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Article | REF: BE9565 V1

Direct contact heat exchangers

Authors: Alain BRICARD, Lounès TADRIST

Publication date: October 10, 1999, Review date: February 3, 2015

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1. Basic concept

1.1 What is a direct-contact heat exchanger?

This is an exchanger with no physical separating wall between two fluids flowing in co-current or counter-current (figure 1 ). The absence of a wall is an intrinsic characteristic of the heat exchanger, or is sought to improve certain specific qualities of the exchanger. The interface between the two fluids can take two forms:

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