An evaluation on thermal performance of CPC solar collector

“…The trials were performed on considered days for different mass flow rates (0.50, 0.57, 0.63, 0.72 kg/sec). The thermal efficiency is defined as the ratio of the energy stored in the collector to the total energy incident onto the collector during same time is calculated as follows [18][19][20]: where m = mass flow rate of water (kg/s), c p = specific heat (J/kg·K), T o,w = water outlet temperature (K), T i,w = water inlet temperature, (K), I effective = effective incident solar radiation, (W/m 2 ), A = collector area (m 2 ), DNI = daily normal solar radiation, (W/m 2 ), cos θ = hour angle (degree).…”

Section: System Description and Experimental Proceduresmentioning

confidence: 99%

Performance investigation of compound parabolic collector system with triangular receiver with and without internal fins

Chavan¹,

Gulhane²

2016

Int. J. Energy Stat.

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The objective of the present research is to evaluate the thermal performance of CPC using internal fins as integral element of the triangular receiver at different mass flow rates. The influence of internal fin into triangular receiver is important geometric aspect for effective heat gain and retains thermal energy to the working fluid. The receiver without fins is taken as reference to compare the performance of receiver with different fin configurations. In this comparative analysis, the influence of concentrated solar fluxes, fin structure and mass flow rate has been taken into account to evaluate heat transfer, temperature and velocity distribution with the help of CFD to reproduce the experimental results. The realizable k-ε turbulence model with enhanced wall function is set to solve 3D modeling with CFD simulation. The investigation shows that, there is potential enhancement in heat transfer by the application of internal fins in triangular receiver for different flow rates.

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“…Kim et al [8] researched the thermal performance of evacuated CPC solar collector with a cylindrical receiver and analyzed a numerical model based on the irradiation determined in each moment; they concluded that the numerical model could accurately estimate the performance of the solar collectors.…”

Section: State Of the Art Of This Technologymentioning

confidence: 99%

Development and experimental investigation of a compound parabolic concentrator

Santos-González

Ortega

Gómez

et al. 2011

Int. J. Energy Res.

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SUMMARY The numerical simulation and experimental validation of a compound parabolic concentrator (CPC) are presented. The solar device had an aperture area of 1.33 m2, a real concentration ratio of 3.5, an acceptance half angle of 15°, and a carbon steel (or aluminum) tubular receiver with an outer diameter of 0.0603 m and coated with a commercial selective surface. Experimental tests were performed using water as working fluid at solar noon; the inlet temperatures used varied from 30 °C to 70 °C and the mass flow rates from 0.05 kg/s to 0.25 kg/s. A comparison of the experimental results with the numerical model developed was carried out. The results of the thermal efficiency, outlet temperature, and pressure drop were compared and found to be in close agreement with the experimental data. Therefore, the model is a reliable tool for the design and optimization of compound parabolic concentrators. Because the numerical model is based on the application of physical laws, it is possible to extrapolate its use with confidence to other fluids, mixtures, and operating conditions. Copyright © 2011 John Wiley & Sons, Ltd.

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An evaluation on thermal performance of CPC solar collector

Cited by 85 publications

References 8 publications

Symulacje Odbiornika Ciepła Wysokotemperaturowego Pracującego W Układzie Helioenergetycznym

Symulacje Odbiornika Ciepła Wysokotemperaturowego Pracującego W Układzie Helioenergetycznym

Performance investigation of compound parabolic collector system with triangular receiver with and without internal fins

Development and experimental investigation of a compound parabolic concentrator

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