- Author
- Hunt, B. J. | Richtmyer, T. E. | Hill, J. E.
- Title
- Evaluation of ASHRAE Standard 94-77 for Testing Water Tanks for Thermal Storage.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Energy, Washington, DC
- Report
- NBSIR 78-1548, October 1978,
- Distribution
- Available from National Technical Information Service
- Keywords
- water tanks; standards; tests; heat storage; evaluation; solar heating; thermal efficiency; heat loss
- Identifiers
- thermal energy storage equipment
- Abstract
- The National Bureau of Standards proposed a standard test procedure for rating thermal storage devices, in mid-1975. Early in 1977, the American Society of Heating, Refrigerating and Air-conditioning Engineers (ASHRAE) adopted ASHRAE Standard 94-77 Method of Testing Thermal Storage Devices Based on Thermal Performance, which is based substantially on the NBS procedure. In order to evaluate the Standard, NBS has conducted an experiment in which a 1.9 cu m (500 gal) water tank, built as part of a residential solar heating and cooling system, was tested in accordance with this Standard. A description of the test apparatus, test procedure, and detailed test results are given. It was found that there were no major problems encountered in using the Standard for this kind of thermal storage device. In addition, suggestions are made for minor modifications in the Standard.