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A platform for research: civil engineering, architecture and urbanism
Exergy efficiency investigation and optimization of an Al2O3–water nanofluid based Flat-plate solar collector
Highlights A Flat-plate solar collector exergy efficiency with Al2O3 nanofluid investigated. Mass flow rate of fluid and ambient temperature effects on the exergy are studied. Collector inlet temperature and solar irradiance effects on the exergy are studied. Optimum values of nanoparticle fraction and collector inlet temperature is studied. Maximum exergy efficiency increased 0.72% with the presence of nanoparticles.
Abstract The present study aims to investigate exergy efficiency of a Flat-plate solar collector containing Al2O3–water nanofluid as base fluid. The effect of various parameters like mass flow rate of fluid, nanoparticle volume concentration, collector inlet fluid temperature, solar radiation, and ambient temperature on the collector exergy efficiency is investigated. Also, the procedure to determine optimum values of nanoparticle volume concentration, mass flow rate of fluid, and collector inlet fluid temperature for maximum exergy efficiency delivery has been developed by means of interior-point method for constrained optimization under the given conditions. According to the results, each of these parameters can differently affect the collector exergy by changing the value of the other parameters. The optimization results indicate that under the actual constraints, in both pure water and nanofluid cases the optimized exergy efficiency is increased with increasing solar radiation value. By suspending Al2O3 nanoparticles in the base fluid (water) the maximum collector exergy efficiency is increased about 1% and also the corresponding optimum values of mass flow rate of fluid and collector inlet fluid temperature are decreased about 68% and 2%, respectively.
Exergy efficiency investigation and optimization of an Al2O3–water nanofluid based Flat-plate solar collector
Highlights A Flat-plate solar collector exergy efficiency with Al2O3 nanofluid investigated. Mass flow rate of fluid and ambient temperature effects on the exergy are studied. Collector inlet temperature and solar irradiance effects on the exergy are studied. Optimum values of nanoparticle fraction and collector inlet temperature is studied. Maximum exergy efficiency increased 0.72% with the presence of nanoparticles.
Abstract The present study aims to investigate exergy efficiency of a Flat-plate solar collector containing Al2O3–water nanofluid as base fluid. The effect of various parameters like mass flow rate of fluid, nanoparticle volume concentration, collector inlet fluid temperature, solar radiation, and ambient temperature on the collector exergy efficiency is investigated. Also, the procedure to determine optimum values of nanoparticle volume concentration, mass flow rate of fluid, and collector inlet fluid temperature for maximum exergy efficiency delivery has been developed by means of interior-point method for constrained optimization under the given conditions. According to the results, each of these parameters can differently affect the collector exergy by changing the value of the other parameters. The optimization results indicate that under the actual constraints, in both pure water and nanofluid cases the optimized exergy efficiency is increased with increasing solar radiation value. By suspending Al2O3 nanoparticles in the base fluid (water) the maximum collector exergy efficiency is increased about 1% and also the corresponding optimum values of mass flow rate of fluid and collector inlet fluid temperature are decreased about 68% and 2%, respectively.
Exergy efficiency investigation and optimization of an Al2O3–water nanofluid based Flat-plate solar collector
Shojaeizadeh, Ehsan (author) / Veysi, Farzad (author) / Kamandi, Ahmad (author)
Energy and Buildings ; 101 ; 12-23
2015-04-25
12 pages
Article (Journal)
Electronic Resource
English
Energy and Exergy Efficiency of Flat Plate PVT Collector With Forced Convection
| British Library Online Contents | 2018
| British Library Online Contents | 2015