CN101597484A - Contain HFE-143 (CH 2FOCHF 2) mixed working fluid for organic rankine cycle - Google Patents
Contain HFE-143 (CH 2FOCHF 2) mixed working fluid for organic rankine cycle Download PDFInfo
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- CN101597484A CN101597484A CNA2009100695372A CN200910069537A CN101597484A CN 101597484 A CN101597484 A CN 101597484A CN A2009100695372 A CNA2009100695372 A CN A2009100695372A CN 200910069537 A CN200910069537 A CN 200910069537A CN 101597484 A CN101597484 A CN 101597484A
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Abstract
Contain HFE-143 (CH
2FOCHF
2) mixed working fluid for organic rankine cycle, being suitable as vaporization temperature is the refrigeration agent of 60-100 ℃ low temperature organic rankine cycle system.This group mixing medium is by HFE-143; HFC-143; HFC-236ea; HFC-236fa; HFC-245ca; HFC-245fa and HFC-254cb be totally 7 kinds of binary or tertiary mixtures that materials are formed by different mass ratios.Its preparation method is, above-mentioned various constituent elements are carried out physical mixed at normal temperatures by specified proportioning, obtains corresponding mixing medium.Working medium of the present invention does not damage the ozone layer, and global warming potential is lower, compliance with environmental protection requirements; Thermal parameter is suitable, and cycle performance is good.Rankine cycle efficient under design conditions is 9.2%, and unit mass output net work is substantially more than 23kJ/kg.
Description
Technical field
The invention belongs to the refrigeration agent in heat pump or the air-conditioning system, being specifically related to as vaporization temperature is working medium in 60-100 ℃ the low temperature organic rankine cycle system.
Background technology
The research of low temperature resource (as cryogenically heat energy, used heat or sun power) generation technology is for reducing fossil energy consumption and CO
2, SO
2, NO
xThe discharging of isothermal chamber gas and environmental pollutant realizes that Sustainable development is significant.And one of major technique factor that the generating of restriction low temperature resource utilizes is exactly a system economy.In the practice of warm resource generation technology show, based on the generation technology better economy of organic Rankine circulation.
In recent years, continuing to increase of the challenge that brings along with the energy and environment problem, and the lifting of the generating economy brought of technical progress, the utilization that always is considered to not possess the low temperature resource (particularly 70-120 ℃ of temperature range) of generating economy begins to obtain to pay close attention to.Why the low temperature resource generates electricity is utilized economy relatively poor, and its one of the main reasons is exactly to lack the cycle fluid that is fit to.As low temperature organic Rankine round-robin working medium C is arranged at present
5F
12, HC600 etc., or they are because of global warming potential (GWP) is very big, or because of inflammable and explosive, apply and limited it.Therefore develop a kind of environmental friendliness, the good novel working medium of thermal performance, most important to the development of low temperature organic Rankine circulating technology.
Summary of the invention
The objective of the invention is, provide a kind of low temperature organic Rankine round-robin that is applicable to contain the mixing medium of HFE-143, can be used as vaporization temperature and be 60-100 ℃ low-temperature geothermal resource, or the working medium in the organic rankine cycle system of other low-grade (as used heat, sun power etc.) thermal source.
The present invention proposes contains HFE-143 (CH
2FOCHF
2) mixed working fluid for organic rankine cycle comprised 7 kinds of constituent element materials altogether, specifically: HFE-143 (CH
2FOCHF
2), HFC-143 (1,1, the 2-Halothane), HFC-236ea (1,1,1,2,3, the 3-HFC-236fa), HFC-236fa (1,1,1,3,3,3 ,-HFC-236fa), HFC-245ca (1,1,2,2, the 3-pentafluoropropane), HFC-245fa (1,1,1,3, the 3-pentafluoropropane) and HFC-254cb (1,1,2, the 2-tetrafluoropropane).The basic parameter of each constituent element material is as shown in table 1.
The mixed working fluid for organic rankine cycle that contains HFE-143 that the present invention proposes specifically consists of: be made up of HFE-143 and HFC-236ea; Or form by HFE-143, HFC-236ea and HFC-245ca; Or form by HFE-143 and HFC-245fa; Or form by HFE-143, HFC-236ea and HFC-245fa; Or form by HFE-143, HFC-236ea and HFC-254cb; Or form by HFE-143, HFC-236ea and HFC-143; Or form by HFE-143 and HFC-245ca; Or form by HFE-143, HFC-236fa and HFC-245ca; Or form by HFE-143 and HFC-236fa; Or form by HFE-143, HFC-236fa and HFC-245fa; Or form by HFE-143, HFC-236fa and HFC-254cb; Or form by HFE-143, HFC-236fa and HFC-143; Or form by HFE-143, HFC-245fa and HFC-245ca; Or form by HFE-143, HFC-245fa and HFC-254cb; Or form by HFE-143, HFC-245fa and HFC-143.
The concrete proportioning (mass percent) of above-mentioned its each constituent element of mixing medium is:
HFE-143/HFC-236ea 3-98/2-97，
HFE143/HFC236ea/HFC245ca 3-97/2-96/1-95％，
HFE-143/HFC-245fa 4-99/1-96％，
HFE143/HFC236ea/HFC245fa 4-98/1-95/1-95％，
HFE143/HFC236ea/HFC254cb 2-93/3-94/4-95％，
HFE143/HFC236ea/HFC143 3-95/4-96/1-93％，
HFE-143/HFC-245ca 3-98/2-97％，
HFE143/HFC236fa/HFC245ca 3-97/1-95/2-96％，
HFE-143/HFC-236fa 2-98/2-98，
HFE143/HFC236fa/HFC245fa 2-97/2-97/1-96％，
HFE143/HFC236fa/HFC254cb 1-97/1-97/2-98％，
HFE143/HFC236fa/HFC143 3-91/4-92/5-93％，
HFE143/HFC245fa/HFC245ca 2-96/1-95/3-97％，
HFE143/HFC245fa/HFC254cb 4-92/3-91/5-93％，
HFE143/HFC245fa/HFC143 2-94/4-96/2-94％。
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 its specified quality proportioning get final product.
The present invention has the following advantages and beneficial effect:
(1) environmental performance: ODP of the present invention equals zero, and environmental characteristics is good.(2) thermal parameter: low temperature organic rankine cycle system design conditions (as the evaporating pressure under 0 ℃ of 90 ℃ of vaporization temperatures, 35 ℃ of condensing temperatures, 5 ℃ of superheating temperature or the weary gas superheating temperature about 1000.0kPa, condensing pressure about 220.0kPa, ratio of expansion is about 4.80.(3) cycle performance: the present invention is about 9.2% in the Rankine cycle efficient under the above-mentioned design conditions, (be in the steam turbine isentropic efficiency 75% condition under) more than the 23kJ/kg, cycle performance is good substantially for unit mass output net work.
The basic parameter of contained constituent element in the table 1 low temperature mixed working fluid for organic rankine cycle
T
b: normal boiling point, T
c: critical temperature, P
c: emergent pressure
Embodiment
Embodiment 1: get 26.2
Mass%HFE-143 and 73.8
Mass%HFC-236ea carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 2: get 15
Mass%HFE-143,56
Mass%HFC-236ea and 29
Mass%HFC-245ca carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 3: get 42.7
Mass%HFE-143 and 57.3
Mass%HFC-245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 4: get 31
Mass%HFE-143,59
Mass%HFC-236ea and 10
Mass%HFC-245fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 5: get 22.6
Mass%HFE-143,68.7
Mass%HFC-236ea and 8.7
Mass%HFC-254cb carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 6: get 19.9
Mass%HFE-143,66.7
Mass%HFC-236ea and 13.4
Mass%HFC-143 carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 7: get 37.9
Mass%HFE-143 and 62.1
Mass%HFC-245ca carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 8: get 15
Mass%HFE-143,56
Mass%HFC-236fa and 29
Mass%HFC-245ca carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 9: get 49.7
Mass%HFE-143 and 50.3
Mass%HFC-236fa carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 10: get 32
Mass%HFE-143,42
Mass%HFC-236fa and 26
MassCarry out under the %HFC-245fa, normal temperature after the physical mixed as refrigeration agent.
Embodiment 11: get 37.1
Mass%HFE-143,43.8
Mass%HFC-236fa and 19.1
Mass%HFC-254cb carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 12: get 34.0
Mass%HFE-143,51.7
Mass%HFC-236fa and 14.3
Mass%HFC-143 carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 13: get 15.7
Mass%HFE-143,63.2
Mass%HFC-245fa and 21.1
Mass%HFC-245ca carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 14: get 16.1
Mass%HFE-143,70.0
Mass%HFC-245fa and 13.9
Mass%HFC-254cb carries out after the physical mixed at normal temperatures as refrigeration agent.
Embodiment 15: get 35
Mass%HFE-143,16
Mass%HFC-245fa and 49
Mass%HFC-143 carries out after the physical mixed at normal temperatures as refrigeration agent.
With the circulation of low temperature underground heat organic Rankine is example, low temperature underground heat organic rankine cycle system design conditions are taken as: average vaporization temperature is 90 ℃, average condensing temperature is 35 ℃, the evaporation superheating temperature be 5 ℃ (to some working medium, enter two-phase region for guaranteeing to avoid expanding ending, getting weary gas superheating temperature is 0 ℃, the evaporation superheating temperature of inverse is 6-10 ℃ with this understanding), expansion process decides entropic efficiency and working medium pump efficient is 75%, according to cycle calculations, above-mentioned 15 embodiment have related parameter and cycle performance index as shown in table 2.
Table 2 embodiment of the invention performance
| Parameter and performance | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 |
| Evaporating pressure MPa | 0.6622 | 1.0578 | 0.9411 | 1.0028 | 1.0353 | 1.0641 |
| Condensing pressure MPa | 0.1327 | 0.2399 | 0.2070 | 0.2220 | 0.2344 | 0.2409 |
| Steam turbine import specific volume m 3/kg | 0.03373 | 0.01717 | 0.02241 | 0.01973 | 0.01990 | 0.01990 |
| Ratio of expansion | 5.02 | 4.74 | 4.73 | 4.78 | 4.67 | 4.65 |
| Unit mass output net work kJ/kg | 26.9 | 21.0 | 24.4 | 23.0 | 23.6 | 24.2 |
| Cycle efficiency | 9.700 | 9.014 | 9.197 | 9.179 | 9.182 | 9.260 |
| Vaporization temperature slippage ℃ | 0.10 | 6.42 | 7.64 | 5.69 | 6.63 | 6.34 |
| Condensing temperature slippage ℃ | 0.18 | 8.68 | 10.25 | 7.81 | 9.26 | 8.73 |
| Parameter and performance | Embodiment 13 | Embodiment 14 | Embodiment 15 |
| Evaporating pressure MPa | 0.8599 | 0.9672 | 0.9493 |
| Condensing pressure MPa | 0.1812 | 0.2113 | 0.2098 |
| Steam turbine import specific volume m 3/kg | 0.02335 | 0.02081 | 0.02838 |
| Ratio of expansion | 4.94 | 4.83 | 4.57 |
| Unit mass output net work kJ/kg | 23.9 | 23.6 | 30.4 |
| Cycle efficiency | 9.436 | 9.352 | 9.676 |
| Vaporization temperature slippage ℃ | 1.55 | 1.79 | 3.10 |
| Condensing temperature slippage ℃ | 1.86 | 2.65 | 4.39 |
Claims (2)
1. contain HFE-143 (CH
2FOCHF
2) mixed working fluid for organic rankine cycle, it is characterized in that (CH by HFE-143
2FOCHF
2) and HFC-236ea (1,1,1,2,3, the 3-HFC-236fa) composition; Or by HFE-143, HFC-236ea and HFC-245ca (1,1,2,2, the 3-pentafluoropropane) composition; Or by HFE-143 and HFC-245fa (1,1,1,3, the 3-pentafluoropropane) composition; Or form by HFE-143, HFC-236ea and HFC-245fa; Or by HFE-143, HFC-236ea and HFC-254cb (1,1,2, the 2-tetrafluoropropane) composition; Or by HFE-143, HFC-236ea and HFC-143 (1,1, the 2-Halothane) composition; Or form by HFE-143 and HFC-245ca; Or by HFE-143, HFC-236fa (1,1,1,3,3,3 ,-HFC-236fa) and HFC-245ca composition; Or form by HFE-143 and HFC-236fa; Or form by HFE-143, HFC-236fa and HFC-245fa; Or form by HFE-143, HFC-236fa and HFC-254cb; Or form by HFE-143, HFC-236fa and HFC-143; Or form by HFE-143, HFC-245fa and HFC-245ca; Or form by HFE-143, HFC-245fa and HFC-254cb; Or form by HFE-143, HFC-245fa and HFC-143.
2. according to the described HFE-143 (CH that contains of claim 1
2FOCHF
2) mixed working fluid for organic rankine cycle, it is characterized in that the concrete proportioning (mass percent) of above-mentioned each constituent element material is:
HFE-143/HFC-236ea 3-98/2-97，
HFE 143/HFC236ea/HFC245ca 3-97/2-96/1-95％，
HFE-143/HFC-245fa 4-99/1-96％，
HFE143/HFC236ea/HFC245fa 4-98/1-95/1-95％，
HFE143/HFC236ea/HFC254cb 2-93/3-94/4-95％，
HFE143/HFC236ea/HFC143 3-95/4-96/1-93％，
HFE-143/HFC-245ca 3-98/2-97％，
HFE143/HFC236fa/HFC245ca 3-97/1-95/2-96％，
HFE-143/HFC-236fa 2-98/2-98，
HFE143/HFC236fa/HFC245fa 2-97/2-97/1-96％，
HFE143/HFC236fa/HFC254cb 1-97/1-97/2-98％，
HFE143/HFC236fa/HFC143 3-91/4-92/5-93％，
HFE143/HFC245fa/HFC245ca 2-96/1-95/3-97％，
HFE143/HFC245fa/HFC254cb 4-92/3-91/5-93％，
HFE143/HFC245fa/HFC143 2-94/4-96/2-94％。
More than each constituent element material mass percentage ratio sum of every kind of mixing medium be 100%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670566A (en) * | 2016-02-29 | 2016-06-15 | 哈尔滨工程大学 | Waste heat recovery Rankine cycle refrigerant mixture 1,1,1,3,3-perfluoropropane and 1,1,1-trifluoroethane and waste heat recovery method |
| CN110845995A (en) * | 2019-10-16 | 2020-02-28 | 珠海格力电器股份有限公司 | Environment-friendly mixed working medium, composition and heat exchange system |
-
2009
- 2009-07-02 CN CNA2009100695372A patent/CN101597484A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670566A (en) * | 2016-02-29 | 2016-06-15 | 哈尔滨工程大学 | Waste heat recovery Rankine cycle refrigerant mixture 1,1,1,3,3-perfluoropropane and 1,1,1-trifluoroethane and waste heat recovery method |
| CN110845995A (en) * | 2019-10-16 | 2020-02-28 | 珠海格力电器股份有限公司 | Environment-friendly mixed working medium, composition and heat exchange system |
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Open date: 20091209 |