Influence of refrigerant circuitry arrangement of three-row finned tube evaporator on heat transfer performance under uniform wind speed distribution

Abstract

The EVAP-COND software was used to simulate 8 different refrigerant circuitry of the three-row tube heat exchanger under different superheat and outlet saturation temperature conditions. The influence of different refrigerant circuitry on the heat transfer performance of the evaporator was explored. And the influence of superheat and outlet saturation temperature on the evaporator and its changing law were analyzed and discussed. The results show that: Cross arrangement facilitated heat transfer. The dual-flow solution was better than the single-flow solution. And countercurrent arrangement was conducive to heat exchange. The best solution was g, and the worst solution was a. Under the conditions of this study, the heat transfer of curve g was 44.78% and 36.20% higher than curve a, respectively.