Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors

Ratzel, A. C.

doi:10.2172/5907679

Cited by 4 publications

(4 citation statements)

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“…He also suggested that receiver tube diameter can be increased in compensation of dislocation without a significant penalty on performance of the PTC [18]. Another studies carried out by Ratzel [7] and Ratzel and Sission [28] on the receiver dislocation also supported the observations of Treadwell [5]. Treadwell and Grandjean [29] stated that the receiver location error significantly degraded the annual performance of the PTC depending upon the magnitude of dislocation.…”

Section: Introductionmentioning

confidence: 80%

“…Sky is considered as a large enclosure and its effective temperature has been calculated by Eq. (7) [4,16] = 0.0552 1.5 (7) Convective heat loss from the outer surface of the glass tube is calculated by specifying the heat transfer coefficient and ambient temperature. Heat transfer coefficient has been determined by using Eq.…”

Section: Simulation Assumptions and Boundary Conditionsmentioning

confidence: 99%

“…The maximum extraction of thermal energy from available solar irradiation is a challenge for researchers. In the past few decades, many researchers [5][6][7][8][9][10][11][12] have presented studies to improve the efficiency of the PTC system; still, there is a scope for improvement in some aspects. PTC system comprises a reflective cylindrical parabola, which focuses the incident solar radiation on a receiver located on its focal line (Figure1).…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of Parabolic Trough Collector With Receiver Position Error

Donga

Kumar

2021

Journal of Thermal Engineering

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In the present study, the effect of receiver position error on the optical and thermal performance of a parabolic trough collector (PTC) has been studied. Optical analysis of the PTC has been carried out by using Monte Carlo ray tracing (MCRT) method. The solar heat flux profile obtained from the optical analysis is coupled with the finite volume method (FVM) to study the thermal performance of the PTC. Simulations have been done for experimental SEGS LS2 solar collector used in Sandia National Laboratories. Syltherm 800 has been considered as heat transfer fluid (HTF). Receiver position errors in two directions i.e. along optical axis and lateral direction, have been taken. Results show that the receiver position error substantially influences the solar heat flux distribution and hence the temperature distribution on the absorber tube. The maximum circumferential temperature difference over the absorber tube increases up to by 199.7 K with receiver dislocation along the optical axis. The effects of the receiver position error on the optical efficiency and collector efficiency have also been studied. A maximum drop of 32% in the optical efficiency is observed when the receiver is displaced from the focus by 1.63% of focal length of the collector in both directions. The collector efficiency decreases by up to 14% when the receiver is offset by 1.63% of focal length of the collector along optical axis (away from the trough).

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Section: Introductionmentioning

confidence: 80%

Section: Simulation Assumptions and Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of Parabolic Trough Collector With Receiver Position Error

Donga

Kumar

2021

Journal of Thermal Engineering

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“…Several studies [1][2][3] have documented these efforts and have predicted instantaneous efficiency or clear-day performance for individual parabolic trough component improvements.…”

Section: Introductionmentioning

confidence: 99%

Near-term improvements in parabolic troughs: an economic and performance assessment

Gee¹,

Murphy²

1981

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Determination of error tolerances for the optical design of parabolic troughs for developing countries

Guven

Bannerot

1986

Solar Energy

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Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors

Cited by 4 publications

References 0 publications

Performance Evaluation of Parabolic Trough Collector With Receiver Position Error

Performance Evaluation of Parabolic Trough Collector With Receiver Position Error

Near-term improvements in parabolic troughs: an economic and performance assessment

Determination of error tolerances for the optical design of parabolic troughs for developing countries

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