Experimental Study on Cooling Performance of Phase Change Vest
To alleviate the heat stress caused by workers in hot summer environments,this article designs a phase change cooling vest.By simulating four different operating conditions in the environmental compartment(at a relative humidity of 65%,the temperature are 25,30,33 and 36 degrees celsius respectively),the cooling performance of the cooling vest was studied.The results show that as the operating temperature increases,the temperature difference at the same measuring point gradually increases before and after wearing a cooling vest with or without phase change materials;Due to the influence of body running posture,the cooling effect on the back is better than that on the front;The maximum average temper-ature difference between the front chest experiment group and the empty group at the same measuring point is 2.85℃,and the maximum average temperature difference between the back chest experiment group and the empty group at the same measuring point is 6.7℃;At 36℃,the cooling time of the front chest phase change material is about half that of the back;Overall,the cooling vest has a certain cooling effect and a longer action time.
万方数据
维普
