Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator

A technology for vapor compression and refrigeration equipment, which is applied in the fields of heat exchange materials, chemical instruments and methods, and can solve problems such as patent reports that have not yet been found.

Inactive Publication Date: 2006-06-21
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator
  • Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator
  • Multi-element mixed working substance adapted to double temperature preparation of single-unit vapor compression type refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The ambient temperature is 25°C, the temperature of the low-temperature compartment of the dual-temperature refrigerator is -60°C to -50°C, and the temperature of the high-temperature compartment is -25°C to -15°C, and the cooling capacity of the low-temperature compartment and the high-temperature compartment are the same. Mixed working fluid; its refrigeration cycle is shown in Figure 201. The mass concentration and performance of the mixed working fluid are shown in Table 1, where w represents the compression work consumed per unit mass of the mixed working fluid, and q indicates that the unit mass of the mixed working fluid is between high and low temperature compartments Cooling capacity provided:

[0034] project

Embodiment 2

[0036]The ambient temperature is 25°C, the temperature of the low-temperature compartment of the dual-temperature refrigerator is -50°C to -40°C, and the temperature of the high-temperature compartment is -25°C to -15°C. The cooling capacity of the low-temperature compartment and the high-temperature compartment are the same. Mixed working fluid; its refrigeration cycle is shown in Figure 202. The mass concentration and performance of the mixed working fluid are shown in Table 2, where w represents the compression work consumed per unit mass of the mixed working fluid, and q indicates that the unit mass of the mixed working fluid is a high and low temperature compartment The amount of cooling provided.

[0037] project

Embodiment 3

[0039] The ambient temperature is 25°C, the temperature of the low-temperature compartment of the dual-temperature refrigerator is -60°C to -50°C, and the temperature of the high-temperature compartment is -15°C to -5°C. The cooling capacity of the low-temperature compartment and the high-temperature compartment are the same. Mixed working fluid; its refrigeration cycle is shown in Figure 203. The mass concentration and performance of the mixed working fluid are shown in Table 3, where w represents the compression work consumed per unit mass of the mixed working fluid, and q indicates that the unit mass of the mixed working fluid is between high and low temperature compartments The amount of cooling provided.

[0040] project

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Abstract

The invention relates the multicomponent mixed working substance used for preparing dual-temperature by single-machine vapor compression refrigerator. The low temperature is between -60- -40Deg.C and the high temperature is between -25- 10Deg.C. The multicomponent mixed working substance comprises lower boiling working substance and high boiling working substance. The lower boiling working substance comprises tetrafluoromethane, ethylene, ethane, fluoroethylene, trifluoromethane, fluoromethane, hydrofluoeic ether, carbon dioxide, difluoromethane and penfluoroethane; the high boiling working substance comprises trifluoro-thane, hydrofluoeic ether, propylene, propane, perfluoropropylamine, propadiene, cyclopropane, difluo-monochloromethane, penta-monochloroethane, perfluoroethane, difluoroethane, isobutene, butane, butylenes, isobutylene, sevofluoropropane, hexafluoropropane, penfluoropropane and tetrachloromonofluoroethane.

Description

technical field [0001] The invention belongs to the technical field of refrigeration machinery, and relates to a multi-component mixed working medium suitable for producing dual-temperature in a single-compressor vapor compression refrigeration device. Background technique [0002] The difference in food freezing or refrigerating temperature has an important impact on its freshness and preservation time, and different foods have different requirements for freezing or refrigerating temperature in order to maintain the above indicators, which requires that the design of the vapor compression refrigeration system must be Prepare different evaporation temperatures to meet the requirements of food preservation. In addition, there are many aspects (such as the separation and liquefaction of mixtures, etc.) and processes that require different temperature environments, which require vapor compression refrigeration systems to obtain different evaporation temp...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 晏刚任挪颖颜俊解国珍厉彦忠吴业正
Owner XI AN JIAOTONG UNIV
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