APPLICATION STUDY ON THE REFRIGERANT R404A IN THE FOOD REFRIGERATION SYSTEM

摘要

Nowadays, the traditional refrigerant R22 has being changed to new refrigerant R404A refrigerant in our medium-mini type food refrigeration system to meet the environmental protection request. But R404A ,a new type refrigerant, has some characteristics which are different from those of refrigerant R22.So the basic physical property of the non-azeotropic refrigerant. R404A has been introduced. And the cyclic performance of R404A and R22 are compared both in theoretic and experimental aspects. Some new conclusions are given about both the advantages and disadvantages of the refrigerant R404A, which could be more helpful to R404A application.