CN101173162A - Ternary mix working medium for middle/high-temperature heat pump - Google Patents
Ternary mix working medium for middle/high-temperature heat pump Download PDFInfo
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- CN101173162A CN101173162A CNA2006101490677A CN200610149067A CN101173162A CN 101173162 A CN101173162 A CN 101173162A CN A2006101490677 A CNA2006101490677 A CN A2006101490677A CN 200610149067 A CN200610149067 A CN 200610149067A CN 101173162 A CN101173162 A CN 101173162A
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Abstract
The invention discloses a ternary refrigerant mixture for high temperature heat pumps, comprising hydrogen containing chlofluorocarbon (HCFC)-22, HFC-152a, and HFC-245fa, which is characterized in that the components are physically mixed according to designated proportions under normal temperature. In addition, optimal designs for the system of medium-high temperature heat pumps are capable of being carried out through HCFC-22 air conditioning processors, and the invention is allowed to be directly filled in the prior HCFC-22 air conditioning units, thereby the HCFC-22 air conditioning units are transformed into medium-high temperature heat pumps units with new refrigerants. The invention is suitable for medium-high temperature heat pumps systems with condensing temperature between 70 and 100 DEG C. The invention has the advantages of nearly no damage to the ozone layer, low green house effects, environment protection, excellent thermal parameters and cycling performance.
Description
Technical field
The invention belongs to the refrigeration agent in heat pump or refrigeration, the air-conditioning system, especially being suitable as condensing temperature is the refrigeration working medium of 70～100 ℃ 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 65-100 ℃) 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 reduction Greenhouse effect, can also effectively utilize the low-grade energy that contains in industrial exhaust heat, Geothermal energy, sun power and the environment (air, soil, surface water or the layer underground water of diving), reduce the thermal pollution that the waste heat discharging causes, current, the direction of high temperature in the heat pump techniques forward (condensing temperature is 80-100 ℃), high temperature (condensing temperature is higher than 100 ℃) develops, and as for one of key of its development, is exactly to lack the cycle fluid that is fit to.The material that in the past once was used as the working medium of high temperature heat pump system has CFC11, CFC113, CFC114 etc., their ozone layer destroying gesture (ODP) and global warming potential (GWP) are all very big, developed country forbids in 1996 that developing country also will be in forbidding in 2010.What application was more at present is the air-conditioning-heat pump of working medium with HCFC-22 or its surrogate R407C, R410A etc., the hot water top temperature that can provide is 50-55 ℃, and (high more not only cycle performance worsens, also will cause the accident because of the pressure of breaking through system and the warm upper limit of row), 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.
Summary of the invention
The purpose of this invention is to provide one group of ternary mix working medium that is suitable for the moderate and high temperature heat unit, make its environmental characteristics and cycle performance all good.Be particularly useful for condensing temperature and be 70-100 ℃ moderate and high temperature heat system, also can be used as centrifugal refrigerating, air conditioning unit working medium.
Content introduction of the present invention and embodiment: one group of ternary mix working medium that is used for moderate and high temperature heat, described ternary mix working medium is made up of HCFC-22/HFC-152a/HFC-245fa, and mass percent is: 5-40/15-30/30-80%.Each constituent element material mass percentage ratio sum of mixing medium is 100%.The basic parameter of each constituent element material is as shown in table 1.
Preparation method of the present invention is that each constituent element material is carried out physical mixed at normal temperatures by its specified quality proportioning.
The present invention has following some beneficial effect:
(1) compliance with environmental protection requirements: ODP approaches zero, and GWP is also very low.(2) thermal parameter is suitable: under the moderate and high temperature heat design conditions, and very close under the standard air conditioning condition of stress level and HCFC-22, the warm row's temperature limit that is lower than the HCFC-22 compressor of row.Therefore, can adopt the compressor of air conditioner of HCFC-22 in the moderate and high temperature heat system, 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 is greater than 5, and the unit volume heating capacity is substantially at 4200kJ/m
3More than.It is close with the HCFC-22 air-conditioning system that interchanger meets, and it is air conditioning unit working medium of the present invention directly can be poured into existing HCFC-22, is translated into the moderate and high temperature heat unit of new working medium, and 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
Embodiment
Each constituent element component of mixing medium all refers to mass percent in following examples.
Embodiment: get 20%HCFC-22,24%HFC-152a, 56%HFC-245fa, mix the back at normal temperatures as refrigeration agent.
The average operating mode of heat pump is taken as: average vaporization temperature is 45 ℃, and average condensing temperature is 85 ℃, and suction superheat is 5 ℃, condensate depression is 5 ℃, it is 0.85 that compression process is decided entropic efficiency, and according to cycle calculations, above-mentioned three embodiment have related parameter and cycle performance index as shown in table 2.
Table 2 embodiment cycle performance
| Parameter is in performance | Embodiment |
| Evaporating pressure MPa | 0.6 |
| Condensing pressure MPa | 1.9 |
| Pressure ratio | 3.17 |
| Exhaust temperature ℃ | 101.0 |
| COP | 5.40 |
| Heat supplied kJ/kg | 174.8 |
| Unit volume heating capacity kJ/m 3 | 4353 |
| ODP | 0.007 |
| GWP | 905.6 |
Claims (1)
1. the ternary mix working medium that is used for moderate and high temperature heat, it is characterized in that described mixing medium is made up of HCFC-22, HFC-152a and HFC-245fa, mass percent is: 5-40/15-30/30-80%, each constituent element material mass percentage ratio sum of mixing medium is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101490677A CN101173162A (en) | 2005-12-09 | 2005-12-09 | Ternary mix working medium for middle/high-temperature heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101490677A CN101173162A (en) | 2005-12-09 | 2005-12-09 | Ternary mix working medium for middle/high-temperature heat pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101222594A Division CN1313559C (en) | 2005-12-09 | 2005-12-09 | Ternary mixed working medium for intermediate-high-temperature heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101173162A true CN101173162A (en) | 2008-05-07 |
Family
ID=39421921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101490677A Pending CN101173162A (en) | 2005-12-09 | 2005-12-09 | Ternary mix working medium for middle/high-temperature heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101173162A (en) |
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2005
- 2005-12-09 CN CNA2006101490677A patent/CN101173162A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080507 |