CN110194948A - For heat driven heat pump ternary mix working medium in a kind of distributed energy resource system - Google Patents
For heat driven heat pump ternary mix working medium in a kind of distributed energy resource system Download PDFInfo
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- CN110194948A CN110194948A CN201910429900.0A CN201910429900A CN110194948A CN 110194948 A CN110194948 A CN 110194948A CN 201910429900 A CN201910429900 A CN 201910429900A CN 110194948 A CN110194948 A CN 110194948A
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
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Abstract
The invention discloses a kind of low GWP(greenhouse effects potential) value, in high-effect distributed energy resource system for heat driven heat pump ternary mix working medium, by trifluoroiodomethane (CF3I), propane (R290) and propylene (R1270) composition, shared mass percent are as follows: trifluoroiodomethane (CF3I): 90% ~ 96%；Propane (R290)+propylene (R1270): 4% ~ 10%；Wherein the mass percent of propane is 1% ~ 9%, and the mass percent of propylene is 1% ~ 9%.The ODP(ozone layer destroying potential of the mix refrigerant) it is 0, for GWP value less than 20, environmental-protecting performance is excellent, and unit volume heating capacity and coefficient of heat supply are larger, has many advantages, such as thermodynamic efficiency height and energy conservation and environmental protection.
Description
Technical field
The present invention relates to the working medium in steam compression heat pump system in a kind of distributing-supplying-energy system, and in particular to 25-
50 DEG C of low-temperature heat source can provide the ternary environment-friendly and energy-efficient mixed working fluid of the heat pump system of 70-80 DEG C of heat supply temperature.
Background technique
Distributing-supplying-energy system mainly uses clean energy resource, such as natural gas, solar energy, wind energy, geothermal energy, by will be each
The kind energy is coupled, and using the cascade utilization principle of energy, improves the efficiency of energy supply and reduce pollution and discharge.It is distributed
Energy resource system is mainly used in the industrial park of remote samll cities and towns, large-scale Commercial Complex and large size.In recent years, with
The upgrading of China's manufacturing industry, the building of supply chain often focus on large-scale industrial sector garden and incubator base of.Due to correlation
Industry often has similar use energy demand, especially high-grade energy demand, therefore has also pushed distributed energy supply system
The development of system.Distributing-supplying-energy system can provide the variety classes such as electric energy, thermal energy, cold energy, steam and quality for related industry
Energy form, the initial cost and operating cost of each enterprise in industrial park can be substantially reduced.
As the efficiency of supply of the maximum thermal energy of demand in distributing-supplying-energy system, often also to entire distributed energy supply system
The energy utilization rate of system has important influence.It is industrial generally to use absorption-type heat pump heat supply, especially large-scale heat supply system
System is considered as energy conservation and environmental protection since this kind of energy-provision way has biggish heat capacity and utilizes heat-driven.
But absorption heat pump generally requires to go to drive using the steam of higher quality, has on the one hand aggravated coupled thermomechanics problem, another party
Face often also causes efficiency of energy utilization to reduce.Steam compression heat pump energy supplying system is using electrical energy drive, and application is more clever
It is living, while UTILIZATION OF VESIDUAL HEAT IN level can be greatly improved using efficient and environment-friendly type working medium, reduce the complexity of energy supplying system and raising
Energize efficiency.
For steam compression heat pump energy supplying system, the energy conversion efficiency of the thermodynamic property of working medium for heat pump system
Play key effect.In view of general business or resident with heat source temperature at 70-80 DEG C or so, therefore the stagnation temperature of heat pump fluid
Degree cannot be below 90 DEG C, to prevent biggish throttling and heat exchange loss.Existing heat pump fluid such as R134a, R161 etc. and its mixed
Object is closed, often there is that greenhouse effects potential GWP is bigger than normal, phase transformation slip temperature is larger, efficiency is relatively low, especially flammability issues limit
The filling quantity of working medium in systems has been made, has hindered it applied to large-scale compression formula heat pump system.Therefore, it is necessary to develop have compared with
High heating efficiency and seem especially urgent with more environmentally friendly, safe heat pump fluid.
Summary of the invention
The purpose of the present invention is to provide a kind of mixed working fluids, for providing 70-80 DEG C of heat source, this kind of work in heat pump system
Matter has lower GWP, higher coefficient of heat supply, and biggish unit volume heating capacity is suitable for large capacity centrifugal compressor
Pressure ratio and it is lesser compare slip temperature, simultaneously because using common refrigerant as pivot, therefore be that one kind is low and replace
For the heat pump mixed working medium of cost.
The present invention provides in a kind of distributed energy resource system for heat driven heat pump ternary mix working medium, including following quality percentage
The raw material of ratio:
Trifluoroiodomethane CF3I:90% ~ 96%；
Propane R290+ propylene R1270:4% ~ 10%；Wherein the mass percent of propane is 1% ~ 9%, the mass percent of propylene
It is 1% ~ 9%；
Wherein each constituent element mass percent and be 100%；
The ozone layer destroying potential of gained mixed working fluid is 0, and chamber effect potential value is less than 20.
Above-mentioned mixed working fluid, the raw material including following mass percent:
Trifluoroiodomethane CF3I:92%；
Propane R290:2%；
Propylene R1270:6%；
Wherein each constituent element mass percent and be 100%.
Above-mentioned mixed working fluid, preparation method are by CF3I, R290 and R1270 are according to its corresponding quality proportioning in liquid
Physical mixed is carried out under phase state.
The present invention provides in above-mentioned distributed energy resource system for heat driven heat pump ternary mix working medium in large capacity for heat driven heat pump
Application in system.
In above-mentioned application, the large capacity heat supply heat pump system includes 70-80 DEG C of commercialization and the heat pump system for occupying domestic hot water
System；Mixed working fluid used, GWP are lower than 20, coefficient of heat supply COPh4.612 ~ 4.745, unit volume heating capacity is
4300 kJ·m-3~ 4901kJ·m-3, suitable for centrifugal compressor pressure ratio be 3.25 ~ 3.31 and compared to sliding temperature
The case where degree is 1.63 DEG C ~ 3.26 DEG C.
Beneficial effects of the present invention:
(1) environmental performance is excellent, and ozone layer destroying potential ODP value is 0, and greenhouse effects potential GWP is lower than 20；
(2) temperature glide is smaller, and coefficient of heat supply COP value and unit volume heating capacity are higher, can be with reduction system volume；
(3) constituent element is common refrigerant, cheap, is easy to obtain.
Specific embodiment
Refrigerant provided by the invention, preparation method are by CF3I, R290 and R1270 are according to its corresponding quality proportioning
Physical mixed is carried out under liquid phase state.Each constituent element property is listed in table 1.
Several embodiments are listed below to illustrate specific implementation process of the invention, but the present invention be not limited only to it is following several
Kind embodiment, all includes constituent element of the present invention, proportion, and belongs to present invention guarantor with the mix refrigerant screening thinking in the present invention
Protect range.
The embodiment of following 24 proportions is carried out, maximum performance point is sought in calculating:
Embodiment 1:CF3I/R1270/R290 proportion: 90%/1%/9%；
Embodiment 2:CF3I/R1270/R290 proportion: 90%/2%/8%；
Embodiment 3:CF3I/R1270/R290 proportion: 90%/3%/7%；
Embodiment 4:CF3I/R1270/R290 proportion: 90%/4%6%；
Embodiment 5:CF3I/R1270/R290 proportion: 90%/5%/5%；
Embodiment 6:CF3I/R1270/R290 proportion: 90%/6%/4%；
Embodiment 7:CF3I/R1270/R290 proportion: 90%/7%/3%；
Embodiment 8:CF3I/R1270/R290 proportion: 90%/8%/1%；
Embodiment 9:CF3I/R1270/R290 proportion: 90%/9%/1%；
Embodiment 10:CF3I/R1270/R290 proportion: 92%/1%/7%；
Embodiment 11:CF3I/R1270/R290 proportion: 92%/2%/6%；
Embodiment 12:CF3I/R1270/R290 proportion: 92%/3%/5%；
Embodiment 13:CF3I/R1270/R290 proportion: 92%/4%/4%；
Embodiment 14:CF3I/R1270/R290 proportion: 92%/5%/3%；
Embodiment 15:CF3I/R1270/R290 proportion: 92%/6%/2%；
Embodiment 16:CF3I/R1270/R290 proportion: 92%/7%/1%；
Embodiment 17:CF3I/R1270/R290 proportion: 94%/1%/5%；
Embodiment 18:CF3I/R1270/R290 proportion: 94%/2%/4%；
Embodiment 19:CF3I/R1270/R290 proportion: 94%/3%/3%；
Embodiment 20:CF3I/R1270/R290 proportion: 94%/4%/2%；
Embodiment 21:CF3I/R1270/R290 proportion: 94%/5%/1%；
Embodiment 22:CF3I/R1270/R290 proportion: 96%/1%/3%；
Embodiment 23:CF3I/R1270/R290 proportion: 96%/2%/2%；
Embodiment 24:CF3I/R1270/R290 proportion: 96%/3%/1%；
Calculating operating condition: 85 DEG C of condensation temperature, 25 DEG C of evaporating temperature, polytropic exponent 1.09.Cylinder clearance volume and swept volume
Ratio is 0.08, and mechanical efficiency 0.95, motor efficiency 0.78, temperature coefficient 0.9, leakage coefficient are 0.8.It will evaporation
The degree of superheat of device side is taken as 3 DEG C, and the degree of supercooling of condenser side is taken as 5 DEG C.Thermodynamic cycle, which uses, to be had loss, has overheat and supercooling
Theoretical circulation.Environment, safety and the cycle performance of each constituent element are listed in table 1.
1 constituent element property of table and cycle performance
As it can be seen from table 1 evaporating pressurep evIt is above atmospheric pressure, prevents from being let out in air into duplex matter system；Condensation
Pressurep coIt is lower；Corresponding pressure ratio (π =p co / p ev) 3 or so, big flow centrifugal compressor can be used；Unit mass
Refrigerating capacityq hAnd volume refrigerating capacity compressorq hvDifference is obvious, and R1270 has obvious advantage, therefore will be significant containing this constituent element
The heating capacity of mixed working fluid, especially volume heating capacity are improved, area and the investment of heat exchanger are reduced；Coefficient of heat supply COPh, three
Plant the relatively high of working medium；Global warming index GWP is smaller, has significant environmental performance；Three kinds of working medium all have lower
Toxicity, safety be highest level A；Flammable aspect, the grade of CF3I is up to 1 grade, non-combustible；R1270 and R290 are equal
For flammable working medium.
Three kinds of cycle performance parameters circulated under given calculating operating condition are given in table 1, are mixed in selected ternary
Working medium matches lower calculated result and is listed in table 2.
2 ternary mix working medium CF of table3I/PROPANE/PROPYLEN calculated result
From table 2 it can be seen that the evaporating pressure of mixed working fluidp evIt is above atmospheric pressure, prevents from letting out in air into working medium and follow
Loop system；Condensing pressurep coIt is lower；Corresponding pressure ratio (π =p co / p ev) 3.25 ~ 3.31, it can be centrifugal using big flow
Compressor；Unit mass refrigerating capacityq hAnd volume refrigerating capacity compressorq hvIt is higher, it will to significantly improve the heating capacity of mixed working fluid, especially
It is volume heating capacity, reduces area and the investment of heat exchanger；Coefficient of heat supply COPh, three kinds of working medium it is relatively high；Global warming
Index GWP is smaller, has significant environmental performance；Three kinds of working medium all have lower toxicity, and safety is highest level A；
Flammable aspect, CF3The grade of I is up to 1 grade, non-combustible；R1270 and R290 is flammable working medium, therefore and CF3I mixing can
To significantly improve the security performance of working medium.
CF3When the degree of I is 90%:
(1) condensing pressure and unit volume heating capacity are increased, PROPYLEN ratio with the increase of PROPYLEN ratio
It just can satisfy the requirement of condensing pressure when being 0.01, unit volume heating capacity at this time is 4695 kJm-3。
(2) pressure ratio and heating efficiency are basically unchanged, and pressure ratio is in 3.26 or so, COPhIt is maintained at 4.61 ~ 4.62 or so.
CF3When the degree of I is 92%:
(1) condensing pressure and unit volume heating capacity are increased, PROPYLEN ratio with the increase of PROPYLEN ratio
It just can satisfy the requirement of condensing pressure when being 0.01 ~ 0.06, unit volume heating capacity at this time is 4596 ~ 4749 kJm-3。
(2) pressure ratio and heating efficiency are basically unchanged, and pressure ratio is 3.27, COPhIt is maintained at 4.65 ~ 4.66 or so.
CF3When the degree of I is 94%:
(1) condensing pressure and unit volume heating capacity are increased, PROPYLEN ratio with the increase of PROPYLEN ratio
It just can satisfy the requirement of condensing pressure when being 0.01 ~ 0.05, unit volume heating capacity at this time is 4483 ~ 4609 kJm-3。
(2) pressure ratio and heating efficiency are basically unchanged, and pressure ratio is 3.29, COPhIt is maintained at 4.69 ~ 4.7 or so.
CF3When the degree of I is 96%:
(1) condensing pressure and unit volume heating capacity are increased, PROPYLEN ratio with the increase of PROPYLEN ratio
It can satisfy the requirement of condensing pressure when being 0.01 ~ 0.03, unit volume heating capacity at this time is 4351 ~ 4417kJm-3。
(2) pressure ratio and heating efficiency are basically unchanged, and pressure ratio is 3.3, COPhIt is maintained at 4.74 or so.
In conclusion pressure ratio of the pressure ratio of the refrigerant of selection 3.1 ~ 3.3, suitable for large capacity centrifugal compressor
Range, the temperature glide in evaporator and condenser can be considered as Local ocean tide, practical heat transfer process between 2 ~ 3.5
In composition transfer it is little, therefore cycle performance can keep stable.Unit volume heating capacity is in 4600 ~ 4900 kJ/m-3,
Coefficient of heat supply is between 4.6 ~ 4.7, better economy.Optimal proportion are as follows: trifluoroiodomethane (CF3I): 92%, propane
(R290): 2%, propylene (R1270): 6%, performance parameter is shown in Table 2 embodiments 11.
Claims (7)
1. for heat driven heat pump ternary mix working medium in a kind of distributed energy resource system, it is characterised in that: including following mass percent
Raw material:
Trifluoroiodomethane CF3I:90% ~ 96%；
Propane R290+ propylene R1270:4% ~ 10%；Wherein the mass percent of propane is 1% ~ 9%, the mass percent of propylene
It is 1% ~ 9%；
Wherein each constituent element mass percent and be 100%；
The ozone layer destroying potential of gained mixed working fluid is 0, and chamber effect potential value is less than 20.
2. for heat driven heat pump ternary mix working medium in distributed energy resource system according to claim 1, it is characterised in that: including
The raw material of following mass percent:
Trifluoroiodomethane CF3I:92%；
Propane R290:2%；
Propylene R1270:6%；
Wherein each constituent element mass percent and be 100%.
3. for the preparation method of heat driven heat pump ternary mix working medium in a kind of distributed energy resource system of any of claims 1 or 2,
It is characterized in that: by CF3I, R290 and R1270 carries out physical mixed according to its corresponding quality proportioning under liquid phase state.
4. for heat driven heat pump ternary mix working medium in large capacity heat supply in a kind of distributed energy resource system of any of claims 1 or 2
Application in heat pump system.
5. application according to claim 4, it is characterised in that: the large capacity heat supply heat pump system includes 70-80 DEG C of quotient
With with the heat pump system that occupies domestic hot water.
6. application according to claim 4, it is characterised in that: mixed working fluid used, GWP are lower than 20, coefficient of heat supply
COPh4.612 ~ 4.745, unit volume heating capacity is 4300 kJm-3~ 4901kJ·m-3。
7. application according to claim 4, it is characterised in that: suitable for centrifugal compressor pressure ratio be 3.25 ~
3.31, compare the case where slip temperature is 1.63 DEG C ~ 3.26 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752360A (en) * | 2022-04-13 | 2022-07-15 | 华中科技大学 | Energy-saving environment-friendly working medium for heat pump boiler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111230A (en) * | 1995-10-13 | 1997-04-28 | Matsushita Electric Ind Co Ltd | Mixed working fluid containing trifluoroiodomethane and refrigeration cycle apparatus using the fluid |
| US20090127497A1 (en) * | 2007-11-16 | 2009-05-21 | Spatz Mark W | Hydrofluorocarbon/trifluoroiodomethane/ hydrocarbons refrigerant compositions |
| CN101824305A (en) * | 2010-04-06 | 2010-09-08 | 中国科学院理化技术研究所 | Mixed refrigerant containing trifluoroiodomethane |
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- 2019-05-22 CN CN201910429900.0A patent/CN110194948B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111230A (en) * | 1995-10-13 | 1997-04-28 | Matsushita Electric Ind Co Ltd | Mixed working fluid containing trifluoroiodomethane and refrigeration cycle apparatus using the fluid |
| US20090127497A1 (en) * | 2007-11-16 | 2009-05-21 | Spatz Mark W | Hydrofluorocarbon/trifluoroiodomethane/ hydrocarbons refrigerant compositions |
| CN101824305A (en) * | 2010-04-06 | 2010-09-08 | 中国科学院理化技术研究所 | Mixed refrigerant containing trifluoroiodomethane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752360A (en) * | 2022-04-13 | 2022-07-15 | 华中科技大学 | Energy-saving environment-friendly working medium for heat pump boiler |
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Address after: 030032 No. 8, Xinhua Road, Tanghuai Industrial Park, transformation and comprehensive reform demonstration zone, Taiyuan, Shanxi Province Patentee after: Shanxi Installation Group Co.,Ltd. Patentee after: Taiyuan University of Technology Address before: 030032 No.8 Xinhua Road, comprehensive reform demonstration area, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI INDUSTRIAL EQUIPMENT INSTALLATION GROUP Co.,Ltd. Patentee before: Taiyuan University of Technology |