Development of empirical equations for irradiance profile of a standard parabolic trough collector using Monte Carlo ray tracing technique

Islam, Majedul, Karim, M. Azharul, Saha, Suvash C., Miller, Sarah, & Yarlagadda, Prasad K.D.V. (2013) Development of empirical equations for irradiance profile of a standard parabolic trough collector using Monte Carlo ray tracing technique. Advanced Materials Research, 860-863, pp. 180-190.

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Abstract

Irradiance profile around the receiver tube (RT) of a parabolic trough collector (PTC) is a key effect of optical performance that affects the overall energy performance of the collector. Thermal performance evaluation of the RT relies on the appropriate determination of the irradiance profile. This article explains a technique in which empirical equations were developed to calculate the local irradiance as a function of angular location of the RT of a standard PTC using a vigorously verified Monte Carlo ray tracing model. A large range of test conditions including daily normal insolation, spectral selective coatings and glass envelop conditions were selected from the published data by Dudley et al. [1] for the job. The R2 values of the equations are excellent that vary in between 0.9857 and 0.9999. Therefore, these equations can be used confidently to produce realistic non-uniform boundary heat flux profile around the RT at normal incidence for conjugate heat transfer analyses of the collector. Required values in the equations are daily normal insolation, and the spectral selective properties of the collector components. Since the equations are polynomial functions, data processing software can be employed to calculate the flux profile very easily and quickly. The ultimate goal of this research is to make the concentrating solar power technology cost competitive with conventional energy technology facilitating its ongoing research.

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ID Code: 66188
Item Type: Journal Article
Refereed: Yes
Keywords: CSP, LS2, Optical modeling, MCRT, PTC
DOI: 10.4028/www.scientific.net/AMR.860-863.180
ISSN: 1022-6680
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Trans Tech Publications
Deposited On: 15 Jan 2014 22:34
Last Modified: 16 Jan 2014 22:02

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