Improved thermohydraulic numerical model of a heat exchanger for air-to-refrigerant systems

Euiguk Jung, Byoungha Ahn, DeukGwan Choi and Joonhong Boo

Energy, 2015, vol. 90, issue P1, 369-376

Abstract: This paper reports on a numerical model derived to predict the transient thermohydraulic behavior of the air and refrigerant in a heat exchanger for refrigerant systems. The purpose of this study is to improve the numerical model of the fin-and-tube heat exchanger for air conditioners. The equations of mass, energy, and momentum were completely separated for vapor and liquid in a two-phase thermal fluid flow. The model was validated by analyzing experimental data based on the temperature and pressure of the refrigerant. The numerical results of superheating, temperature, and pressure distributions in each zone in the fin-and-tube structure were estimated using the input variables. The maximum errors in temperature difference and pressure were within 5 °C and 4%, respectively.

Keywords: Numerical simulation; Refrigerant system; Fin-and-tube compact heat exchanger; Thermal performance; Two-phase flow (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:90:y:2015:i:p1:p:369-376

DOI: 10.1016/j.energy.2015.07.018

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