Thermal modeling of a pressurized air cavity receiver for solar dish Stirling system

A solar cavity receiver model for the dish collector system is designed in response to growing demand of renewable energy. In the present research field, no investigations into the geometric parameters of a cavity receiver have been performed. The cylindrical receiver in this study is composed of an enclosed bottom at the back, an aperture at the front, a helical pipe inside the cavity and an insulation layer on the external surface of the cavity. The influence of several critical receiver parameters on the thermal efficiency is analyzed in this paper: cavity inner diameter and cavity length. The thermal model in this paper is solved considering the cavity dimensions as variables. Implementing the model into EES, each parameter influence is separately investigated, and a preliminary optimization method is proposed.

[1]  Ya-Ling He,et al.  Study on combined heat loss of a dish receiver with quartz glass cover , 2013 .

[2]  S. Churchill,et al.  A Correlating Equation for Forced Convection From Gases and Liquids to a Circular Cylinder in Crossflow , 1977 .

[3]  Yiding Cao,et al.  Convection heat loss from cavity receiver in parabolic dish solar thermal power system: A review , 2010 .

[4]  Sendhil Kumar Natarajan,et al.  An improved model for natural convection heat loss from modified cavity receiver of solar dish concentrator , 2009 .

[5]  A. Steinfeld,et al.  Band-approximated radiative heat transfer analysis of a solar chemical reactor for the thermal dissociation of zinc oxide , 2007 .

[6]  Alain Ferriere,et al.  Thermal model of a dish/Stirling systems , 2009 .

[7]  Douglas T. Reindl,et al.  An alternative method for calculation of semi-gray radiation heat transfer in solar central cavity receivers , 2012 .

[8]  Adrien Toutant,et al.  Numerical investigation of a ceramic high-temperature pressurized-air solar receiver , 2013 .

[9]  Roy E. Hogan,et al.  AEETES—A solar reflux receiver thermal performance numerical model , 1991 .

[10]  R. Shah,et al.  Handbook of single-phase convective heat transfer , 1987 .

[11]  Terry G. Lenz,et al.  Thermal performance of solar concentrator/cavity receiver systems , 1985 .

[12]  Angelika Bayer,et al.  Solar Engineering Of Thermal Processes , 2016 .

[13]  Hohyun Lee,et al.  Design of a high temperature cavity receiver for residential scale concentrated solar power , 2012 .

[14]  R. Y. Ma.  Wind effects on convective heat loss from a cavity receiver for a parabolic concentrating solar collector , 1993 .

[15]  E. N. Sieder,et al.  Heat Transfer and Pressure Drop of Liquids in Tubes , 1936 .