• analytical expression for instantaneous exergy efficiency of a shallow basin passive solar still

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 614
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     an expression for instantaneous exergy efficiency of a passive solar still has been developed. the effect of design, operational and climatic parameters, namely effective absorptivity of basin liner (0.9–0.6), glass cover tilt (15–45°) and wind velocity (0.0–10 m/s) have been taken into account. it is found that with decrease in absorptivity (0.9–0.6) with time, the energetic and exergetic efficiencies decrease by 21.8% and 36.7% respectively. the effect of glass cover tilt is found to be insignificant and the respective efficiencies decrease by 0.75% and 0.47% per degree increase in tilt. these efficiencies increase rapidly up to a wind velocity of 2 m/s.

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