Research of the refrigeration system of atmospheric bridge type water steam jet vacuum and engineering application

摘要

The steam jet vacuum refrigerant device works through the water three state physical change processes, and translates potential energy of low-pressure and low-grade steam into kinetic energy as power source, makes low temperature water above 0°C by water as refrigerant and coolant. The design principle of the device follows the first, the second law of thermodynamics and flow continuous law of hydromechanics, the device adopts installation method of air bridge type, waste heat of steam pressure during 0.05-0.3MPa is source of power, the system adopt 3 effect instead of traditional 2 effect in order to achieve the purpose of energy saving operation, COP value of the refrigerating system is greater than 0.8, refrigerating output of single sets is more than 6000kw. The device is consists of evaporator, the main ejector, the main condenser, auxiliary ejector, auxiliary condenser, water jet and gas-distributing cylinder. And application directions of the type device are studied.