The hot zone is formed by cutting a double spiral slot which reduces the cross sectional area through which current flows, resulting in higher resistance than the cold end.
发热部是双螺旋切槽，在电流通过时可以减少其横截面积，因而发热部的阻值比冷端部的阻值大。
2
A calculation method is presented for heat transfer and flow resistance of a spiral plate heat exchanger for the gas-liquid.
提出了螺旋板式换热器用于气-液热交换时的流动阻力以及传热设计的计算方法。
3
On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.