Computation of radiative-convective heat transfer in direct absorber solar collectors

Beg, OA ORCID:, Kuharat, S, Kadir, A, Beg, TA, Leonard, HJ and Jouri, W 2020, 'Computation of radiative-convective heat transfer in direct absorber solar collectors' , in: Understanding thermal radiation , Nova Science, New York, pp. 300-409. (In Press)

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Solar energy is an important application of thermal radiation heat transfer. To simulate radiative transfer, generally the integro-differential radiative transfer equation (RTE) has to be solved. However, this is very challenging even with numerical methods and virtually intractable when other modes of heat transfer are considered simultaneously for complex geometries. In this chapter, we will review recent progress made employing several algebraic flux approximations for analysing coupled radiative -convection flows within DASC (direct absorber solar collector) enclosures. Laminar and steady-state flows only are considered. Different algebraic flux approximations will be described and the Rosseland diffusion and Traugott P1-differential radiative transfer model will be considered in subsequent simulations. A variety of real solar collector working fluids will also be considered including gases, water, metallic nanofluids (doped with copper oxide, silver oxide, titanium oxide nanoparticles). Several robust numerical simulation techniques will also be described i.e. the forward time centered space (FTCS) finite difference method, MAPLE numerical quadrature, Harlow-Welch marker-in-cell method (MAC) and the ANSYS FLUENT finite volume method. Other methods are also mentioned including the Lattice Boltzmann method (LBM) and Smoothed Particle Hydrodynamics (SPH). Several geometries will also be explored including rectangular enclosures, trapezoidal cavities, annular tubular collector enclosures and peristaltic deformable tubes (also featuring magnetic working solar nanofluids). Extensive details of the formulations, physical interpretation and graphical visualization of temperatures, velocities, radiative intensities, isotherm and streamline distributions is also included. Alternative radiative flux models for simulations are also addressed. Future pathways for research in this vibrant field are also outlined. A comprehensive state-of-the-art bibliography is included. S. Kuharat, A. Kadir, T.A. Bég, H. J. Leonard 2 and W. S. Jouri

Item Type: Book Section
Editors: Rawat, KS
Schools: Schools > School of Computing, Science and Engineering
Publisher: Nova Science
Depositing User: OA Beg
Date Deposited: 28 Sep 2020 10:21
Last Modified: 16 Feb 2022 05:44

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