Article
Article
Countercurrent transfer operations
Article By:
Lockhart, Frank J. Department of Chemical Engineering, University of Southern California, Los Angeles, California.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.165200
Industrial processes in chemical engineering or laboratory operations in which heat or mass or both are transferred from one fluid to another, with the fluids moving continuously in very nearly steady state or constant manner and in opposite directions through the unit. Other geometrical arrangements for transfer operations are the parallel or concurrent flow, where the two fluids enter at the same end of the apparatus and flow in the same direction to the other end, and the cross-flow apparatus, where the two fluids flow at right angles to each other through the apparatus. These two arrangements are ordinarily not as efficient as countercurrent flow, but do find certain applications in industry and the laboratory.
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