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- W867082279 abstract "The conventional tube-in-plate type flat plate solar collectors have low efficiency and higher heat losses due to surface based solar energy absorption and indirect transfer of heat from hot absorber surface to working fluid flowing through tubes. A full scale direct absorption solar collector having gross area of 1.4 m2 and working on volumetric absorption principle was developed to perform experimental study using thin film of Al2O3-H2O nanofluid. Use of nanofluid as working fluid improves the optical and thermo physical properties that result into an increase in the efficiency of the collector. Experimentation was carried using four different volume fractions of 20 nm Al2O3 nanoparticles, 0.001%, 0.005%, 0.01% and 0.05%. ASHRAE standard 93-86 was followed for calculation of instantaneous efficiency of solar collector. Improvement in efficiency of solar collector has been recorded in all four cases of using nanofluids in place of water. Instantaneous efficiency enhancement of 22.1%, 39.6%, 24.6% and 18.75% has been observed for 0.001%, 0.005%, 0.01% and 0.05% volume fraction respectively. The experimental results also indicated that collector efficiency peaked at certain volume fraction, and decreased for lower and higher values of volume fraction." @default.
- W867082279 created "2016-06-24" @default.
- W867082279 creator A5069285441 @default.
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- W867082279 date "2015-08-01" @default.
- W867082279 modified "2023-10-06" @default.
- W867082279 title "An experimental investigation of a low temperature Al2O3-H2O nanofluid based direct absorption solar collector" @default.
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- W867082279 doi "https://doi.org/10.1016/j.solener.2015.04.041" @default.
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