Advantages & Disadvantages of Plate Heat Exchangers
Heat Exchanger Effectivenessinside of a countercurrent, double-pipe heat exchanger at 300K and is heated by an oil stream that enters at 385K at a rate of 3.2kg/s. The heat capacity of the oil is 1.89 kJ/kg K, and the average heat capacity of water over the temperature range of interest is 4.192 kJ/kg K. The overall heat-transfer coefficient of the exchanger is
The shell and tube heat exchanger in the photo above has about twelve times the efficiency than a hypothetical single-tube heat exchanger of the same size. However, there is a disadvantage to smaller tubes if the fluid in your application is very viscous or has particulates, it can foul up the tube and undermine the heat transfer process.
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Convective heat transfer from the outer tube wall to the outside fluid. Heat exchangers are typically classified according to flow arrangement and type of construction. The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube (or double-pipe) construction.
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