Comparison of Two-Phase Pressure Drop Models for Condensing Flows in Horizontal Tubes

Abstract

An important parameter in the hydraulic design of refrigeration and air-conditioning systems is the two-phase flow pressure drop. In this paper, the authors compare the numerical results obtained by using seven two-phase pressure-drop models with the experimental results found in the scientific literature, for the condensation of R600a and R717 (Ammonia = NH3) in horizontal tubes. Different mass flow rates and different conditions have been considered in order to see which correlation is applicable under specific operation conditions.

Analysis of Fully Developed Laminar Flow between Parallel Plates with UHF Using ANSYS CFD

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