Thursday, June 21, 2007
Plate heat exchanger - Remove some plates...will the pressure drop across the exchanger increase or decrease ?
In a Plate heat exchangers, there are number of plates for the 'hot' fluid and given number of plates for the 'cold' fluid. The cold fluid flows through the cold layers in a parallel type arrangement, same for the hot fluid. The hot fluid layers are typically laid counter-current to the cold layers. By removing plates, you will effectively be reducing the free flow area. This will increase the velocity, which is proportional to the square root of the pressure drop, it is anticipated an increase in pressure drop.
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