skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

Results are presented from a parametric study of the Sandia Laboratories' second-generation 2-m, 90/sup 0/ parabolic-cylindrical solar collector design. A computer simulation was developed to provide cumulative all-day performance results or instantaneous solar-noon results for three annular solar receiver assemblies: 2.223-, 2.54-, and 3.175-cm-o.d. tubes with concentric glass jackets. Representative clear spring, summer, and winter conditions for Albuquerque, NM, were modeled. Design problems considered in the analysis included misalignment of the receiver assembly from the focal line, reflector trough tracking bias, variation in receiver tube operating temperature, and variation in the reflector trough one-dimensional slope errors and two-dimensional mirror errors. Changes in collector material radiative properties and wind effects are also summarized, and comparative performance results for evacuated versus nonevacuated annular receivers are given. Summarized performance results for all studies are provided graphically. For operating receiver-tube temperatures < 475 K, the 3.175-cm receiver tube provides the best overall collector performance results. For higher operating temperatures where detrimental receiver heat losses become more significant, the smaller 2.54-cm tube is more effective for solar energy collection.

Authors:
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
OSTI Identifier:
5907679
Report Number(s):
SAND-79-1026
DOE Contract Number:  
EY-76-C-04-0789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PARABOLIC TROUGH COLLECTORS; COMPUTERIZED SIMULATION; PERFORMANCE; SOLAR ABSORBERS; ALIGNMENT; ANNULAR SPACE; DESIGN; ERRORS; GEOMETRY; INSOLATION; SEASONAL VARIATIONS; SOLAR TRACKING; WEATHER; CONCENTRATING COLLECTORS; CONFIGURATION; MATHEMATICS; PARABOLIC COLLECTORS; SIMULATION; SOLAR COLLECTORS; VARIATIONS; CSP; Concentrating Solar Power; 141000* - Solar Collectors & Concentrators

Citation Formats

Ratzel, A. C. Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors. United States: N. p., 1979. Web. doi:10.2172/5907679.
Ratzel, A. C. Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors. United States. https://doi.org/10.2172/5907679
Ratzel, A. C. 1979. "Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors". United States. https://doi.org/10.2172/5907679. https://www.osti.gov/servlets/purl/5907679.
@article{osti_5907679,
title = {Receiver assembly design studies for 2-m 90/sup 0/ parabolic-cylindrical solar collectors},
author = {Ratzel, A. C.},
abstractNote = {Results are presented from a parametric study of the Sandia Laboratories' second-generation 2-m, 90/sup 0/ parabolic-cylindrical solar collector design. A computer simulation was developed to provide cumulative all-day performance results or instantaneous solar-noon results for three annular solar receiver assemblies: 2.223-, 2.54-, and 3.175-cm-o.d. tubes with concentric glass jackets. Representative clear spring, summer, and winter conditions for Albuquerque, NM, were modeled. Design problems considered in the analysis included misalignment of the receiver assembly from the focal line, reflector trough tracking bias, variation in receiver tube operating temperature, and variation in the reflector trough one-dimensional slope errors and two-dimensional mirror errors. Changes in collector material radiative properties and wind effects are also summarized, and comparative performance results for evacuated versus nonevacuated annular receivers are given. Summarized performance results for all studies are provided graphically. For operating receiver-tube temperatures < 475 K, the 3.175-cm receiver tube provides the best overall collector performance results. For higher operating temperatures where detrimental receiver heat losses become more significant, the smaller 2.54-cm tube is more effective for solar energy collection.},
doi = {10.2172/5907679},
url = {https://www.osti.gov/biblio/5907679}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 1979},
month = {Sat Sep 01 00:00:00 EDT 1979}
}