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Experimental Investigation of Alumina-Water Nanofluid in Solar Evacuated Tube Collector
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DOR
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20.1001.2.9919199705.1399.11.1.184.9
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نویسنده
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- - ,- -
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منبع
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كنگره مهندسي شيمي - 1399 - دوره : 11 - یازدهمین کنگره بین المللی مهندسی شیمی - کد همایش: 99191-99705
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چکیده
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One of the issues raised today in the processes of heat transfer is the need to increase the heat transfer and minimize the heat transfer equipment# the thermal conductivity of working fluid and the convective heat transfer coefficient play a major role in measuring the efficiency of the heat transfer equipment such as solar evacuated tube collectors( setc)# water, ethylene glycol and oil are among the commonly used working fluids in the thermal equipment#attained results revealed that the collector efficiency had ascending trend with increasing alumina- water nanofluid concentration, and reached 27#2% for the nanofluid 1 %wt from about 15#3% for the base fluid# in general, the efficiency was increased to 67#9% and 77#7% for the nanofluids 0#5 and 1 %wt, respectively, than when water was used as the working fluid# empirical studies demonstrated that the collector efficiency increases for all three samples with an increase in the mean radiation, which was confirmed as a general trend in the collector efficiency# it was noteworthy that the collector efficiency has more fluctuations in cases where the nanofluid was used#
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کلیدواژه
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Nanofluids ,Solar Evacuated Tube Collector (Setc) ,Collector Efficiency ,Solar Energy
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آدرس
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Materials And Energy Research Center (Merc), Iran, Materials And Energy Research Center (Merc), Iran
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Authors
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