Open AccessInvestigation on Exergy in The Process of Heat Exchanger Defrosting
Author(s) -
Dong Wei,
Yongcun Li
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/514/4/042033
Subject(s) - defrosting , exergy , heat exchanger , frost (temperature) , thermodynamics , air source heat pumps , environmental science , process engineering , nuclear engineering , heat pump , materials science , engineering , physics , composite material
Excellent thermodynamics performance of heat exchangers plays a vital role in the effective operation of the air source heat pump (ASHP). However, the growing process of frost on the surfaces of the heat exchanger in winter could always affect the thermodynamic performance of the heat exchanger, which has attracted a great deal of attention over the past years. Moreover, the exergy analysis based on the second law of thermodynamics of the heat exchangers in the frosting condition has not been investigated before. In the present paper, exergy analysis of air-side heat exchanger was experimentally investigated. The experimental results show that exergy destruction would reach the minimum. The system has the lowest peak of energy utilization. This study is particularly useful for the design of optimal defrosting condition for heat exchangers of ASHP in winter.