Browsing by Author "ARA, ISMAT"

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    DESIGN, FABRICATION & PERFORMANCE ANALYSIS OF A PARABOLIC SOLAR CONCENTRATOR MADE OF MIRROR
    (2015-06-24) ARA, ISMAT; KHANOM, TAHMINA; FATIMA, TASNIA
    Parabolic solar concentrators are a low cost implementation of concentrated solar power technology that uses parabolic trough shaped mirrors to concentrate the incident direct normal irradiation onto a receiver tube which is placed at the focal line of the trough. The efficiency and cost of the parabolic solar concentrator designs are influenced by structural stiffness, choice of materials, assembly tolerances, mirror cleanliness and wear. In our project we tried to simplify the design and improve the efficiency of concentrated collector. In designing parabolic solar concentrator we tried to ensure that it must be socially accepted, cheap, able to withstand rough handling and able to heat effectively. Our objective was to construct a suitable model and make it applicable in Bangladesh. The tests were carried out during the month of September and October, 2012 at Dhaka. The parabolic trough collector was able to heat up water up to 780 C in the month of September. The maximum temperature was found to be 760 C in the month of October. The average theoretical efficiency was found to be almost 61%. The average experimental efficiency was found to be 2.44% in the month of September and 2.09% in the month of October.