Numerical analysis of pressurized cavity-airreceiver in concentrating solar power system

Sasidharan, S and Dutta, P (2018) Numerical analysis of pressurized cavity-airreceiver in concentrating solar power system. In: 5th International Conference on Computational Methods for Thermal Problems, THERMACOMP 2018, 9 - 11 July 2018, Bengaluru, pp. 747-751.

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Abstract

Concentrating solar power system consists of an optical concentrator, receiver and power block. Solar air receiver converts concentrated solar radiation from the optical concentrator to heat and acts as a high temperature source for the power block. Presence of porous medium in the flow domain increases convective heat transfer to the fluid by providing large surface area. This study models coupled optical and thermal analysis of receiver with ceramic and steel foam/mesh as porous absorber. Ray tracing analysis of the concentrator provides energy input to the cavity receiver. Porous medium is modelled using LTNE model as temperatures of working fluid and hot solid matrix can be different. The ceramic and steel foam act as participating medium in the flow domain. Radiation transport in the flow domain is modelled using P1 approximation. The study also compares results for Local Thermal Equilibrium (LTE) and Local Thermal Non-Equilibrium (LTNE) models for the porous medium, which is assumed to be homogeneous and isotropic.

Item Type:	Conference Paper
Publication:	International Conference on Computational Methods for Thermal Problems
Publisher:	Dalian University of Technology
Additional Information:	The copyright for this article belongs to the Dalian University of Technology.
Keywords:	LTE; LTNE; Optical concentrator; Porous medium; Solar receiver
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	19 Aug 2022 04:46
Last Modified:	19 Aug 2022 04:46
URI:	https://eprints.iisc.ac.in/id/eprint/75948

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