Because the wave of plate heat exchanger can make the fluid turbulent at a small flow rate, it can obtain a higher surface heat transfer coefficient, the surface heat transfer coefficient is related to the geometric structure of the wave and the flow state of the medium. The waveform of the plate includes herringbone, flat, spherical, etc. After years of research and experiments, it is found that the triangular shape of the corrugated section of the herringbone plate has a higher surface heat transfer coefficient, and the larger the included Angle of the ripple, the higher the velocity of the medium in the inter-plate flow channel, the greater the surface heat transfer coefficient.

The key to reduce the fouling resistance of the heat exchanger is to prevent the fouling of the plate. When the scale thickness of the plate is 1mm, the heat transfer coefficient decreases by about 10%. Therefore, it is necessary to pay attention to the monitoring of the water quality on both sides of the heat exchanger, to prevent the fouling of the plate, and to prevent debris in the water to adhere to the plate. Some heating units to prevent water theft and steel corrosion, plate heat exchanger in the heating medium to add agents, so we must pay attention to water quality and adhesive caused debris fouling heat exchanger plate. If there are sticky sundries in the water, a special filter should be used for treatment. When choosing medicament, should choose the medicament without stickiness.