A plate heat exchanger is a new type of efficient heat exchanger composed of a series of metal plates with a certain wavy shape stacked together. It is assembled by placing the plates in an overlapping manner between fixed and movable clamping plates, then secured with clamping bolts.

Plate heat exchanger features:

a.High thermal conductivity due to the alternating arrangement of different corrugated plates, forming complex flow channels, causing the fluid to exhibit a rotating three-dimensional flow within the channels between the corrugated plates, and capable of achieving this at lower Reynolds numbers (usuallyRe=50~200Vortex is generated below, hence the high heat transfer coefficient; it is generally considered shell-and-tube type.3~5Multiple.

b.Large logarithmic mean temperature difference and small end temperature difference; in shell-and-tube heat exchangers, the two fluids flow in the tube side and shell side, respectively, generally in cross flow, with a small logarithmic mean temperature difference correction factor; while plate heat exchangers are mostly in parallel or counter-current flow, and their correction factors are typically also small.0.95Left and right, in addition, the flow of cold and hot fluids in the plate heat exchanger is parallel to the heat exchange surface with no bypass, thus resulting in a smaller temperature difference at the end of the plate heat exchanger, allowing for lower water heat exchange.1°C, while shell-and-tube heat exchangers are generally5℃。

 c.Compact in structure, the small footprint plate heat exchanger offers a high heat transfer area per unit volume, similar to that of a tube-and-shell design.2~5The plate heat exchanger requires less space than the shell-and-tube type, as it does not necessitate a designated area for removing the tube bundle for maintenance. Therefore, for the same heat transfer capacity, the plate heat exchanger occupies approximately one-third of the area of a shell-and-tube heat exchanger.1/5~1/10。