Experimental study of electricity defrosting and hot gas defrosting was done based on a low-temperature cold storage existing. The design of partition device was introduced. The effect of humidifying amount on defrosting time

defrosting load

temperature field around the air-cooler when defrosting were discussed at two kinds of situation with partition device or no. The results show that

with the increasing amount of humidification

defrosting energy consumed also increases accordingly

more than 18% when the humidifying capacity is 1000 g. Electricity defrosting was bigger to the damage degree of cold storage temperature field. The cold storage temperature is increased by 5℃ to 10℃. After the partition device was set up

there was a notable energy conservation effect

the temperature field of cold storage was less destroyed. The maximum change of cold storage temperature is decreased by 5℃ with electricity defrosting. The influence of the partition device to hot gas defrosting was relatively smaller.