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The Effect of Wind on Combined Convective Loss From A Bicylindrical Cavity Receiver: An Experimental Study
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DOR
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20.1001.2.9919199705.1399.11.1.447.2
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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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The performance of the solar cavity receiver is considerably affected by wind specifications in the parabolic dish system# in this paper, an experimental study is performed to investigate the effect of wind speed, wind direction, and cavity inclination on the combined convective loss from a bicylindrical cavity receiver# the steady-state experiments are carried out in the range of 0#3 to 5#7 m/s wind speeds and three wind directions, including side-on, head-on, and back-on wind for downward-facing and horizontal cavity situations# the results show that the head-on wind causes higher combined convective loss comparing the other two wind directions for all wind speeds and cavity inclinations except 90° (vertically downward-facing) where all three wind directions essentially act the same# for the horizontal cavity receiver, the forced convective loss is less than the natural convective loss for all wind directions and speeds# empirical correlation is also developed for combined nusselt number as a function of reynolds number, grashof number, cavity inclination, wind direction, and the absolute temperature ratio for the downward-facing cavity# comparing the proposed correlation combined nusselt number with experimental results shows a maximum deviation of 20%#
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کلیدواژه
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Bicylindrical Cavity Receiver ,Combined Convective Loss ,Wind Effects ,Nusselt Number
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آدرس
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University Of Sistan And Baluchestan, Iran, University Of Sistan And Baluchestan, Iran, University Of Sistan And Baluchestan, Iran
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Authors
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