Murphy heat spiral plate heat exchanger:

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There are many kinds of sealed gasket structures in Murphy spiral plate heat exchanger equipment, including rectangle, trapezoid, hexagon, pentagon and so on. The commonly used forms also include two types: one, the upper part of the gasket cross section is pointed; The other form, the top of which is flat.
Spiral plate heat exchanger equipment in a form, is through to the middle of the size difference to increase the deformation of the sealing gasket, the structural design is actually still a plane seal, and nonlinear seal, because the bottom of the plate seal groove is a plane, when the plate seal groove bottom plane defects, this structure can offset some. The purpose of the second design, in fact, is to reduce the amount of compression seal gasket, its compression form is also flat compression.
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 As for the sealing gasket of the spiral plate heat exchanger equipment, and the gasket section corresponding to the sealing groove, the assembly is simpler and the bearing capacity of the plate is improved. Generally, the compression ratio of gasket and its original thickness is taken as the design basis of gasket. Based on years of design experience and the analysis of a large number of plate heat exchanger seal structure at home and abroad, murphy team believes that the compression ratio of 20% ~ 25% is ideal.
The improvement of surface heat transfer coefficient of spiral plate heat exchanger on the plate:
Because the ripple of spiral plate heat exchanger equipment can make the fluid produce turbulence at a small flow rate (when Reynolds number is 1, 50), a higher surface heat transfer coefficient can be obtained. The surface heat transfer coefficient is related to the geometric structure of the plate ripple and the flow state of the medium.
The waveforms of spiral plate heat exchanger include herringbone, straight and spherical. After many years of research and experiments, it is found that the triangular shaped herringbone plate has a higher surface heat transfer coefficient, and the larger the included Angle of the ripple, the higher the flow velocity of the medium in the interplate passage, and the larger the surface heat transfer coefficient.

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