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

Title: Design of the support structure, drive pedestal, and controls for a solar concentrator

Abstract

The glass/metal McDonnell-Douglas dish is the state-of-the-art of parabolic dish concentrators. Because of the perceived high production cost of this concentrator, the Department of Energy's Solar Thermal Program is developing stretch-membrane technology for large (75 kWt) solar concentrators for integration with receivers and engines in 25 kWe dish-Stirling systems. The objective of this development effort is to reduce the cost of the concentrator while maintaining the high levels of performance characteristic of glass-metal dishes. Under contract to Sandia National Laboratories, Science Applications International Corporation, Solar Kinetics Inc. and WG Associates are developing a faceted stretched-membrane heliostat technology. This design will result in a low-risk, near-term concentrator for dish-Stirling systems. WG Associates has designed the support structure, drives and tracking controls for this dish. The structure is configured to support 12 stretched-membrane, 3.5-meter diameter facets in a shaped dish configuration. The dish design is sized to power a dish-Stirling system capable of producing 25 kW (electric). In the design of the structure, trade-off studies were conducted to determine the best'' facet arrangement, dish contour, dish focal length, tracking control and walk-off protection. As part of the design, in-depth analyses were performed to evaluate pointing accuracy, compliance with AISC steel design codes,more » and the economics of fabrication and installation. Detailed fabrication and installation drawings were produced, and initial production cost estimates for the dish were developed. These issues, and the final dish design, are presented in this report. 7 refs., 33 figs., 18 tabs.« less

Authors:
; ;  [1]
  1. (WG Associates, Dallas, TX (United States))
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States); WG Associates, Dallas, TX (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5301520
Report Number(s):
SAND-91-7007
ON: DE92000604
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SOLAR CONCENTRATORS; DESIGN; CONTROL EQUIPMENT; DIMENSIONS; MECHANICAL STRUCTURES; MEMBRANES; SOLAR THERMAL CONVERSION; SOLAR TRACKING SYSTEMS; CONVERSION; ENERGY CONVERSION; EQUIPMENT; HELIOSTATS; SOLAR CELL ARRAYS; SOLAR COLLECTORS; SOLAR ENERGY CONVERSION; SOLAR EQUIPMENT; SOLAR TRACKING; 141000* - Solar Collectors & Concentrators; 140700 - Solar Thermal Power Systems

Citation Formats

Goldberg, V.R., Ford, J.L., and Anderson, A.E.. Design of the support structure, drive pedestal, and controls for a solar concentrator. United States: N. p., 1991. Web. doi:10.2172/5301520.
Goldberg, V.R., Ford, J.L., & Anderson, A.E.. Design of the support structure, drive pedestal, and controls for a solar concentrator. United States. doi:10.2172/5301520.
Goldberg, V.R., Ford, J.L., and Anderson, A.E.. Thu . "Design of the support structure, drive pedestal, and controls for a solar concentrator". United States. doi:10.2172/5301520. https://www.osti.gov/servlets/purl/5301520.
@article{osti_5301520,
title = {Design of the support structure, drive pedestal, and controls for a solar concentrator},
author = {Goldberg, V.R. and Ford, J.L. and Anderson, A.E.},
abstractNote = {The glass/metal McDonnell-Douglas dish is the state-of-the-art of parabolic dish concentrators. Because of the perceived high production cost of this concentrator, the Department of Energy's Solar Thermal Program is developing stretch-membrane technology for large (75 kWt) solar concentrators for integration with receivers and engines in 25 kWe dish-Stirling systems. The objective of this development effort is to reduce the cost of the concentrator while maintaining the high levels of performance characteristic of glass-metal dishes. Under contract to Sandia National Laboratories, Science Applications International Corporation, Solar Kinetics Inc. and WG Associates are developing a faceted stretched-membrane heliostat technology. This design will result in a low-risk, near-term concentrator for dish-Stirling systems. WG Associates has designed the support structure, drives and tracking controls for this dish. The structure is configured to support 12 stretched-membrane, 3.5-meter diameter facets in a shaped dish configuration. The dish design is sized to power a dish-Stirling system capable of producing 25 kW (electric). In the design of the structure, trade-off studies were conducted to determine the best'' facet arrangement, dish contour, dish focal length, tracking control and walk-off protection. As part of the design, in-depth analyses were performed to evaluate pointing accuracy, compliance with AISC steel design codes, and the economics of fabrication and installation. Detailed fabrication and installation drawings were produced, and initial production cost estimates for the dish were developed. These issues, and the final dish design, are presented in this report. 7 refs., 33 figs., 18 tabs.},
doi = {10.2172/5301520},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1991},
month = {Thu Aug 01 00:00:00 EDT 1991}
}

Technical Report:

Save / Share: