Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-vapor heat exchange. It is a new type of high-efficiency heat exchanger formed by stacking some metal sheets with a certain corrugated shape. The plate heat exchanger is made up of many stamped corrugated thin plates at a certain interval, sealed by gaskets and laminated and compacted by a frame and a compression screw. What are the problems in the application of plate heat exchangers?
(1) The matching problem of heat exchange and pressure reduction
The heat transfer coefficient of the plate heat exchanger is directly proportional to the flow velocity of the fluid in the channel. The faster the fluid velocity in the channel, the greater the heat transfer coefficient. When the flow rate becomes faster, the resistance of the fluid will increase continuously, which will increase a loss of fluid pressure.
(2) The research of plate heat exchanger is not perfect
Plate heat exchangers started late in our country and the discussion time is short, which limits the development of the heating system, which in turn has an impact on the energy-saving design of the heating system.
(3) The application of heat exchanger is restricted
There are many defects in the design of the heating system. The application of energy-saving design in heating systems is limited, mainly because the plate heat exchanger is difficult to operate in a high temperature and high pressure environment. Because the main components in the equipment are thin metal sheets, their ability to withstand pressure is limited.