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Development of a correlation for parameter controlling using exergy efficiency optimization of an Al2O3/water nanofluid based flat-plate solar collector.

Author(s) : SHOJAEIZADEH E., VEYSI F.

Type of article: Article

Summary

The current study deals with the exergy efficiency optimization of an Al2O3/water nanofluid-based flat-plate solar collector according to a mathematical optimization (Sequential Quadratic Programming (SQP) method). This study takes into account exergy efficiency optimization when solar radiation and ambient temperature parameters are assumed to be uncontrollable and presented to a wide range of transient data of climatic conditions where these might take place during spring and summer seasons of Kermanshah (Iran), and perform two main cases as follows: (1) the fluid temperature at the inlet of solar collector, Ti, is independent of storage tank (open loop); (2) the fluid temperature at the inlet of solar collector, Ti, is influenced by the presence of storage tank (closed loop). In any conditions of each case studies (working fluid with and without nanoparticles), a suitable decreasing exponential correlation as function of Ta/Gt values (i.e. ambient temperature to solar radiation ratio) is developed for the optimized exergy efficiency and also well controlling independent parameters values (mass flow rate of fluid, nanoparticle volume concentration and collector inlet temperature). Also, it is concluded that each of optimized parameters and the optimum exergy efficiency is of a linear relation with each other.

Details

  • Original title: Development of a correlation for parameter controlling using exergy efficiency optimization of an Al2O3/water nanofluid based flat-plate solar collector.
  • Record ID : 30017635
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 98
  • Publication date: 2016/04/05
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2016.01.001

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