The funke plate heat exchanger is a heat transfer heat exchanger with a partition wall. The cold fluid transfers heat through the heat exchanger plates, and the fluid is in direct contact with the plates. The heat transfer methods are heat conduction and convection heat transfer. The key to improving the heat transfer efficiency of the plate heat exchanger is to improve the heat transfer coefficient and logarithmic average temperature difference.

(1) Improve the surface heat transfer coefficient of the plate
Since the corrugation of the plate heat exchanger can make the fluid generate turbulent flow at a small flow rate, a higher surface heat transfer coefficient can be obtained. The surface heat transfer coefficient is related to the geometric structure of the plate corrugation and the flow state of the medium. The waveform of the plate includes herringbone, straight, spherical and so on. After years of research and experiments, it has been found that the herringbone plate with a triangular corrugated cross-section has a higher surface heat transfer coefficient, and the larger the included angle of the corrugation, the higher the flow velocity of the medium in the flow channel between the plates, and the larger the surface heat transfer coefficient. 
(2) Reduce the thermal resistance of the dirt layer
The key to reducing the thermal resistance of the fouling layer of the heat exchanger is to prevent the plate structure. When the thickness of the plate structure is 1mm, the heat transfer coefficient is reduced by about 10%. Therefore, attention must be paid to monitoring the water quality of the hot and cold ends of the heat exchanger to prevent the structure of the plate and prevent debris in the water from adhering to the plate. Some heating units add chemicals to the heating medium in order to prevent water theft and corrosion of steel parts. Therefore, it is necessary to pay attention to the water quality and viscous chemicals that cause debris to contaminate the heat exchanger plates. If there is sticky debris in the water, it should be treated with a special filter. When choosing a medicament, it is advisable to choose a non-sticky medicament.
Choose plates with high thermal conductivity.