Optimization of parabolic trough solar collectors

Rabl, Ari; Bendt, P.; Gaul, H.

doi:10.1016/0038-092x(82)90077-9

Cited by 56 publications

(9 citation statements)

References 9 publications

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“…C peaks at 151 suns for the ideal case. For PM σ = 10 mrad, the peak C decreases by 86% from its ideal case value to 22, while η is reduced by 63% from its ideal case value to 34% for a target of width 0.1 m. Typically, σ = 2.5 mrad for parabolic trough concentrators [7]. Fig.…”

Section: The Monte-carlo Simulationmentioning

confidence: 91%

Optical Design of a Novel Two-Stage Solar Trough Concentrator Based on Pneumatic Polymeric Structures

Bader

Haueter

Pedretti³

et al. 2009

Journal of Solar Energy Engineering

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An innovative concept for fabricating solar trough concentrators based on pneumatic polymer mirrors supported on precast concrete frames is presented. Optical aberration is corrected by means of a secondary specular reflector in tandem with a primary cylindrical concentrator. The optimal design is formulated for maximum solar flux concentration. The Monte Carlo ray-tracing technique is applied to determine the effect of reflective surface errors and structural beam deformations on the performance of the combined primary and secondary concentrating system. The numerical results are validated with field measurements on a 49.4 m length, 7.9 m width sun-tracking prototype system. Theoretical maximum solar concentration ratio is 151 suns; the measured one with a flat secondary reflector was 55 suns.

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Section: The Monte-carlo Simulationmentioning

confidence: 91%

Optical Design of a Novel Two-Stage Solar Trough Concentrator Based on Pneumatic Polymeric Structures

Bader

Haueter

Pedretti³

et al. 2009

Journal of Solar Energy Engineering

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“…2), values of F∕W < 1 are not of practical interest, in contrast to parabolic trough collectors, which typically have F∕W values in the range of 0.2-0.6 [19][20][21].…”

Section: A Optical Efficiency At Normal Incidencementioning

confidence: 99%

Optical analysis of a curved-slats fixed-mirror solar concentrator by a forward ray-tracing procedure

Pujol-Nadal

Martínez-Moll

2013

Appl. Opt.

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Fixed-mirror solar concentrators (FMSCs) use a static reflector and a moving receiver. They are easily installable on building roofs. However, for high-concentration factors, several flat mirrors would be needed. If curved mirrors are used instead, high-concentration levels can be achieved, and such a solar concentrator is called a curved-slats fixed-mirror solar concentrator (CSFMSC), on which little information is available. Herein, a methodology is proposed to characterize the CSFMSC using 3D ray-tracing tools. The CSFMSC shows better optical characteristics than the FMSC, as it needs fewer reflector segments for achieving the same concentration and optical efficiency.

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“…Collector design is based on Rabl et al [15] procedure. The details of calculation procedure are explained in [13].…”

Section: Fig 1 Data Input Of Developed Collector Design Softwarementioning

confidence: 99%

Design Analysis for Expansion of Shiraz Solar Power Plant to 500 kW Power Generation Capacity

Azizian¹,

Yaghoubi²,

Hesami³

et al. 2011

Linköping Electronic Conference Proceedings

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Various projects have been developed to use solar energy and some of them are in the course of developing all around the world. In Iran a 250 kW pilot solar power plant is constructed using parabolic trough collectors from 2001 to 2006. Results of thermal tests of the plant leads to the generation of steam with 250 P o P C temperature and 2 MPa pressure. Based on several years of experiments (from 2006-2010) it is decided to expand the solar thermal power rate to produce 500 kW electricity by combining the present system with a larger size collector and an auxiliary boiler. This article, explains the thermal design of the new collector and then various design options for combination of the new collector to the present plant have been studied and the most practical method of producing 500 kW is selected applying first law of thermodynamics utilizing a hybrid system.

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Optimization of parabolic trough solar collectors

Cited by 56 publications

References 9 publications

Optical Design of a Novel Two-Stage Solar Trough Concentrator Based on Pneumatic Polymeric Structures

Optical Design of a Novel Two-Stage Solar Trough Concentrator Based on Pneumatic Polymeric Structures

Optical analysis of a curved-slats fixed-mirror solar concentrator by a forward ray-tracing procedure

Design Analysis for Expansion of Shiraz Solar Power Plant to 500 kW Power Generation Capacity

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