In order to ensure that efficient plate heat exchanger can be purchased, it is necessary to master certain methods when selecting.
Techniques of lectotype calculation
Plate type or corrugated type should be based on the actual needs of heat exchange occasions. In the case of large flow rate and small allowable pressure drop, the plate with small resistance should be selected, and the plate with large resistance should be selected on the contrary. According to the fluid pressure and temperature, determine the choice of removable or brazed type. When determining the plate type, it is not appropriate to choose the plate with too small area, so as not to have too many plates, small flow rate between plates and too low heat transfer coefficient. For larger heat exchangers, attention should be paid to this problem.
Process and channel selection
The flow refers to a set of parallel flow channels in the same flow direction of a medium in the plate heat exchanger, and the flow channel refers to the medium flow channel composed of two adjacent plates in the plate heat exchanger. In general, several flow channels are connected in parallel or series to form different combinations of cold and hot medium channels.
