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Status
Electronic Resource
Call number
Publication
SAND Report: SAND74-0124, August 1974.
Collection
Language
Library's review
ABSTRACT:
One of the primary distinctions among parabolic cylinder solar collectors is the focal length of the reflector. For a given collector width, this focal length is directly related to the rim angle. Previous studies have used different criteria to optimize collector designs. This study
One of the primary distinctions among parabolic cylinder solar collectors is the focal length of the reflector. For a given collector width, this focal length is directly related to the rim angle. Previous studies have used different criteria to optimize collector designs. This study
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considers in detail the effects of varying the receiver design with focal length. As the rim angle is decreased, an increasing portion of the receiver and its envelope receives little or no reflected solar flux, and this portion may be designed to minimize thermal losses. The result is a design which is not symmetric about the receiver axis. The purpose of this analysis is to examine the performance of such an asymmetric receiver design and to determine the optimum rim angle. The results of the study show that, for the receiver configuration and operational conditions described, the optimum receiver has a 90° rim angle. The impact of varying a number of design parameters is also evaluated. Show Less