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Title: High performance solar collector amenable to mass production

Abstract

The high temperature thermal performance of a mass producible evacuated tube solar collector (ETC) has been significantly improved by shaping the outer glass envelope into the profile of a nonimaging Compound Parabolic Concentrator (CPC). Placing the reflector surface in a vacuum eliminates degradation of the mirror's reflectance. The transparent part of the glass vacuum also functions as a window and thus eliminates the need for an external cover glazing. This paper describes the design, fabrication, and preliminary test results for a panel of prototype tubes based on this concept. A schematic illustration of the prototype design is shown. Optical and thermal performance, for several parameters, are measured. The performance curve shows efficiencies greater than 40% across the full range of temperature.

Authors:
; ; ;
Publication Date:
Research Org.:
The Enrico Fermi Institute, The University of Chicago, Chicago, Illinois
OSTI Identifier:
5285071
Report Number(s):
CONF-820217-
Journal ID: CODEN: ENTED
DOE Contract Number:  
AC04-78CS05350
Resource Type:
Conference
Journal Name:
Energy Technol. (Wash., D.C.); (United States)
Additional Journal Information:
Journal Volume: 9; Conference: 9. energy technology conference, Washington, DC, USA, 16 Feb 1982
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; EVACUATED TUBE COLLECTORS; DESIGN; FABRICATION; PERFORMANCE TESTING; THERMAL EFFICIENCY; COMPOUND PARABOLIC CONCENTRATORS; SOLAR REFLECTORS; VACUUM SYSTEMS; EFFICIENCY; EQUIPMENT; EVACUATED COLLECTORS; SOLAR COLLECTORS; SOLAR CONCENTRATORS; SOLAR EQUIPMENT; TESTING; 141000* - Solar Collectors & Concentrators

Citation Formats

Winston, R, O'Gollagher, J J, Peek, S C, and Snail, K. High performance solar collector amenable to mass production. United States: N. p., 1982. Web.
Winston, R, O'Gollagher, J J, Peek, S C, & Snail, K. High performance solar collector amenable to mass production. United States.
Winston, R, O'Gollagher, J J, Peek, S C, and Snail, K. Tue . "High performance solar collector amenable to mass production". United States.
@article{osti_5285071,
title = {High performance solar collector amenable to mass production},
author = {Winston, R and O'Gollagher, J J and Peek, S C and Snail, K},
abstractNote = {The high temperature thermal performance of a mass producible evacuated tube solar collector (ETC) has been significantly improved by shaping the outer glass envelope into the profile of a nonimaging Compound Parabolic Concentrator (CPC). Placing the reflector surface in a vacuum eliminates degradation of the mirror's reflectance. The transparent part of the glass vacuum also functions as a window and thus eliminates the need for an external cover glazing. This paper describes the design, fabrication, and preliminary test results for a panel of prototype tubes based on this concept. A schematic illustration of the prototype design is shown. Optical and thermal performance, for several parameters, are measured. The performance curve shows efficiencies greater than 40% across the full range of temperature.},
doi = {},
journal = {Energy Technol. (Wash., D.C.); (United States)},
number = ,
volume = 9,
place = {United States},
year = {1982},
month = {6}
}

Conference:
Other availability
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