Energy and exergy analysis of direct absorption solar collector by using silver nanofluid

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Bozorgi Mehran; KARAMI MARYAM; DELFANI SHAHRAM

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Journal: Modares Mechanical Engineering Year:2018 | Volume:18 | Issue:7 Page(s): 41-49

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Title

Energy and exergy analysis of direct absorption solar collector by using silver nanofluid

Author(s)

Bozorgi Mehran | KARAMI MARYAM | DELFANI SHAHRAM | Issue Writer Certificate

Keywords

Direct Absorption Solar collectorQ1

Silver NanofluidQ1

Extinction CoefficientQ1

Exergy EfficiencyQ2

Abstract

In this study, energy and Exergy Efficiency of residential-type Direct Absorption Solar collector using PVP-coated Silver Nanofluid has been evaluated experimentally. First, stability and thermophysical and optical properties of nanofluid have been considered using the theoretical and experimental methods. Then, outdoor thermal performance of collector is investigated using the experimental setup based on EN12975-2. Results of energy analysis show that the collector efficiency is increased by increase of flowrate and concentration of nanofluid asymptotically. It is observed that Exergy Efficiency is firstly increased by nanofluid concentration and then, decreased after reaching the optimum value. The optimum concentration was 500 ppm for all flowrates. The variation of Exergy Efficiency by reduced temperature difference is similar to volume fraction. The optimum Exergy Efficiency is obtained at 0. 01 m2K/W. The decrease of Exergy Efficiency by flowrate indicated that exergy losses due to pressure drop have the significant effect on the collector performance.

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APA: Copy

Bozorgi, Mehran, KARAMI, MARYAM, & DELFANI, SHAHRAM. (2018). Energy and exergy analysis of direct absorption solar collector by using silver nanofluid. MODARES MECHANICAL ENGINEERING, 18(7 ), 41-49. SID. https://sid.ir/paper/179583/en

Vancouver: Copy

Bozorgi Mehran, KARAMI MARYAM, DELFANI SHAHRAM. Energy and exergy analysis of direct absorption solar collector by using silver nanofluid. MODARES MECHANICAL ENGINEERING[Internet]. 2018;18(7 ):41-49. Available from: https://sid.ir/paper/179583/en

IEEE: Copy

Mehran Bozorgi, MARYAM KARAMI, and SHAHRAM DELFANI, “Energy and exergy analysis of direct absorption solar collector by using silver nanofluid,” MODARES MECHANICAL ENGINEERING, vol. 18, no. 7 , pp. 41–49, 2018, [Online]. Available: https://sid.ir/paper/179583/en

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