Experimental Study of Plate Freezer with the Ejector

Abstract

This paper introduced a kind of fluid supply system on ejector throttling. Comparing with the fluid supply system of thermodynamic expansion valve, this paper studied two kinds of fluid supply system on the freezing time, overall energy consumption and uniformity temperature distribute. The results showed that, in this working condition, the fluid supply system of ejector is 14% shorter than the thermodynamic expansion valve in freezing time, which reducing the power consumption by shortening the working time of compressor, condenser and other equipment. Meanwhile, Ejector can act like isentropy and recycle some expansion work, which could increase the refrigerant capacity of evaporator to save about 6.3% power consumption compared with the isoenthalpy throttling of thermodynamic expansion valve. The system can reducing 10°C temperature difference by avoiding two-phase flow fluid supply of the evaporator and reduce the flow resistance of refrigerant in evaporator. Thus, the quality of the product is improved.