Mal-Distribution Phenomena Induced by Multiple Solutions in Parallel Channels Heat Exchangers

Abstract

In this work a parallel boiling channel arrangement with an upstream compressible volume is modeled and analyzed. First, flow excursions in a single boiling channel are presented in order to understand the flow excursions in the parallel channels system. Stable and unstable solutions are identified and discussed with the help of the plot of pressure drop versus mass flux, first for two parallel identical channels equally heated, and then extended to a more general case.