کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1550456 1513123 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Model-based design and analysis of heat pipe working fluid for optimal performance in a concentric evacuated tube solar water heater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Model-based design and analysis of heat pipe working fluid for optimal performance in a concentric evacuated tube solar water heater
چکیده انگلیسی
In this study, a semi-dynamic model of a concentric evacuated tube solar water heater is developed to investigate the effect of working fluid design on technical and economic performance of a typical solar water heater in a household located at Sydney, Australia. The model is validated against experimental data. The effects of using water, ammonia, acetone, methanol, and pentane as working fluids of the built-in heat pipe are discussed comparatively during a typical day of operation. Water is identified as the best working fluid amongst the others. The variation of thermal resistance and critical heat flux of the heat pipes due to change in weather condition is presented and discussed. Three hypothetical working fluids are then proposed for further analysis which led to a working fluid design superior to water in performance. It is shown that the performance of the solar water heater can be significantly enhanced up to 28% and 50% from economical and technical points of view, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 94, August 2013, Pages 162-176
نویسندگان
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