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以现场的压缩空气为实验工质 ,对压缩空气在人字形波纹板式换热器的传热与流阻性能进行实验研究。研究结果表明 ,与传统的光滑管弓形隔板换热器相比 ,板式换热器能非常有效地强化空气侧的膜传热系数。但是板式换热器的膜传热系数是花瓣状翅片管 (PF管 )螺旋隔板换热器的 30 %～ 4 0 % (以胚管外表面积计算 ) ,是低肋管螺旋隔板换热器的 4 0 %～ 50 % ,然而其压力损失却是PF管螺旋隔板换热器的 3～ 5倍 ,是低肋管螺旋隔板换热器的1.7～ 3倍。此外还从传热与流阻性能、传热效率、紧凑性和经济性等方面对板式换热器的整体性能进行了评价。
The field of compressed air as the experimental working fluid, the compressed air in the herringbone corrugated heat exchanger heat transfer and flow resistance of the experimental study. The results show that the plate heat exchanger can effectively enhance the air-side membrane heat transfer coefficient compared to the conventional smooth-tube segmental heat exchanger. However, the membrane heat transfer coefficient of the plate heat exchanger is 30% ~ 40% of the spiral separator heat exchanger of the petal-like finned tube (PF tube) (calculated from the outer surface area of the embryo tube) However, the pressure loss is 3 to 5 times of the pressure loss of the spiral pipe of the PF pipe and 1.7 to 3 times of the heat exchanger of the low-rib spiral pipe. In addition, the overall performance of the plate heat exchanger was also evaluated in terms of heat transfer and flow resistance, heat transfer efficiency, compactness and economy.