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Medium-high temperature heat pump mixed refrigerants containing hydrocarbon trifluoro-iodomethane

A technology of trifluoroiodomethane and hydrocarbons, which is applied in the field of refrigeration refrigerants, can solve the problems of inability to provide heat energy, and achieve the effects of excellent environmental characteristics and excellent cycle performance

Inactive Publication Date: 2013-02-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most widely used air conditioning-heat pump systems use HCFC22 or its substitute R407C as the working medium, which can provide hot water with a maximum temperature of 50-55°C, but cannot provide heat energy at a higher temperature level.

Method used

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  • Medium-high temperature heat pump mixed refrigerants containing hydrocarbon trifluoro-iodomethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: take 20 mass %R600 and 80 mass %R245fa, used as a refrigerant after physical mixing at room temperature.

Embodiment 2

[0022] Embodiment 2: take 55 mass %R600 and 45 mass %R245fa, used as a refrigerant after physical mixing at room temperature.

Embodiment 3

[0023] Embodiment 3: get 75 mass %R600 and 25 mass %R245fa, used as a refrigerant after physical mixing at room temperature.

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PUM

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Abstract

The invention discloses a group of medium-high temperature heat pump mixed refrigerants containing hydrocarbon trifluoro-iodomethane, which are suitable to be used as refrigerating fluid of a low temperature Rankine cycle system of which the evaporation temperature is 60 DEG C to 100 DEG C. The mixed refrigerants are binary or ternary mixtures comprising R600 (butane), R245fa (1,1,1,3,3-perfluoropropane), R13I1 (trifluoro-iodomethane) and R152a (difluoroethane) according to different mass ratios. The preparation method comprises the step of physically mixing the components according to regulated ratios at the normal temperature to obtain the corresponding mixed refrigerants. The mixed refrigerants do not damage ozone layers, are low in greenhouse effect, and accord with environment protection requirements; and thermal parameters are proper and cycling performance is excellent. The mixed refrigerants can be filled in an HFC134a air conditioner compressor, and are free from a compressor. COP (coefficient of performance) is around 4 under a designed working condition, and unit mass output net work is over 150KJ / kg.

Description

[0001] The present invention is a divisional application titled "Mid-High Temperature Heat Pump Mixed Working Fluid Containing Hydrocarbons", the filing date is July 9, 2010, and the application number is 2010102228654. technical field [0002] The invention belongs to a refrigerant in a heat pump or an air-conditioning system, and in particular relates to a refrigerant in a medium-high temperature heat pump system with a condensation temperature of 60-100°C. Background technique [0003] For the mitigation of energy consumption that exists in large quantities in production and life and requires relatively low thermal energy grades (temperature is 60-100°C), the use of heat pump heating technology not only has a higher total energy utilization efficiency than conventional energy supply methods, Reducing CO2 emissions can also effectively utilize industrial waste heat, geothermal energy, solar energy, and low-grade heat energy contained in the environment (air, soil, surface w...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 王怀信张圣君郭涛陈清莹
Owner TIANJIN UNIV