at subcooler (4) one sides, the outlet of this side is connected to compressor (1), and the other end of expansion valve (5) is parallel to the import and the back pressure regulating valve (10) of subcooler (4) opposite side, and the cycle fluid in this device is by F-22 (R22), chlorodifluoroethane (R142b), Dichloromonofluoromethane (R21) ternary mixture is formed, the per distribution ratio of its quality is: R22,34%-46%; R142b, 12%-28%; R21,37%-48%.
2. according to the described moderate and high temperature heat device of claim 1, it is characterized in that described cycle fluid also can be made up of R22/R152a/R21, the per distribution ratio of its quality is: R22,44%-58%; R152a, 9%-16%; R21,37%-48% perhaps is made up of R22/R21, and its quality per distribution ratio is: R22,38%-50%; R21,50%-62%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001367749A CN1171052C (en) | 2000-12-29 | 2000-12-29 | Middle-and high-temp heat pump equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001367749A CN1171052C (en) | 2000-12-29 | 2000-12-29 | Middle-and high-temp heat pump equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1299040A true CN1299040A (en) | 2001-06-13 |
| CN1171052C CN1171052C (en) | 2004-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001367749A Expired - Fee Related CN1171052C (en) | 2000-12-29 | 2000-12-29 | Middle-and high-temp heat pump equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN1171052C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410599C (en) * | 2006-04-08 | 2008-08-13 | 烟台蓝德空调工业科技有限公司 | High temperature heat pump set for recovering afterheat of power plant and printing and dyeing industry |
| CN100434492C (en) * | 2005-12-09 | 2008-11-19 | 天津大学 | Triple mixed working medium 2 for immediate-high temperature |
| CN101852514A (en) * | 2010-06-02 | 2010-10-06 | 周少瑛 | Heat energy exchange unit |
| CN102095268A (en) * | 2011-03-02 | 2011-06-15 | 上海交通大学 | Propane refrigerant air conditioner with heat regenerator |
| CN101671544B (en) * | 2009-09-22 | 2011-07-20 | 山东东岳化工有限公司 | Refrigerant composition |
| CN104534707A (en) * | 2015-01-14 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | Special air conditioner for wide temperature region |
-
2000
- 2000-12-29 CN CNB001367749A patent/CN1171052C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434492C (en) * | 2005-12-09 | 2008-11-19 | 天津大学 | Triple mixed working medium 2 for immediate-high temperature |
| CN100410599C (en) * | 2006-04-08 | 2008-08-13 | 烟台蓝德空调工业科技有限公司 | High temperature heat pump set for recovering afterheat of power plant and printing and dyeing industry |
| CN101671544B (en) * | 2009-09-22 | 2011-07-20 | 山东东岳化工有限公司 | Refrigerant composition |
| CN101852514A (en) * | 2010-06-02 | 2010-10-06 | 周少瑛 | Heat energy exchange unit |
| CN102095268A (en) * | 2011-03-02 | 2011-06-15 | 上海交通大学 | Propane refrigerant air conditioner with heat regenerator |
| CN104534707A (en) * | 2015-01-14 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | Special air conditioner for wide temperature region |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1171052C (en) | 2004-10-13 |
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