Defrost characteristics and performance improvement of electric heaters in R600a frost-free refrigerators

• Published in: Thermal science and engineering progress Vol. 58; p. 103219
• Main Authors: Zhang, Shuping, Yang, Zhao, Wang, Yiping, Zhao, Yanfeng, Shu, Yue, Zhao, Xing, Sun, Bin, Wang, Guoqing, Xie, Teng
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2025
• Subjects: Defrosting Efficiency; Defrosting Synchronization; Electric Heater; Temperature Uniformity; Defrosting Synchronization; Electric Heater; Defrosting Efficiency; Temperature Uniformity

•Defrosting on the evaporator is asynchronous from bottom to top.•The distributed heater improves defrosting by combining local and global heating.•Optimizing heater power distribution improves defrosting performance.•Defrosting is optimal with a 150 W global heater and a 50 W local heater. Defrosti...