A group of mixed working media containing HFCs for high temperature heat pump

Abstract

A group of mixed working media being used suitably as refrigerant of heat pump system with condensing temperature of 100-140 deg.C, contains six component materials of HFC 134a, HFC 152a, R1311, HFC 143, HFC 236 fa and HFC 245 fa. The six compound materials can be formed to be binary and ternary mixture according to different mass ratio and its preparing process is to carry out physical mixing of abovesaid component materials as per appointed ratio at ordinary temp to forming relevant mixed working media.

Description

technical field [0001] The invention belongs to refrigerants in heat pumps or refrigeration and air-conditioning systems, and particularly relates to refrigerants in high-temperature heat pump systems with a condensing temperature of 100-140°C. Background technique [0002] For the energy-consuming links that exist in large numbers in production and life and require relatively low thermal energy grades (temperature is 60-160°C), the use of heat pump heating technology not only has a higher total energy utilization efficiency than conventional energy supply methods, but also reduces CO 2 emissions (thereby reducing the greenhouse effect), and can also effectively utilize industrial waste heat, geothermal energy, solar energy, and low-grade heat energy contained in the environment (air, soil, surface water or shallow groundwater) to reduce heat pollution caused by waste heat discharge. At present, heat pump technology is developing towards medium-h...

AI Technical Summary

Problems solved by technology

At present, the most widely used air-conditioning-heat pump systems use HCFC22 or its substitutes R407C, R410A, etc. as working fluids. The upper limit of pressure and exhaust temperature is easy to cause accidents), and cannot provide heat energy at a higher temperature level