Discontinuous S-fin type heat exchange plate and PCHE core body

Abstract

The invention provides a discontinuous S-fin type heat exchange plate which is provided with a fluid inlet uniform distribution area, a fluid outlet contraction area and a discontinuous S-fin type area, the side edge of the heat exchange plate is of a sawtooth-like structure, and the discontinuous S-fin type area comprises a forward fin and a reverse fin which are the same in structure and different in arrangement position. According to the discontinuous S-fin type heat exchange plate, the fluid inlet and outlet flow channel form, the sawtooth-like structure and the forward and reverse S-shaped fin design are adopted, the convection heat exchange area of the heat exchange plate is increased, meanwhile, the flow distribution nonuniformity and the flow separation phenomenon of fluid are reduced, and the pressure loss of the fluid in the flow heat exchange process is reduced.

Description

technical field [0001] The invention relates to the field of high-efficiency heat exchange of compact heat exchangers, in particular to a discontinuous S-fin heat exchange plate and a PCHE core. Background technique [0002] As a new type of plate heat exchanger, the printed circuit board heat exchanger (PCHE) has the advantages of high compactness, high structural strength, good heat exchange efficiency and long-term stable and reliable operation under high temperature, high pressure and other harsh working conditions. Advantages, based on the aforementioned advantages, this type of printed circuit board heat exchanger is applicable in the fields of ultra-high temperature air-cooled stack coolers, solid oxide fuel cells, concentrated solar molten salt heat storage, hydrogen energy, and coal-fired thermal power generation. [0003] The common thickness of PCHE heat exchange plates is about 1.5-2.0mm. Advanced photochemical etching is used to etch out the required flow channe...

AI Technical Summary

Problems solved by technology

In order to improve the heat exchange capacity of the heat exchanger, it is necessary to try to increase the disturbance of the fluid in the flow channel and increase the convective heat exchange area. However, when increasing the heat exchange capacity by increasing the compactness, it will inevitably bring about a large pressure loss.

Images