CN102911641A - Medium-high temperature heat pump mixed refrigerant containing propane (R290) - Google Patents
Medium-high temperature heat pump mixed refrigerant containing propane (R290) Download PDFInfo
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- CN102911641A CN102911641A CN201210353059XA CN201210353059A CN102911641A CN 102911641 A CN102911641 A CN 102911641A CN 201210353059X A CN201210353059X A CN 201210353059XA CN 201210353059 A CN201210353059 A CN 201210353059A CN 102911641 A CN102911641 A CN 102911641A
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- mixed refrigerant
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Abstract
The invention discloses a medium-high temperature heat pump mixed refrigerant containing propane (R290), which is suitable for a refrigerant of the low-temperature organic Rankine's circulatory system with evaporating temperature of 60-100 DEG C. The mixed refrigerant is a binary mixture composed of R290, R245fa, R124 and R142b according to different mass ratios. The preparation method is as follows: physically mixing the components according to the proportion at normal temperature to obtain corresponding mixed refrigerant. The mixed refrigerant does not damage the ozone layer, has low greenhouse effect, meets environment-protection requirement, has proper thermal parameter and excellent cycle performance, can be directly filled to the HFC134a air condition compressor and does not need to design other compressor. Under design conditions, coefficient of performance is about 4 and net work output per unit mass is more than 150kJ/kg.
Description
Technical field
The invention belongs to the refrigeration agent in heat pump or the air-conditioning system, being specifically related to as condensing temperature is refrigeration working medium in the moderate and high temperature heat system of 60-100 ° of C.
Background technology
For produce and life in a large amount of that exist, to heat energy grade requirement relatively low (temperature is 60-100 ° of C) with alleviating, adopt the heat pump heat supply technology that the total energy utilising efficiency higher than conventional energy-provision way not only arranged, reduce the CO2 discharging, can also effectively utilize the low grade heat energy that contains in industrial exhaust heat, Geothermal energy, sun power and the environment (air, soil, surface water or shallow ground water), reduce the thermal pollution that the waste heat discharging causes.Current, high temperature in the heat pump techniques forward (condensing temperature 80-100 ° of C), high temperature (condensing temperature is higher than 100 ° of C) heat pump future development, and restrict one of key issue of its development, be exactly to lack the cycle fluid that is fit to.The material that in the past once was used as high temperature heat pump system working medium has CFC11, CFC113, CFC114 etc., they are CFC class material, its depletion of the ozone layer gesture (ODP) and global warming potential (GWP) are all very large, and developed country is in forbidding in 1996, and developing country also will be in forbidding in 2010.Using at present more is air-conditioning-heat pump take HCFC22 or its surrogate R407C etc. as working medium, and the hot water top temperature that can provide is 50-55 ° of C, and the heat energy of higher temperature level can't be provided.Development environment is friendly, the good novel working medium of thermal performance, and is most important to the development of moderate and high temperature heat technology.
Mixing medium provided by the invention is for condensing temperature is that the moderate and high temperature heat system applies of 60-100 ° of C is developed, and also can be used as centrifugal refrigerating, air conditioning unit working medium.
Summary of the invention
The objective of the invention is, one group of new working medium that the moderate and high temperature heat unit is used that is suitable for that contains propane (R290) is provided, make its environmental characteristics and environmental performance all good.
Content introduction of the present invention: carry out the constituent element combination according to the principle of having complementary advantages, screening obtains the medium-high temperature heat pump mixture of following excellent property.Specifically comprise: propane (R290), 1,1,1,3,3-pentafluoropropane (R245fa), a chloro-1,2,2,2-Tetrafluoroethane (R124) and a chlorine-1,1-difluoroethane (R142b).The basic parameter of each constituent element material is as shown in table 1.
The medium-high temperature heat pump mixture that contains HC290 that the present invention proposes is by being comprised of propane (R290) and 1,1,1,3,3-pentafluoropropane (R245fa); Or by propane (R290) and a chloro-1,2,2,2-Tetrafluoroethane (R124) forms; Or formed by propane (R290) and a chlorine-1,1-difluoroethane (R142b).
The concrete proportioning (mass percent) of above-mentioned each constituent element material is:
R290/R245fa 2-97/3-98%，
R290/R124 2-97/3-98%，
R290/R142b 2-97/3-98%，
More than each constituent element material mass percentage ratio sum of every kind of mixing medium be 100%.
The preparation method of above-mentioned mixing medium is each constituent element material to be carried out physical mixed at normal temperatures by the quality proportioning of its appointment get final product.
The present invention has the following advantages and beneficial effect:
(1) environmental performance: ODP of the present invention equals zero or is lower, and environmental characteristics is good.
(2) thermal parameter is suitable: under moderate and high temperature heat system design operating mode, stress level is not higher than the stress level of HFC134a under the standard air conditioning condition, and row's temperature is lower than the exhaust temperature restriction of HFC134a compressor.Therefore, can directly working medium of the present invention be poured into the compressor of air conditioner of HFC134a, need not to be working medium otherwise designed compressor of the present invention.
(3) cycle performance is good: the present invention is heating that COP is about 4, more than 150kJ/kg, the unit volume heating capacity is at 3000kJ/m substantially for the unit mass heat supplied under the above-mentioned design conditions
3More than, cycle performance is good.
The basic parameter of contained constituent element in table 1 medium-high temperature heat pump mixture
T
b: normal boiling point, T
c: critical temperature, P
c: emergent pressure
Embodiment
Embodiment 1: get 30
Mass%R290 and 70
Mass%R245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 2: get 55
Mass%R290 and 45
Mass%R245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 3: get 80
Mass%R290 and 20
Mass%R245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 4: get 2
Mass%R290 and 98
Mass%R124 carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 5: get 45
Mass%R290 and 55
Mass%R124 carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 6: get 85
Mass%R290 and 15
Mass%R124 carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 7: get 6
Mass%R290 and 94
Mass%R142b carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 8: get 30
Mass%R290 and 70
Mass%R142b carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 9: get 80
Mass%R290 and 20
Mass%R142b carries out after the physical mixed at normal temperatures as refrigeration agent.
The design conditions of heat pump are taken as: average vaporization temperature is 45 ° of C, and average 90 ° of C of condensing temperature, 2 ° of C(of suction superheat avoid wet compression with suitable discharge superheat with assurance to some working medium), condensate depression is 0 ° of C.Take closed piston compressor as example, compressor heat efficient gets 0.9, and electrical efficiency, mechanical efficiency are 0.75, and the clearance volume coefficient gets 0.03.
According to cycle calculations, the relevant parameters of above-mentioned 9 embodiment and cycle performance index are as shown in table 2.
Table 2 embodiment of the invention performance
Claims (2)
1. the medium-high temperature heat pump mixture that contains propane (R290) is characterized in that being comprised of propane (R290) and 1,1,1,3,3-pentafluoropropane (R245fa); Or by propane (R290) and a chloro-1,2,2,2-Tetrafluoroethane (R124) forms; Or formed by propane (R290) and a chlorine-1,1-difluoroethane (R142b).
2. according to the medium-high temperature heat pump mixture that contains propane (R290) claimed in claim 1, it is characterized in that the concrete proportioning (mass percent) of described each constituent element material is:
R290/R245fa 2-97/3-98%，
R290/R124 2-97/3-98%，
R290/R142b 2-97/3-98%，
More than each constituent element material mass percentage ratio sum of every kind of mixing medium be 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353059XA CN102911641A (en) | 2010-07-09 | 2010-07-09 | Medium-high temperature heat pump mixed refrigerant containing propane (R290) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353059XA CN102911641A (en) | 2010-07-09 | 2010-07-09 | Medium-high temperature heat pump mixed refrigerant containing propane (R290) |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102228654A Division CN101892033A (en) | 2010-07-09 | 2010-07-09 | Hydrocarbon-containing medium-high temperature heat pump mixture |
Publications (1)
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|---|---|
| CN102911641A true CN102911641A (en) | 2013-02-06 |
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| CN201210353059XA Pending CN102911641A (en) | 2010-07-09 | 2010-07-09 | Medium-high temperature heat pump mixed refrigerant containing propane (R290) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106777A (en) * | 2021-11-18 | 2022-03-01 | 湖北瑞能华辉能源管理有限公司 | High-temperature energy-saving environment-friendly heat pump working medium and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5788886A (en) * | 1997-05-05 | 1998-08-04 | E. I. Du Pont De Nemours And Company | Pentafluoropropane compositions |
| JPH10273548A (en) * | 1997-03-28 | 1998-10-13 | Sekisui Plastics Co Ltd | Polystyrene resin foam and production thereof |
-
2010
- 2010-07-09 CN CN201210353059XA patent/CN102911641A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10273548A (en) * | 1997-03-28 | 1998-10-13 | Sekisui Plastics Co Ltd | Polystyrene resin foam and production thereof |
| US5788886A (en) * | 1997-05-05 | 1998-08-04 | E. I. Du Pont De Nemours And Company | Pentafluoropropane compositions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106777A (en) * | 2021-11-18 | 2022-03-01 | 湖北瑞能华辉能源管理有限公司 | High-temperature energy-saving environment-friendly heat pump working medium and application thereof |
| CN114106777B (en) * | 2021-11-18 | 2024-01-16 | 湖北瑞能华辉能源管理有限公司 | High-temperature energy-saving environment-friendly heat pump working medium and application thereof |
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Application publication date: 20130206 |