CN1159406C - Refrigerating medium for heat pump of high-temp water source - Google Patents
Refrigerating medium for heat pump of high-temp water source Download PDFInfo
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- CN1159406C CN1159406C CNB011204346A CN01120434A CN1159406C CN 1159406 C CN1159406 C CN 1159406C CN B011204346 A CNB011204346 A CN B011204346A CN 01120434 A CN01120434 A CN 01120434A CN 1159406 C CN1159406 C CN 1159406C
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- heat pump
- water source
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- refrigerant
- temperature water
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Abstract
The present invention relates to a refrigerating medium for a heat pump of a high-temperature water source, particularly to a refrigerant for a heat pump of a high-temperature water source. The refrigerant contains chlorine-1, 2, 2, 2-tetrafluoroethane (HCFC-124) and 1-chlorine-1, 1-1-difluoroethane (HCFC-142b) and isobutane (HC-600a) can be added to the two ingredients. The refrigerant is prepared by physically mixing the ingredients in a liquid phase state according to corresponding proportions. The refrigerant of the present invention has the advantages of no basic damage to the ozonosphere, low greenhouse effect influence, environmental protection, no toxicity, incombustibility and good thermal performance and parameter and can be directly used in the heat pump of a high-temperature water source by means of a freon-22 refrigerating system, wherein the compressor and the main parts of the system are not changed and the production line is not reformed.
Description
Affiliated field
The invention belongs to a kind of refrigeration agent, relate in particular to the refrigeration agent that a kind of heat pump of high-temp water source uses.
Background technology
Water source heat pump technology is to utilize low temperature Lowlevel thermal energy resources such as GEOTHERMAL WATER, underground water, surface water (river, lake water, seawater), trade effluent, and employing heat pump principle, by a spot of electric energy input Lowlevel thermal energy is shifted to high level heat, thereby realize a kind of energy-conserving and environment-protective technology of heating and cooling.Characteristics such as that water resource heat pump has is energy-efficient, stable and reliable operation, obvious environment benefit, a tractor serves several purposes.Since water resource heat pump have higher efficient, again be subjected to hardly envrionment temperature in each in season influence, can effectively utilize characteristics such as the waste heat energy, be a main direction of studying of present refrigeration, air conditioner industry therefore.
The high temperature refrigerant that in the past was used as water resource heat pump usually is CFC-11 and CFC-114 etc.But because CFC-11 and CFC-114 all belong to CFC class material, the latent value ODP of its ozone depletion is respectively 1.0 and 0.85, atmospheric ozone layer there is serious destruction, and the influence of their Greenhouse effect is also very big, its chamber effect potential value GWP is respectively 4600 and 9800, developed country is in forbidding in 1996, and developing country also will be in forbidding in 2010.So it is very necessary developing environment amenable heat pump of high-temp water source working medium
At present, the used working medium of water resource heat pump mostly is freonll-11-22 (HCFC-22) greatly, but very high leaving water temperature(LWT) can not be provided, and environmental-protecting performance can not be satisfactory.Water resource heat pump often needs to provide the hot water greater than 60 ℃ if be used for district heating, and the condensing temperature of working medium in condenser generally needs more than 70 ℃.Can only arrive 50～55 ℃ and the hot water that common air-conditioning heat pump handpiece Water Chilling Units refrigeration agent HCFC-22 commonly used provides is the highest, high more then condensing pressure too high (up to tens normal atmosphere), cycle performance worsens, have a strong impact on the configuration of equipment, system and the pipeline of heat pump set, and heating plant commonly used, promptly the heat dissipation capacity of scatterer reduces with hot water temperature's reduction.Therefore need to adopt the higher relatively refrigeration agent of normal boiling point, promptly so-called high temperature refrigerant is to guarantee suitable heating effect.
Summary of the invention
The present invention is intended to research and develop a kind of new working medium that is suitable for the heat pump of high-temp water source unit, makes it can meet the protection ozonosphere, reduces the environmental protection requirement of Greenhouse effect; Have thermal parameter and thermal property preferably again, safety, reliable, and compatible with existing HCFC-22 handpiece Water Chilling Units equipment with refrigeration oil, can directly charge, higher leaving water temperature(LWT) is provided.
This refrigeration working medium provided by the invention is characterized in that this working medium contains a chloro-1,2,2,2-Tetrafluoroethane (HCFC-124) and 1-one chloro-1, and two kinds of materials of 1-C2H4F2 C2H4F2 (HCFC-142b), its component concentration (mass percent) is respectively:
One chloro-1,2,2,2-Tetrafluoroethane: 75%-95%
1-one chloro-1,1-C2H4F2 C2H4F2: 5%-25%
Also can add Trimethylmethane (HC-600a) in above-mentioned two kinds of components, its component concentration (mass percent) is respectively:
One chloro-1,2,2,2-Tetrafluoroethane: 75%-95%
1-one chloro-1,1-C2H4F2 C2H4F2: 3%-22%
Trimethylmethane: 1%-5%
Refrigeration working medium provided by the invention, its preparation method are above-mentioned various components to be carried out physical mixed by its corresponding mixture ratio get final product under liquid phase state.
Chloro-1,2,2 in the said components, 2-Tetrafluoroethane (HCFC-124), its molecular formula is CHClFCF
3, molar mass is 136.48, and normal boiling point is-11.96 ℃, and critical temperature is 122.28 ℃, and emergent pressure is 3.624MPa.
Trimethylmethane (HC-600a), its molecular formula are CH (CH
3)
2CH
3, molar mass is 58.12, and normal boiling point is-11.61 ℃, and critical temperature is 134.7 ℃, and emergent pressure is 3.64MPa.
1-one chloro-1,1-C2H4F2 C2H4F2 (HCFC-142b), its molecular formula is CH
3CClF
2, molar mass is 100.49, and normal boiling point is-9.0 ℃, and critical temperature is 137.1 ℃, and emergent pressure is 4.12MPa.
The present invention has the following advantages and beneficial effect:
A. environmental performance:
The destruction potential (ODP) of ozonosphere of the present invention is very little, approaches zero, and its Greenhouse effect coefficient (GWP) is also very little, all less than 1000.This shows that the present invention meets the protection ozonosphere fully, reduce the environmental protection requirement of Greenhouse effect.
B. thermal parameter:
Freonll-11-22 refrigeration agent is under handpiece Water Chilling Units standard condition (8.3 ℃ of 7.2 ℃ of vaporization temperatures, 54.4 ℃ of condensing temperatures, 11.1 ℃ of supercooling temperatures and temperature of superheat), and evaporating pressure is that 625.3kPa, condensing pressure are that 2152.3kPa, compression ratio are 3.44, exhaust temperature is 107.8 ℃.And the present invention is when being used for the heat pump of high-temp water source design conditions, evaporating pressure and condensing pressure all with freonll-11-22 close under cooling condition, compression ratio and exhaust temperature are also more lower slightly than freonll-11-22.Illustrated that the present invention can directly charge in the refrigeration system of former freonll-11-22, used as the heat pump of high-temp water source system, and need not change other parts.
C. thermal property
The heat supply COP of the present invention under design conditions is about 4.3, heat supplied is about 120kJ/kg, the volume heat supplied is slightly larger than 4400kJ/m
3, thermal property is better.
In sum, the present invention does not damage the ozone layer substantially, can reduce the Greenhouse effect influence, compliance with environmental protection requirements; And nontoxic, not flammable, thermal property and thermal parameter are all better, can directly utilize freonll-11-22 refrigeration system in the heat pump of high-temp water source heat supply, and the major parts in compressor and the system need not changed, and production line need not transformed.
Embodiment
Embodiment:
Embodiment 1: HCFC-124 with 75% and 25% HCFC-142b carry out physical mixed under liquid phase state.
Embodiment 2: HCFC-124 with 85% and 15% HCFC-142b carry out physical mixed under liquid phase state.
Embodiment 3: HCFC-124 with 95% and 5% HCFC-142b carry out physical mixed under liquid phase state.
Embodiment 4: the HCFC-124 with 75%, 5% HC-600a and 20%HCFC-142b carry out physical mixed under liquid phase state.
Embodiment 5: the HCFC-124 with 85%, 3% HC-600a and 12%HCFC-142b carry out physical mixed under liquid phase state.
Embodiment 6: the HCFC-124 with 95%, 1% HC-600a and 4%HCFC-142b carry out physical mixed under liquid phase state.
Under design conditions, promptly under 5 ℃ of 45 ℃ of vaporization temperatures, 90 ℃ of condensing temperatures, 2 ℃ of supercooling temperatures and the temperature of superheat, the thermal property of the foregoing description refrigeration working medium is listed in the table 1.
Table 1 embodiment thermal property
| Embodiment | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Evaporating pressure kPa | ?659.7 | ?667.8 | ?675.8 | ?693.8 | ?688.2 | ?682.6 |
| Condensing pressure kPa | ?1890.8 | ?1913.1 | ?1935.6 | ?1961.8 | ?1955.5 | ?1949.6 |
| Pressure ratio | ?2.87 | ?2.86 | ?2.86 | ?2.83 | ?2.84 | ?2.86 |
| Exhaust temperature ℃ | ?102.5 | ?101.9 | ?101.3 | ?101.8 | ?101.5 | ?101.2 |
| Heat supply COP | ?4.368 | ?4.335 | ?4.301 | ?4.30 | ?4.294 | ?4.287 |
| Heat supplied (kJ/kg) | ?126.09 | ?120.27 | ?114.51 | ?126.36 | ?120.53 | ?114.63 |
| Volume heat supplied (kJ/m 3 | ?4439.7 | ?4446.3 | ?4449.6 | ?4514.4 | ?4489.3 | ?4463.2 |
| ?ODP | ?0.036 | ?0.034 | ?0.031 | ?0.032 | ?0.031 | ?0.030 |
| ?GWP | ?884 | ?727 | ?559 | ?741 | ?641 | ?530 |
Claims (1)
1. the refrigeration working medium of a heat pump of high-temp water source is characterized in that this refrigeration working medium contains 1-chloro-1,2,2,2-Tetrafluoroethane, 1-chloro-1, and three kinds of materials of 1-C2H4F2 C2H4F2 and Trimethylmethane, its quality percentage composition is respectively:
1-chloro-1,2,2,2-Tetrafluoroethane: 75%-95%
1-chloro-1,1-C2H4F2 C2H4F2: 3%-22%
Trimethylmethane: 1%-5%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011204346A CN1159406C (en) | 2001-07-13 | 2001-07-13 | Refrigerating medium for heat pump of high-temp water source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011204346A CN1159406C (en) | 2001-07-13 | 2001-07-13 | Refrigerating medium for heat pump of high-temp water source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1330121A CN1330121A (en) | 2002-01-09 |
| CN1159406C true CN1159406C (en) | 2004-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011204346A Expired - Fee Related CN1159406C (en) | 2001-07-13 | 2001-07-13 | Refrigerating medium for heat pump of high-temp water source |
Country Status (1)
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|---|---|
| CN (1) | CN1159406C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387674C (en) * | 2005-01-14 | 2008-05-14 | 天津大学 | Mixed substance containing HCFC-142b(chloro-1,1-difluoroethane) for moderate and high temperature heat pump |
-
2001
- 2001-07-13 CN CNB011204346A patent/CN1159406C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1330121A (en) | 2002-01-09 |
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Granted publication date: 20040728 Termination date: 20180713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |