CN1328350C - 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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- CN1328350C CN1328350C CNB2005101195652A CN200510119565A CN1328350C CN 1328350 C CN1328350 C CN 1328350C CN B2005101195652 A CNB2005101195652 A CN B2005101195652A CN 200510119565 A CN200510119565 A CN 200510119565A CN 1328350 C CN1328350 C CN 1328350C
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Abstract
The present invention relates to middle and high temperature heat pump mixed working medium containing HFC245 fa, which can be used as refrigerant of a middle and high temperature heat pump system with condensing temperature of 60 DEG C to 120 DEG C. The mixed working medium contains four kinds of component substances, such as HFC245 fa, HFC134a, HFC152a and R13I1. Binary mixture and ternary mixture are formed by the four kinds of the substances according to different mass ratios. The present invention has a preparation method that the components are physically mixed according to the designated compounding ratio under normal temperature, and the corresponding mixed working medium is obtained. The present invention does not damage the ozonosphere and accords with environmental protection requirements, the green house effect is lower, thermal parameters are proper, and the cycle performance is good. The present invention can use an HCFC22 air conditioning compressor for the optimum design of a middle and high temperature heat pump system in new working medium, can directly apply the new working medium to the original HCFC22 air conditioning unit, and changes the original air conditioning unit into a middle and high temperature heat pump unit in the new working medium.
Description
The present invention is that invention and created name is dividing an application of " one group of moderate and high temperature heat mixing medium that contains HFCs and HCs ", and the applying date is on April 5th, 2004, and application number is 200410018832.2.
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 a kind of new working medium that the moderate and high temperature heat unit is used that is suitable for, make its environmental characteristics and cycle performance all good.
Content introduction of the present invention: a kind of moderate and high temperature heat mixing medium that contains HFC245fa, contain 1,1,1,3,3-pentafluoropropane (HFC245fa), 1,1,1,2-Tetrafluoroethane (HFC134a), 1,1-C2H4F2 C2H4F2 (HFC152a) is totally three kinds of constituent element materials.From above-mentioned three 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, mass percent is (30%-90%): (0-35%): (10%-70%), wherein the HFC152a component is non-vanishing, and each constituent element material mass percentage ratio sum of every kind of mixing medium is 100%.
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 |
| 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.
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, according to cycle calculations, the foregoing description have related parameter and cycle performance index as shown in table 2.
Table 2 embodiment of the invention performance
| Parameter and performance | Embodiment 1 |
| Evaporating pressure MPa | 0.543 |
| Condensing pressure MPa | 1.975 |
| Pressure ratio | 3.64 |
| Exhaust temperature ℃ | 109.4 |
| COP | 4.09 |
| Heat supplied kJ/kg | 183.3 |
| Unit volume heating capacity kJ/m 3 | 3981 |
| GWP | 547 |
Claims (1)
1. contain 1,1,1,3, the moderate and high temperature heat mixing medium of 3-pentafluoropropane comprises 1,1,1,3, the 3-pentafluoropropane, 1,1,1,2-Tetrafluoroethane, 1,1-C2H4F2 C2H4F2 constituent element material is characterized in that described mixing medium is by 1,1,1,2-Tetrafluoroethane, 1,1-C2H4F2 C2H4F2 and 1,1,1,3, the 3-pentafluoropropane is formed, and mass percent is (30%-90%): (0-35%): (10%-70%), and wherein 1,1-C2H4F2 C2H4F2 component is non-vanishing, and each constituent element material mass percentage ratio sum of every kind of mixing medium is 100%.
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 CN1782016A (en) | 2006-06-07 |
| CN1328350C true CN1328350C (en) | 2007-07-25 |
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| 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746936B (en) * | 2019-10-11 | 2021-05-04 | 金华永和氟化工有限公司 | Environment-friendly mixed refrigerant |
| CN114507508B (en) * | 2022-03-15 | 2023-03-21 | 浙江大学 | Application of heat pump mixed working medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136064A (en) * | 1995-04-20 | 1996-11-20 | 埃尔夫阿托化学有限公司 | Pseudoazeotropic mixtures based on difluoromethane and on pentafluorodimethyl ether, and applications thereof as refrigerants |
| WO1997034961A1 (en) * | 1996-03-22 | 1997-09-25 | Goble George H | DROP-IN SUBSTITUTES FOR 1,1,1,2-TETRAFLUOROETHANE (R-134a) REFRIGERANT |
| WO2002026913A2 (en) * | 2000-09-27 | 2002-04-04 | Honeywell International Inc. | Fluorocarbon refrigerant compositions |
| CN1425735A (en) * | 2003-01-20 | 2003-06-25 | 天津大学 | A group of medium and high temperature heat pump mixed working medium |
-
2004
- 2004-04-05 CN CNB2005101195652A patent/CN1328350C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136064A (en) * | 1995-04-20 | 1996-11-20 | 埃尔夫阿托化学有限公司 | Pseudoazeotropic mixtures based on difluoromethane and on pentafluorodimethyl ether, and applications thereof as refrigerants |
| WO1997034961A1 (en) * | 1996-03-22 | 1997-09-25 | Goble George H | DROP-IN SUBSTITUTES FOR 1,1,1,2-TETRAFLUOROETHANE (R-134a) REFRIGERANT |
| WO2002026913A2 (en) * | 2000-09-27 | 2002-04-04 | Honeywell International Inc. | Fluorocarbon refrigerant compositions |
| CN1425735A (en) * | 2003-01-20 | 2003-06-25 | 天津大学 | A group of medium and high temperature heat pump mixed working medium |
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| Publication number | Publication date |
|---|---|
| CN1782016A (en) | 2006-06-07 |
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Granted publication date: 20070725 Termination date: 20130405 |