Wind effects on convective heat loss from a cavity receiver for a parabolic concentrating solar collector

Technical Report · Wed Sep 01 04:00:00 EDT 1993

DOI:https://doi.org/10.2172/10192244· OSTI ID:10192244

Ma, R Y ^[1]

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1. California State Polytechnic Univ., Pomoma, CA (United States). Dept. of Mechanical Engineering

Tests were performed to determine the convective heat loss characteristics of a cavity receiver for a parabolid dish concentrating solar collector for various tilt angles and wind speeds of 0-24 mph. Natural (no wind) convective heat loss from the receiver is the highest for a horizontal receiver orientation and negligible with the reveler facing straight down. Convection from the receiver is substantially increased by the presence of side-on wind for all receiver tilt angles. For head-on wind, convective heat loss with the receiver facing straight down is approximately the same as that for side-on wind. Overall it was found that for wind speeds of 20--24 mph, convective heat loss from the receiver can be as much as three times that occurring without wind.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States); California State Polytechnic Univ., Pomona, CA (United States). Dept. of Mechanical Engineering
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000; AC04-76DP00789
• OSTI ID: 10192244
• Report Number(s): SAND--92-7293; ON: DE94002279; BR: GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140702
CENTRAL RECEIVER
CONVECTION
CSP
Concentrating Solar Power
HEAT LOSSES
ORIENTATION
PARABOLIC DISH COLLECTORS
SOLAR CONCENTRATORS
TEMPERATURE MEASUREMENT
TESTING
VELOCITY
WIND