Detailed parametric analyses of heat transfer in CPC solar energy collectors

Journal Article · Wed Mar 31 23:00:00 EST 1993 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(93)90027-L· OSTI ID:6506062

Eames, P C; Norton, B ^[1]

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1. Univ. of Ulster (United Kingdom)

A detailed parametric analysis of heat transfer in compound parabolic concentrating solar energy collectors has been performed, using a unified model for their optical and thermophysical behaviour. The effects of angular inclination and collector acceptance angles on free convection within the cavity are presented. The circumferential variation of local Nusselt number about the absorber is determined. A convective heat transfer correlation is obtained for the average Nusselt number with respect to Grashof number that takes into account acceptance angle and angular inclination. The developed correlation is extended to truncated compound parabolic concentrators.

• OSTI ID: 6506062
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Journal Name: Solar Energy (Journal of Solar Energy Science and Engineering); (United States) Vol. 50:4; ISSN SRENA4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
ANGULAR CORRELATION
COMPOUND PARABOLIC CONCENTRATORS
CONVECTION
CORRELATIONS
ENERGY
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
GRASHOF NUMBER
HEAT TRANSFER
INCLINATION
MASS TRANSFER
NATURAL CONVECTION
NUSSELT NUMBER
PARAMETRIC ANALYSIS
RENEWABLE ENERGY SOURCES
SOLAR CONCENTRATORS
SOLAR ENERGY
SOLAR EQUIPMENT