Effect of heat transfer plate on heat transfer and heat transfer area of plate heat exchanger

The cross section shape of the heat transfer plate along the flow direction of the fluid is continuously changed, which greatly enhances the disturbance of the flow, and thus the turbulence can be formed at a very low Reynolds number, thereby enhancing the heat transfer performance of the fluid. Usually, the same kind of fluid heat exchanger tube when the Reynolds number is 4 in 000~6 000, in order to achieve a turbulent state, and in the welded plate heat exchanger gasket when the Reynolds number is 100~300, can achieve a turbulent state.

Plate structure design of welded plate heat exchanger is reasonable, the heat transfer and flow resistance characteristics of reasonable matching, so the high efficiency of heat transfer and pressure reduction, better overall performance, elimination of shell and tube heat exchanger and plate heat exchanger in the dead zone. By adopting the plate bundle form of peripheral group welding, the sealing gasket is canceled, so the heat resistance and the pressure resistance performance are better than that of the detachable plate heat exchanger. At the same time, the board is modular structure, according to different process requirements to change the flow form and the size of the flow area.

With the rapid development of China industrialization, rise, promotion and fuel ethanol, coal gas technology, we believe that in the petroleum crude oil, petroleum chemical industry, natural gas processing and belongs to the twenty-first Century bio pharmaceutical industry and other fields, welded plate heat exchanger will be more widely used, has a broad market.