Survey and evaluation of current design of evacuated collectors. Final technical report
The general development of these collectors, is described and a description of numerous evacuated collectors is given which vary from collectors that have been widely used in various applications to others which are still being developed in the laboratory. A table summarizing all of the available collectors, along with their characteristics, is presented. There are four evacuated collectors which have been tested, used in demonstration sites, and developed for the market. These collectors are described in detail, and they are compared in performance and cost with a well-engineered, double glazed, selectively coated, flat plate collector. A rather simple model system of about 2000 ft/sup 2/ of collector area for each of the four evacuated collectors and the flat plate collector is described, along with the support structure and the piping for each. Details of the cost are presented in order to compare collector costs with component costs. All of the available efficiency curves of collectors were plotted for comparison with the efficiency curve of a good, flat plate collector. To show the extent of use of evacuated collectors, a list according to manufacturers and to location of all of the sites at which these collectors are being used is presented.
- Research Organization:
- Trident Engineering Associates, Inc., Annapolis, MD (USA)
- Sponsoring Organization:
- USDOE Office of Solar Energy
- DOE Contract Number:
- EM-78-C-04-5350
- OSTI ID:
- 5696155
- Report Number(s):
- ALO-5350-1
- Country of Publication:
- United States
- Language:
- English
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