The corrugated pattern of the plates of the closed plate heat exchanger
The corrugated patterns of plate heat exchanger plates mainly include "herringbone" and "horizontal straight" corrugations. The pressure-bearing capacity of "herringbone" corrugated plates is higher than 1.0Mpa, the pressure-bearing capacity of "horizontal straight" corrugated plates is generally 1.0Mpa, and the heat transfer coefficient and fluid resistance of "herringbone" corrugated plates are high. For the "horizontal and straight" corrugated plate, the main consideration is the working pressure of the plate heat exchanger, the pressure drop of the fluid and the heat transfer coefficient. If the working pressure is above 1.6Mpa, the "herringbone" corrugated plate should be selected. If the working pressure is not high and the resistance is reduced, the "horizontal straight" corrugated plate can be used. Due to the limitation of installation space, high heat exchange efficiency is required to reduce the floor space of the plate heat exchanger, and the resistance drop is not limited, so the "herringbone" corrugated plate should be selected.
The plate heat exchanger is a new type of heat exchanger made up of a series of corrugated metal sheets. Thin rectangular channels are formed between the plates, and heat exchange is performed through the plates. Plate heat exchangers are ideal equipment for liquid-liquid and liquid-vapor heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, convenient installation and cleaning, wide application, long service life, etc.
