Plated-Tube Heat Exchanger: Analytical Investigation of a New Surface Concept

Abstract

Typical cryogenic refrigeration cycles require heat exchangers of very high efficiency and limited pressure drop. To satisfy these requirements such exchangers must have relatively large heat transfer surfaces and short flow passages. Under those circumstances the axial heat conduction through the exchanger core in the flow direction becomes significant and can cause substantial performance reductions, or conversely, require larger heat transfer surfaces. At the same time, considerable flow uniformity is required to maintain high effectiveness [⁶].