Economic performance and plate type selection of plate heat exchanger

- Nov 27, 2018-

The plate heat exchanger has a high heat transfer coefficient during the operation, and the special corrugation design on the heat transfer plate can make the fluid generate strong turbulence at a very low flow rate to a certain extent, and the self-cleaning effect of the turbulent flow can be Preventing the generation of dirt, the heat transfer coefficient of the plate heat exchanger is 3-5 times that of the shell-and-tube heat exchanger.


The economic performance of the plate heat exchanger is compared with the shell-and-tube type in the operation under the premise of the same heat exchange amount: low investment, low operating cost and low maintenance cost. Adjustability: Simply increase and decrease the plate to meet the process change requirements. Compact structure: Under the premise of the same heat exchange capacity, the occupied space is only 1/2 to 1/3 of the shell-and-tube type.

Plate heat exchanger plate type selection


The plate type or corrugated type of the plate heat exchanger shall be determined according to the actual needs of the heat exchange occasion. For the case where the flow rate is large and the pressure drop is small, the plate type with low resistance should be selected, and the plate type with large resistance should be selected. Depending on the fluid pressure and temperature, it is determined whether the detachable or brazed type is selected. When determining the plate type, it is not suitable to select the plate with too small a single plate area, so as to avoid too many plates, the flow velocity between the plates is too small, and the heat transfer coefficient is too low. This problem should be paid more attention to the larger heat exchanger.