Numerical Comparison of Elliptical and Conical Cavity Receiver of Solar Parabolic Dish Collector System

Tharun, M.; Navin, S. R.; Singh, K. Arjun; Sampathkumar, Arivazhagan; Natarajan, Sendhil Kumar

doi:10.1007/978-981-16-2794-1_53

Cited by 2 publications

(2 citation statements)

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“…It was observed that there was an increment in thermal efficiency by 5.63% at 100 • C and 40.45% at 200 • C for conical cavity [17]. Two different types of cavity receiver designs were studied numerically in an analysis executed by Tharun et al(2022).Two different deigns were conical and elliptical cavity receiver. The analysis was performed on different inclination, temperature and aspect ratio of the cavity receivers.…”

Section: Introductionmentioning

confidence: 99%

“…The analysis was performed on different inclination, temperature and aspect ratio of the cavity receivers. Results showed that elliptical cavity receiver has more heat transfer coefficient as compare to other receiver [18]. An experimental and computational investigation was presented by Reynolds et al(2004) to examine the heat loss and flow patterns of trapezoidal cavity [19].…”

Section: Introductionmentioning

confidence: 99%

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Thermal Performance Improvement of Modified Hemispherical Cavity Receiver with Air Curtain

Simer

Maurya

Kumar

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Heat losses from solar cavity receivers degrade the efficiency of solar parabolic dish collector system. Specifically, increased convection losses emulate a significant contribution in decreasing the performance of the modified solar cavity receiver and hence, reducing these convection losses has become a matter of great concern. The Air curtain plays a crucial role in minimizing the convection losses. This work proposes an air curtain-based modified cavity receiver wherein a plane nozzle is placed on the face of receiver to produce air curtain effect. Air curtain will prevent hot air from escaping the modified cavity receiver and increase the stagnation zone inside it to reduce natural convection on the surfaces. Numerical analyses are performed considering different air velocities and receiver orientations to evaluate the effect of air curtains on the convection losses. The impact of plane air nozzle parameters like outlet temperature, inclination, and outlet velocity of the nozzle on convection losses are shown and these parameters’ optimal value is evaluated. Our results state that the air curtain attached to the modified solar cavity receiver significantly improves performance by reducing the convection losses.

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Section: Introductionmentioning

confidence: 99%