A plate heat exchanger is a novel and efficient heat exchanger made up of a series of metal plates with a certain wavy shape. It consists of plates stacked between fixed and movable clamping plates, then secured together with clamping bolts.

Plate heat exchanger features:

a.High thermal conductivity due to the alternating arrangement of different corrugated plates, forming complex flow channels. This causes the fluid to exhibit a rotating three-dimensional flow within the channels between the corrugated plates, achievable at lower Reynolds numbers (usuallyRe=50~200The turbulent flow is generated under the shell and tube, thus having a high heat transfer coefficient; it is generally considered to be of the shell-and-tube type.3~5Multiple.

b.Large logarithmic mean temperature difference, small end temperature difference; in shell-and-tube heat exchangers, the two fluids flow separately in the tube side and shell side, generally in cross flow, with a small logarithmic mean temperature difference correction factor; whereas plate heat exchangers are mostly in parallel or counter-current flow, and their correction factors are usually in0.95On the one hand, in addition, the flow of cold and hot fluids in plate heat exchangers is parallel to the heat transfer surface without bypass, thus ensuring a smaller temperature difference at the end of the plate heat exchanger, allowing for lower water heat exchange.1°F, while shell-and-tube heat exchangers are typically5℃。

 c.Compact plate-type heat exchangers feature a compact structure, offering a high heat transfer area per unit volume, similar to tubular-shell design.2~5Times, and unlike shell-and-tube heat exchangers, they do not require a space reserved for extracting the tube bundles for maintenance. Therefore, to achieve the same heat transfer capacity, the footprint of a plate heat exchanger is approximately one-tenth of that of a shell-and-tube heat exchanger.1/5~1/10。