What are the cold storage defrosting method?

1 is suitable for hot gas defrosting of small systems, systems and control method is simple, fast defrost, uniform and safe, should further expand the application range.

2 ultrasonic defrost is evidently energy-saving defrosting method, should be further studied the layout of ultrasonic generator, increase the degree of defrost completely, so that the engineering application.

3 pneumatic defrosting is particularly suited to need frequent defrosting refrigeration system, although the need to increase the special air supply and air handling equipment, as long as the higher utilization efficiency will be very good.

4 liquid refrigerant defrosting, refrigeration and defrosting process simultaneously, no additional energy consumption during defrosting, frost cold quantity used in supercooled liquid refrigerant before expansion valve, improve the efficiency of refrigeration makes library can get basic to keep warm, liquid refrigerant temperature in normal temperature range, evaporator temperature rise during the defrosting, the deterioration of heat transfer of evaporator.

The disadvantage is the complex control system trival.