CN1782016A - Middle and high temperature heat pump mixed working medium containing HFC245fa - Google Patents
Middle and high temperature heat pump mixed working medium containing HFC245fa Download PDFInfo
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- CN1782016A CN1782016A CN 200510119565 CN200510119565A CN1782016A CN 1782016 A CN1782016 A CN 1782016A CN 200510119565 CN200510119565 CN 200510119565 CN 200510119565 A CN200510119565 A CN 200510119565A CN 1782016 A CN1782016 A CN 1782016A
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Abstract
The mixed middle and high temperature heat pump working medium containing HFC245FA is suitable for use as refrigerant in middle and high temperature heat pump system of condensing temperature 60-120 deg.c. The mixed working medium contains four kinds of matter, R13I1, HFC245fa, HFC134a and HFC152a in different mass proportions to constitute binary and ternary mixtures. The mixed working medium is prepared through mixing the components in designated proportion physically at normal temperature. The present invention has no damage on ozone layer, very low green house effect potential, proper thermotechnical parameters and excellent circulation performance, and may be used in middle and high temperature heat pump system of new and available HCFC22 air conditioner compressor.
Description
The present invention is dividing an application of " one group of moderate and high temperature heat mixing medium that contains HFCs and HCs ", the applying date is on April 5th, 2004, application number is 200410018832.2, and invention and created name is " one group of moderate and high temperature heat mixing medium that contains HFCs and HCs ".
Technical field
The invention belongs to the refrigeration agent in heat pump or refrigeration, the air-conditioning system, referring more particularly to as condensing temperature is refrigeration working medium in 60-120 ℃ the moderate and high temperature heat system.
Background technology
For produce and life in a large amount of that exist, to heat energy grade requirement relatively low (temperature is 60-160 ℃) with can link, adopt the heat pump heat supply technology that the total energy utilising efficiency higher than conventional energy-provision way not only arranged, minimizing CO
2Discharging (thereby reducing Greenhouse effect) also can 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), reduces the thermal pollution that the waste heat discharging causes.Current, high temperature in the heat pump techniques forward (condensing temperature is 80-100 ℃), high temperature (condensing temperature is higher than 100 ℃) heat pump direction develop, and restrict one of key issue of its development, are 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 big, and developed country is in forbidding in 1996, and developing country also will be in forbidding in 2010.Using at present more is to be the air-conditioning-heat pump of working medium with HCFC22 or its surrogate R407C, R410A etc., the hot water top temperature that can provide is 50-55 ℃, and (the high again cycle performance that not only makes of temperature worsens, if surpassing the pressure and the warm upper limit of row of system causes the accident easily), and the heat energy of higher temperature level can't be provided.Development environment close friend, the good novel working medium of thermal performance are most important to the development of moderate and high temperature heat technology.
Mixing medium provided by the invention is for condensing temperature is that 60-120 ℃ moderate and high temperature heat system applies is developed, and also can be used as centrifugal refrigerating, air conditioning unit working medium.
Summary of the invention
The purpose of this invention is to provide one group and be suitable for the new working medium that the moderate and high temperature heat unit is used, make its environmental characteristics and cycle performance all good.
Content introduction of the present invention: one group of moderate and high temperature heat mixing medium that contains HFC245fa, contain 1,1,1,3,3-pentafluoropropane (HFC245fa), CF3I (R13I1), 1,1,1,2-Tetrafluoroethane (HFC134a), 1,1-C2H4F2 C2H4F2 (HFC152a) is totally four kinds of constituent element materials.From above-mentioned four kinds of materials, carry out the constituent element combination according to the principle of having complementary advantages, screening obtains the moderate and high temperature heat mixing medium of following excellent property.Described moderate and high temperature heat mixing medium is made up of HFC134a, HFC152a and HFC245fa, and mass percent is (30-90): (0-35): (10-70); Or form by HFC134a, R13I1 and HFC245fa, mass percent is (0-55): (35-95): (5-65); Or form by HFC152a, R13I1 and HFC245fa, mass percent is (5-40): (0-50): (10-60).
The preparation method of mixing medium of the present invention is each constituent element material to be carried out physical mixed at normal temperatures by its specified quality proportioning get final product.The basic parameter of each constituent element material is as shown in table 1.
The present invention has the following advantages and beneficial effect:
(1) compliance with environmental protection requirements: ODP of the present invention equals zero, and the GWP in most mixing mediums is lower, and as seen its environmental characteristics is good, meets the requirement of protecting ozonosphere, reducing Greenhouse effect.(2) thermal parameter is suitable: under the moderate and high temperature heat design conditions, and close under the standard air conditioning condition of stress level and HCFC22, row's temperature is lower than the exhaust temperature of HCFC22 compressor and limits.Therefore, can adopt the compressor of air conditioner of HCFC22 in the moderate and high temperature heat system design, need not to be working medium of the present invention specialized designs compressor separately.(3) cycle performance is good: the heat supply COP of the present invention under the moderate and high temperature heat design conditions substantially about 4, the unit mass heat supplied substantially more than 110kJ/kg, the unit volume heat supplied is at 3600kJ/m
3More than, cycle performance is good.The interchanger load is close with the HCFC22 air-conditioning system, working medium of the present invention directly can be poured into (some working medium requires more oil change) air conditioning unit in existing HCFC22, be translated into the moderate and high temperature heat unit of new working medium, efficiency and unit main hardware matching degree can guarantee to circulate.
The basic parameter of contained constituent element in the table 1 moderate and high temperature heat mixing medium
T
b: normal boiling point, T
c: critical temperature, P
c: emergent pressure
| Constituent element | Title | Molecular formula | Molecular weight | T b ℃ | T c ℃ | P c MPa | ODP | GWP |
| R13I1 | CF3I | CF 3I | 195.9 | -21.83 | 123.29 | 3.953 | 0 | 700 |
| HFC134a | 1,1,1, the 2-Tetrafluoroethane | CF 3CH 2F | 102.0 | -26.10 | 101.16 | 4.056 | 0 | 1300 |
| HFC152a | 1, the 1-C2H4F2 C2H4F2 | CHF 2CH 3 | 66.1 | -24.2 | 113.29 | 4.520 | 0 | 150 |
| HFC245fa | 1,1,1,3, the 3-pentafluoropropane | CF 3CH 2CHF 2 | 134.0 | 15.30 | 157.50 | 3.644 | 0 | 790 |
Embodiment
Embodiment 1: get 16
Mass%HFC134a, 35
Mass%HFC152a, 49
Mass%HFC245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 2: get 31
Mass%HFC134a, 23
Mass%R13I1,46
Mass%HFC245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 3: get 8
Mass%HFC152a, 70
Mass%R13I1,22
Mass%HFC245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
If the design conditions of heat pump are taken as: average vaporization temperature is 40 ℃, average condensing temperature is 90 ℃, the suction superheat temperature be 5 ℃ (to some working medium, get suitable exhaust superheating temperature to guarantee to avoid wet compression), supercooling temperature is 5 ℃, it is 75% that compression process is decided entropic efficiency, and according to cycle calculations, above-mentioned 3 embodiment have related parameter and cycle performance index as shown in table 2.
Table 2 embodiment of the invention performance
| Parameter and performance | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Evaporating pressure MPa | 0.543 | 0.472 | 0.555 |
| Condensing pressure MPa | 1.975 | 1.756 | 1.872 |
| Pressure ratio | 3.64 | 3.72 | 3.37 |
| Exhaust temperature ℃ | 109.4 | 104.8 | 107.6 |
| COP | 4.09 | 4.10 | 4.09 |
| Heat supplied kJ/kg | 183.3 | 135.7 | 104.7 |
| Unit volume heating capacity kJ/m 3 | 3981 | 3487 | 3845 |
| GWP | 547 | 902 | 613 |
Claims (1)
1. one group of moderate and high temperature heat mixing medium that contains HFC245fa contains HFC245fa, R13I1, HFC134a, HFC152a constituent element material is characterized in that described mixing medium is made up of HFC134a, HFC152a and HFC 245fa, and mass percent is (30-90): (0-35): (10-70); Or form by HFC134a, R13I1 and HFC245fa, mass percent is (0-55): (35-95): (5-65); Or form by HFC152a, R13I1 and HFC245fa, mass percent is (5-40): (0-50): (10-60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101195652A CN1328350C (en) | 2004-04-05 | 2004-04-05 | Middle and high temperature heat pump mixed working medium containing HFC245fa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101195652A CN1328350C (en) | 2004-04-05 | 2004-04-05 | Middle and high temperature heat pump mixed working medium containing HFC245fa |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018832 Division CN1563256A (en) | 2004-04-05 | 2004-04-05 | A group of mixed working media, containing HFCs and HCs for heat pump at mid and high temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1782016A true CN1782016A (en) | 2006-06-07 |
| CN1328350C CN1328350C (en) | 2007-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101195652A Expired - Fee Related CN1328350C (en) | 2004-04-05 | 2004-04-05 | Middle and high temperature heat pump mixed working medium containing HFC245fa |
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| CN (1) | CN1328350C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746936A (en) * | 2019-10-11 | 2020-02-04 | 金华永和氟化工有限公司 | Environment-friendly mixed refrigerant |
| CN114507508A (en) * | 2022-03-15 | 2022-05-17 | 浙江大学 | Application of heat pump mixed working medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2733241B1 (en) * | 1995-04-20 | 1997-05-30 | Atochem Elf Sa | PSEUDO-AZEOTROPIC MIXTURES BASED ON DIFLUOROMETHANE AND PENTAFLUORODIMETHYLETHER, AND THEIR APPLICATIONS AS REFRIGERANTS |
| US5954995A (en) * | 1996-03-22 | 1999-09-21 | Goble; George H. | Drop-in substitutes for 1,1,1,2-tetrafluoroethane (R-134a) refrigerant |
| US6526764B1 (en) * | 2000-09-27 | 2003-03-04 | Honeywell International Inc. | Hydrofluorocarbon refrigerant compositions soluble in lubricating oil |
| CN100400615C (en) * | 2003-01-20 | 2008-07-09 | 天津大学 | Medium-high temperature hot pumping mixed working medium containing HFC-152a |
-
2004
- 2004-04-05 CN CNB2005101195652A patent/CN1328350C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746936A (en) * | 2019-10-11 | 2020-02-04 | 金华永和氟化工有限公司 | Environment-friendly mixed refrigerant |
| CN110746936B (en) * | 2019-10-11 | 2021-05-04 | 金华永和氟化工有限公司 | Environment-friendly mixed refrigerant |
| CN114507508A (en) * | 2022-03-15 | 2022-05-17 | 浙江大学 | Application of heat pump mixed working medium |
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| Publication number | Publication date |
|---|---|
| CN1328350C (en) | 2007-07-25 |
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Granted publication date: 20070725 Termination date: 20130405 |