Pressure drop of HFC refrigerants inside evaporator and condenser coils as determined by CFD

S. J. Smith, L. Shao and S. B. Riffat

Applied Energy, 2001, vol. 70, issue 2, 169-178

Abstract: This paper presents pressure-drop data for inside evaporator and condenser coils of refrigeration and air conditioning systems using hydrofluorocarbon (HFC) refrigerants and blends. Computational fluid dynamics (CFD) was used to simulate the two-phase flows of different refrigerants through two types of coil common to the evaporator and condenser components found in a typical vapour-compression system. A comparison of single-phase and two-phase flows is made with respect to pressure drop across the evaporator, firstly at constant temperature for single-phase saturated vapour, and secondly at increasing temperature with varying components such as density and viscosity for two-phase vapour. Pressure losses of HFC refrigerants and blends were compared with data for conventional refrigerants and data provided by other researchers.

Date: 2001
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