CN102766438A

CN102766438A - Mixed refrigerant containing trifluoroiodomethane

Info

Publication number: CN102766438A
Application number: CN2012102507238A
Authority: CN
Inventors: 吴剑峰; 公茂琼; 董学强
Original assignee: Technical Institute of Physics and Chemistry of CAS
Current assignee: Technical Institute of Physics and Chemistry of CAS
Priority date: 2010-04-06
Filing date: 2010-04-06
Publication date: 2012-11-07
Anticipated expiration: 2030-04-06
Also published as: CN102766438B

Abstract

The invention relates to a mixed refrigerant containing trifluoroiodomethane, which is formed by physically mixing a component 1, a component 2 and a component 3, wherein the component 1 is trifluoroiodomethane having the function of inhibiting combustion and explosion, the component 2 is 1,1,2,2,-tetrafluoroethane, and the component 3 is propylene; and in the mixed refrigerant, the content of the component 1 is 1-10 wt%, the content of the component 2 is 20-40 wt%, and the content of the component 3 is 50-75 wt%. The ODP (ozone depletion potential) value of the mixed refrigerant is zero, the GWP (global warming potential) value is much smaller than that of a conventional HFC (hydrofluorocarbon) working medium, and the mixed refrigerant has favorable lubricating oil intersolubility; and thus, the mixed refrigerant can directly substitute an R22 working medium without great changes in the refrigeration system. Since the mixed refrigerant has the combustion inhibiting component, the refrigerant has greatly lower flammability and is even non-flammable, so that the safety of the refrigeration system is greatly enhanced.

Description

A kind of mix refrigerant that contains CF3I

Technical field

The invention belongs to refrigerant art, particularly a kind of mix refrigerant that contains CF3I.

Background technology

R22 (HCFC22, CHF ₂Cl) be a kind of refrigeration agent of widespread use in air-conditioning system, have extraordinary thermal property, and have higher efficient.But along with the discovery of depletion of the ozone layer mechanism and Greenhouse effect problem, R22 is put into the ranks of progressively eliminating owing to having ODP (ozone depletion dive value) value and higher GWP (Global warming dive value) value.

The alternative working medium of R22 mainly contains two types now: one type is natural medium, and like hydrocarbons (HCs), ODP is zero, and GWP is very low, but itself has very strong combustibility; One type is synthetic hydrogen fluorohydrocarbon (HFCs), and like R134a etc., ODP is zero, and flammable section H FCs has fire retardation not as HCs, but GWP is higher, and has the lubricating oil solubility problem.Be difficult to search out complete satisfactory R22 alternative refrigerant in the pure working medium, in this case, mix refrigerant becomes the research focus of R22 surrogate.

Using the alternative working medium of mixing more widely at present is R410A and R407C, and the ODP value of the two is zero, satisfied the protection requirement to ozonosphere, but the GWP value is but very high.Aspect refrigerating efficiency (COP), the two is 0.9～1.0 times of R22 when not doing optimization of matching.At alternative aspect of performance, the WP of the two all is higher than R22, and wherein the condensing pressure of R410A is higher about 57% than R22, is not suitable in the system that uses R22, directly filling.

Summary of the invention

The objective of the invention is to propose a kind of mix refrigerant that contains CF3I according to the basic demand of R22 alternative refrigerant and the screening principle of mix refrigerant, this mix refrigerant has safety, environmental protection and lubricating oil and has advantages such as good mutual solubility.

Technical scheme of the present invention is following:

The mix refrigerant that contains CF3I provided by the invention, it is made up of following component 1, component 2 and component 3 through physical mixed:

Said component 1 is for having the CF3I (R13I1) of combustion and explosion suppression effect;

Said component 2 is 1,1,1,2-Tetrafluoroethane (R134a);

Said component 3 is propylene (R1270);

In said mix refrigerant, said component 1 content is 1-10wt%, and said component 2 content are 20-40wt%, and said component 3 content are 50-75wt%;

In said mix refrigerant, can also comprise 1 in the said component 2, the 1-C2H4F2 C2H4F2;

In said mix refrigerant, can also comprise dme in the said component 2.

The mix refrigerant that contains CF3I provided by the invention is a kind of mix refrigerant of safety and environmental protection, and it has following plurality of advantages: the ODP value is zero, and life-time service can not damage ozonosphere; CF3I, propane, propylene, dme and 1, the GWP value of 1-C2H4F2 C2H4F2 is all very low, so the GWP of mix refrigerant that the present invention contains CF3I is much smaller than R22 and present widely used R410A and R407C; WP and R22 are suitable, need not existing refrigeration system is done big change; Also, can reduce the combustibility of refrigeration agent, make the security of refrigeration system be improved because the mix refrigerant that contains CF3I of the present invention contains flame-retardant composition.

Embodiment:

Embodiment 1:

Get CF3I, 1,1,1,2-Tetrafluoroethane and propane carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 1wt%, 1; 1,1,2-Tetrafluoroethane concentration is 40wt%, and propane concentration is 59wt%.

Embodiment 2:

Get CF3I, 1,1,2,2-Tetrafluoroethane and propylene carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 1wt%, 1; 1,2,2-Tetrafluoroethane concentration is 24wt%, and density of propylene is 75wt%.

Embodiment 3:

Get CF3I, 1,1,2,2-Tetrafluoroethane and propane carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 10wt%, 1; 1,2,2-Tetrafluoroethane concentration is 20wt%, and propane concentration is 70wt%.

Embodiment 4:

Get CF3I, 1,1,1,2-Tetrafluoroethane and propylene carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 10wt%, 1; 1,1,2-Tetrafluoroethane concentration is 15wt%, and density of propylene is 75wt%.

Embodiment 5:

Get CF3I, 1,1,1,2-Tetrafluoroethane, 1; 1-C2H4F2 C2H4F2 and propane carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection, and in this mix refrigerant, CF3I concentration is 10wt%; 1,1,1,2-Tetrafluoroethane concentration is 30wt%; 1,1-C2H4F2 C2H4F2 concentration is 10wt%, and propane concentration is 50wt%.

Embodiment 6:

Get CF3I, 1,1,2,2-Tetrafluoroethane, dme and propylene carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 10wt%, 1; 1,1,2-Tetrafluoroethane concentration is 15wt%; 1,1-C2H4F2 C2H4F2 concentration is 5wt%, and density of propylene is 70wt%.

Embodiment 7:

Get CF3I, 1,1,2,2-Tetrafluoroethane, propane and propylene carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 5wt%; 1,1,2; 2-Tetrafluoroethane concentration is 25wt%, and propane concentration is 50wt%, and density of propylene is 20wt%.

Embodiment 8:

Get CF3I, 1,1,2,2-Tetrafluoroethane, 1; 1-C2H4F2 C2H4F2, propane and propylene carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection, and in this mix refrigerant, CF3I concentration is 5wt%; 1,1,2,2-Tetrafluoroethane concentration is 10wt%; 1,1-C2H4F2 C2H4F2 concentration is 30wt%, and propane concentration is 30wt%, and density of propylene is 25wt%.

Embodiment 9:

Get CF3I, 1,1,2,2-Tetrafluoroethane, dme, 1; 1-C2H4F2 C2H4F2, propane and propylene carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection, and in this mix refrigerant, CF3I concentration is 5wt%; 1,1,2,2-Tetrafluoroethane concentration is that 15wt%, dme concentration are 10wt%; 1,1-C2H4F2 C2H4F2 concentration is 15wt%, and propane concentration is 30wt%, and density of propylene is 25wt%.

Embodiment 10:

Get CF3I, 1,1,1,2-Tetrafluoroethane and propane carry out physical mixed at normal temperatures; Obtain a kind of mix refrigerant of safety and environmental protection, in this mix refrigerant, CF3I concentration is 5wt%, 1; 1,1,2-Tetrafluoroethane concentration is 25wt%, and propane concentration is 70wt%.

Embodiment 11:

Get CF3I, 1,1,2,2-Tetrafluoroethane and propane carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection; In this mix refrigerant, CF3I concentration is 7wt%, 1,1,2, and 2-Tetrafluoroethane concentration is 23wt%, propane concentration is 70wt%.

Embodiment 12:

Get CF3I, 1,1,2,2-Tetrafluoroethane, dme and propane carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection; In this mix refrigerant, CF3I concentration is 9wt%, 1,1,2,2-Tetrafluoroethane concentration is 10wt%,, dme concentration is 21wt%, propane concentration is 60wt%.

Embodiment 13:

Get CF3I, 1,1,1,2-Tetrafluoroethane and propylene carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection; In this mix refrigerant, CF3I concentration is 9wt%, 1,1,1, and 2-Tetrafluoroethane concentration is 30wt%, density of propylene is 61wt%.

Embodiment 14:

Get CF3I, 1,1,1, the 2-Tetrafluoroethane, 1,1-C2H4F2 C2H4F2 and propane carry out physical mixed at normal temperatures, obtain a kind of mix refrigerant of safety and environmental protection; In this mix refrigerant, CF3I concentration is 5wt%, 1,1,1, and 2-Tetrafluoroethane concentration is 5wt%, 1,1-C2H4F2 C2H4F2 concentration is 30wt%, propane concentration is 60wt%.

Design conditions at refrigerator are taken as 7.2 ℃ of vaporization temperatures; 54.4 ℃ of condensing temperatures, 8.3 ℃ of condensate depression, 11.1 ℃ of superheating temperature; Compressor isentropic efficiency 0.75; Calculate according to cycle performance, during the performance comparison of the foregoing description and existing refrigeration agent was listed in the table below, wherein refrigerating duty and relative COP all were to be the correlative value of benchmark with R22 relatively.

The embodiment performance computation reaches and has the refrigerant performance comparative result now

^*The data of R407C and R410A are drawn from " refrigeration agent service manual, Cao Desheng, Shi Lin write, Beijing, metallurgical industry press, 2003 ".

Know by above; The most embodiment that contain the mix refrigerant of CF3I provided by the invention have the condensing pressure suitable with R22, evaporating pressure, volume refrigerating capacity compressor and efficient; And pressure ratio and exhaust temperature all have reduction largely with respect to R22, R407C and R410A, and this helps the normal operation of compressor.

The mix refrigerant that contains CF3I provided by the invention has good environmental protection characteristic; Following table has provided the latent value ODP of ozone depletion of 3 embodiment and existing refrigeration agent and the comparison of the latent value GWP of Global warming; Can find out mix refrigerant that the present invention proposes not only the ODP value be zero, and the GWP value significantly reduces.

Claims

1. mix refrigerant that contains CF3I, it is made up of following component 1, component 2 and component 3 through physical mixed:

Said component 1 is for having the CF3I of combustion and explosion suppression effect;

Said component 2 is 1,1,2, the 2-Tetrafluoroethane;

Said component 3 is a propylene;

In said mix refrigerant, said component 1 content is 1-10wt%, and said component 2 content are 20-40wt%, and said component 3 content are 50-75wt%.