Abstract
AbstractMean Temperature Difference and Efficiency of Multipass Shell‐and‐Tube Heat Exchangers with and without Segmental Baffles. Branched flow in a multi‐passes shell‐and‐tube heat exchanger with segmental baffles causes a reduction in the mean temperature difference and the thermal efficiency of the apparatus compared with a pure counter‐flow. The influence of the shell‐side flow induced by the segmental baffles on the thermal performance of the heat exchanger is mostly ignored. Making certain assumptions (e.g. constant overall heat transfer coefficient) theoretical relations of the thermal performance of the exchanger can be derived from the energy balance and the kinetic equation. If these assumptions are not valid, a numerical integration of the differential equations is necessary. Ignoring the influence of the shell‐side flow induced by the baffles is only possible under certain conditions. If these conditions are not fulfilled, the cell‐method can be used.
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