Thermodynamic analysis of a novel solar water heating system during low sun radiation in Iran
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 560
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شناسه ملی سند علمی:
JR_EES-6-3_007
تاریخ نمایه سازی: 11 خرداد 1398
چکیده مقاله:
This paper reports a plenary thermodynamic model of a novel solar system for water heating in buildings. Energy and exergy analyses are used to characterize the exergy destruction rate in any component and calculate system overall efficiency. The system consists of a solar evaporator, a heat exchanger to produce hot water, and an auxiliary pump. A computer simulation program using EES software is developed to model the solar water heating system. The system provides hot water during the hours of low sun radiation. Thermodynamic analysis involves the designation of effects of heat exchanger pinch point and ambient temperatures on the energetic and exergetic performance of the solar water heating system. The performance parameters computed are exergy destruction, and energetic and exergetic efficiencies. The result showed that the main source of exergy destruction is the solar evaporator. In the solar evaporator, 92.85% of the input exergy was destroyed. The other main source of exergy destruction is the heat exchanger, at 4.15%. The overall energetic and exergetic efficiencies of the solar water heating system were approximately 60.17% and 3.002% respectively.
کلیدواژه ها:
Energy Efficiency ، Exergy Efficiency ، SLHPS ، Solar Water Heating System ، Pinch Point Temperature
نویسندگان
Vahid Beygzadeh
Department of Mechanical Engineering, Faculty of Engineering, Urmia University of Technology,Urmia, Iran
Shahram Khalil Arya
Department of Mechanical Engineering, Faculty of Engineering, Urmia University of Technology,Urmia, Iran
Iraj Mirzaee
Department of Mechanical Engineering, Faculty of Engineering, Urmia University of Technology,Urmia, Iran
Gholamreza Miri
Department of Business Management, National Iranian Oil Refining & Distribution Company, Tehran, Iran
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