Coupled optical and thermal analysis of large aperture parabolic trough solar collector

Malan, Anish; Kumar, K. Ravi

doi:10.1002/er.6128

Cited by 15 publications

(9 citation statements)

References 53 publications

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“…Furthermore, the manufacturing capability for a large aperture concentrator (7-10 m) is considered in accordance with Euro Trough, i.e., total optical error of 8 mrad. [46] The flux distribution results are provided in terms of local concentration ratio (LCR), which is a ratio of the local flux intercepted at a point on the absorber to flux on the aperture of the PTSC.…”

Section: Resultsmentioning

confidence: 99%

“…But such absorber size is not commercially available. Hence the larger and [46] Copyright 2020, John Wiley & Sons Ltd. immediate next available absorber size of 90 mm is considered for the analysis. Therefore, the flux distribution of the 7 m aperture PTSC with 80 and 90 mm absorber size is provided in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

“…The study is the extension of Malan and Kumar, where the focus is to provide the flux distribution on the absorber circumference of the large aperture PTSC. [46] In this study, the investigation is performed on the effect of the various random and nonrandom errors associated with the PTSC on its optical performance. The Sunshape is modelled by considering the limb darkening effect in the incoming radiation.…”

Section: Optical Model and Validationmentioning

confidence: 99%

“…[50] The complete description of the optical model and the assumption considered in the analysis can be referred from Malan and Kumar. [46] The flowchart of the optical model developed using MATLAB is provided in Figure 4. The analysis is performed on the 2D geometry to save computational time.…”

Section: Optical Model and Validationmentioning

confidence: 99%

“…[45] Very limited literature is available, which considered the limb darkening effect in the solar cone. [46,47] Furthermore, very few literatures are available that analyzed the effect of all the optical errors on the PTSC performance by considering the Buie and Gaussian Sunshape. Majorly, the effect of the optical errors are studied for 5.77 m aperture or by highlighting the GCR, but the effect may not be directly applied on the other large aperture PTSC even by keeping the same GCR.…”

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confidence: 99%

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Performance Benchmarking of Large Aperture Parabolic Trough Solar Collector for Various Optical Errors and Geometrical Concentration Ratio

Malan

Kumar

2021

Energy Tech

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Clean energy and a pollution-free environment are becoming the necessity of life along with food, drinkable water, and shelter. Across the world, governments are taking the initiative to promote renewable energy and sustainable development. Solar energy is one of the potential renewable energy sources to achieve these objectives. Solar energy can be harnessed in different ways as per end-use requirements such as electricity or heat using appropriate solar energy technologies. [1] This manuscript is focused on one of the most proven and commercially available solar thermal technology, i.e., parabolic trough solar collector (PTSC), which consists of a concentrator, receiver, support structure, and a tracking system. [2] The technology has been commercially available for more than four decades, and since then, researchers have made efforts to improve its performance and reduce its cost. The performance analysis of the PTSC can be categorized into optical, thermal, and structural analysis. [3] The performance investigation of PTSC is indicated by performing the optical analysis followed by the thermal and structural analysis. The optical analysis has been performed by various approaches such as analytical formulation, [4][5][6][7][8][9] measurement techniques [10][11][12][13][14][15][16][17][18] and by modeling software using the Monte Carlo ray tracking approach. [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] The errors and imperfections in the PTSC have a significant effect on the optical performance of the concentrator. The potential optical errors associated with the PTSC are apparent changes in Sun subtended angle, slope errors, tracking errors, misalignment of the receiver tube, and misalignment of the concentrator, etc. Among these errors, subtended angle, slope errors, and tracking errors are classified as random errors that can be addressed statistically. Misalignment of the concentrator and receiver tube is classified as nonrandom errors for which the provision has to be made in the optical model. [34] The analysis of the errors is very important to determine the performance of the PTSC, as the precise manufacturing of the subcomponents and installations are very difficult and expensive. [35] It has been found that the PTSC field's performance does not match the expected performance at the design point. One of the reasons behind that is the inclusion of the optical errors in the system during the manufacturing and the erection of the collector. [35][36][37] Various researchers have analyzed the influence of these errors on optical performance, and a review of the same is provided in Table 1.As highlighted in Table 1, studies are performed to evaluate the effect of these optical errors, such as an error in reflector curvature precision, tracking error, and the alignment error. The

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Optical Model and Validationmentioning

confidence: 99%

Section: Optical Model and Validationmentioning

confidence: 99%

mentioning

confidence: 99%

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Performance Benchmarking of Large Aperture Parabolic Trough Solar Collector for Various Optical Errors and Geometrical Concentration Ratio

Malan

Kumar

2021

Energy Tech

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Effect of receiver geometry on the optical and thermal performance of a parabolic trough collector

Al-Dulaimi

Amori

2022

Heat Trans

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In this study, the optical and thermal performance of a Parabolic Trough Collector PTC system is investigated theoretically. A series of numerical simulations and theoretical analysis has been conducted to investigate the effect of the receiver geometry and location relative to the focal line on its optical performance. The examined receiver geometries are circular, square, triangular, elliptical and a new design of circular-square named as channel receiver.The thermal performance of PTC is studied for different flow rates from (0.27 to 0.6 lpm) theoretically. Results showed that the best optical design is the channel receiver with an optical efficiency of 84% while the worst is the elliptical receiver with an optical efficiency of 70%. Thermally the best design is the elliptical receiver with a thermal efficiency of 85% while the worst is the circular receiver with a thermal efficiency of 82%.

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Thermal and geometrical assessment of parabolic trough collector-mounted double-evacuated receiver tube system

Thappa

Chauhan

Anand

et al. 2021

Clean Techn Environ Policy

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Coupled optical and thermal analysis of large aperture parabolic trough solar collector

Cited by 15 publications

References 53 publications

Performance Benchmarking of Large Aperture Parabolic Trough Solar Collector for Various Optical Errors and Geometrical Concentration Ratio

Performance Benchmarking of Large Aperture Parabolic Trough Solar Collector for Various Optical Errors and Geometrical Concentration Ratio

Effect of receiver geometry on the optical and thermal performance of a parabolic trough collector

Thermal and geometrical assessment of parabolic trough collector-mounted double-evacuated receiver tube system

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