کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
648778 1457199 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal design of a micro evaporator with lateral gaps
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Optimal design of a micro evaporator with lateral gaps
چکیده انگلیسی

This paper presents an optimal design of a micro evaporator, to maximize the heat transfer coefficient (HTC) and it forms the starting point in developing miniaturized vapor–compression refrigeration system. The experimental design is adopted to determine the optimal parameters of the evaporator for realizing the inlet–outlet conditions of the refrigerating cycle, and for increasing the HTC. The number of lateral gaps, channel width, and lateral gap size were optimized to maximize HTCs of 2062, 2029, and 1895 W/m2K for heating powers of 40, 60, and 80 W, respectively. The refrigerant and the mass flow rate were fixed as R-123 and 0.72 g/s, respectively. Among the three design parameters, the channel width is the most sensitive parameter influencing the HTC. A periodic change of flow pattern was observed in the evaporator with high HTCs, and a dryout was observed in the evaporator with low HTCs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 29, Issues 14–15, October 2009, Pages 2921–2926
نویسندگان
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