Optimization of Thin-Film Transparent Plastic Honeycomb Covered Flat-Plate Solar Collectors. Phase 2.
Abstract
An analytical and experimental program was conducted to develop an optimized transparent plastic honeycomb for use in a flat-plate solar collector system. Analysis was performed on both low- and high-temperature candidate plastics from the point of view of ease of manufacture, performance, and total cost. Detailed testing was performed on two candidate honeycomb materials - Mylar and Lexan - using Glass, Tedlar, and Teflon as the cover materials. Although a Teflon system gave a high collector performance, difficulty in manufacture and high material costs ruled out the possible economical use of the system at present. The Lexan/Glass and Lexan/Tedlar system of honeycomb/cover gave similar results which were higher than those for the Mylar systems. A thermal protection technique was developed for the 'coolant stagnation' situation, in which the honeycomb was raised above the absorber plate surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 25, 1978
- Accession Number
- ADA305310
Entities
People
- K. N. Marshall
- M. Mccargo
- R. Dammann
- R. Wedel
- S. A. Greenberg
Organizations
- Lockheed Martin Missiles and Space