Taylor and Francis Ltd.;Philadelphia, PA: Taylor & Francis Group
摘要:
摘要： This article provides an experimental investigation of the effect of flow direction for refrigerant R-410A evaporated in a plate heat exchanger. Parallel-flow and counterflow arrangements with 2°C and 5°C exit superheat conditions were tested. The refrigerant entered the test section at a vapor quality of 0.24 and evaporated at a saturation temperature of 1.1°C. The experimental results were analyzed by the evaporation heat transfer coefficient and overall average heat transfer coefficient separately. The evaporation heat transfer coefficient in parallel-flow arrangement is higher than that in the case of counterflow arrangement. However, the average heat transfer coefficients are affected not only by the flow direction, but also by the exit superheat condition. The interaction of these two effects causes there to be almost no difference of the average heat transfer performance between these two flow arrangements for low exit superheat condition. While the refrigerant exit superheat is high, the overall heat transfer performance of the parallel-flow case is lower than that of the counterflow case. 出版者： Philadelphia, PA: Taylor & Francis Group 出版日期： 2013-10-21 出處： Heat transfer engineering, 2013-10, Vol.34 (13), p.1133-1139 資源來源： EBSCOhost Academic Search Premier 版權： Copyright Taylor & Francis Group, LLC 2013 版權： 2014 INIST-CNRS 版權： Copyright Taylor & Francis Ltd. 2013 識別號： ISSN: 0145-7632 識別號： EISSN: 1521-0537 識別號： DOI: 10.1080/01457632.2013.763553 識別號： CODEN: HTEND2
