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Mixed substance containing HFE-143(CH2FOCHF2) for moderate and high temperature heat pump

A technology of CH2FOCHF2 and mixed working fluid, which is applied in the field of refrigeration working medium, can solve the problems of cycle performance deterioration and inability to provide heat energy, etc., and achieve the effect of ensuring hardware matching

Inactive Publication Date: 2005-08-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the air conditioner-heat pump system that is widely used mainly uses HCFC22 or its substitutes R407C, R410A, etc., and the maximum temperature of hot water that the system can provide is 50-55°C (no matter how high it is, it will not only deteriorate the cycle performance, but also cause Breaking through the upper limit of pressure and exhaust temperature of the system and causing accidents), unable to provide heat energy at a higher temperature level

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: get 26.2 mass %HFE-143 and 73.8 mass %HFC-236ea, used as a refrigerant after physical mixing at room temperature.

Embodiment 2

[0027] Embodiment 2: get 14.7 mass %HFE-143, 55.8 mass % HFC-236ea and 29.5 mass %HFC-245ca, used as a refrigerant after physical mixing at room temperature.

Embodiment 3

[0028] Embodiment 3: get 42.7 mass %HFE-143 and 57.3 mass %HFC-245fa, used as a refrigerant after physical mixing at room temperature.

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PUM

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Abstract

The mixed work medium containing HFE-143(CH2FOCHF2) for high and medium temperature heat pump is suitable for use as the refrigerant of high and medium temperature heat pump system of condensation temperature of 60-140 deg.c. The mixed work medium is binary or ternary mixture of seven kinds of components, including HFE-143, HFC-143, HFC-236ea, HFC-236fa, HFC-245ca, HFC-245fa and HFC-254cb, in certain mass proportion; and various components are mixed physically at normal temperature. The present invention has no damage on ozone layer, low greenhouse effect potential, proper thermal parameters and excellent circulation performance, and may be used in both optimally designed HCFC22 air conditioner compressor and available HCFC22 air conditioner compressor to convert the air conditioner compressor into high and medium temperature heat pump set with the new work medium.

Description

technical field [0001] The invention belongs to the refrigerant in heat pump or refrigeration and air-conditioning systems, and is especially suitable as a refrigerant in medium-high temperature heat pump systems with a condensing temperature of 60-140°C. Background technique [0002] At the expense of consuming a part of high-grade energy (such as electric energy), heat pump technology converts low-grade heat energy that cannot be directly used (heat energy contained in air, soil, surface water or shallow groundwater, as well as geothermal energy, solar energy, and industrial energy) through a thermal cycle. The grade of waste heat, etc.) is raised to the level that can be used; the energy efficiency ratio (or performance coefficient--COP) of the system is generally higher than 3. In order to meet the requirements of the industrial sector for higher heating temperatures, heat pump technology is developing towards medium-high temperature (conden...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 王怀信马利敏
Owner TIANJIN UNIV