- Author
-
Jones, D. E.
|
Hill, J. E.
- Title
- Testing of Pebble-Bed and Phase-Change Thermal Energy Storage Devices According to ASHRAE Standard 94-77. Final Report.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Energy, Washington, DC
- Report
-
NBSIR 79-1737
May 1979
- Distribution
- Available from National Technical Information Service
- Keywords
-
heat storage; energy storage; phase transformations; sodium sulfates; hydrates
|
phase transformations
- Identifiers
- thermal energy storage equipment; pebble beds; latent heat storage
- Abstract
- The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) has recently adopted ASHRAE Standard 94-77--Methods of Testing Thermal Storage Devices Based on Thermal Performance. Experiments have been completed at the National Bureau of Standards in which a 7 cu m (250 cu ft) pebble-bed and a similarly-sized 264 MJ (250,000 Btu) phase-change unit using sodium sulfate decahydrate, both using air as the transfer fluid, were tested in accordance with this Standard. A description of the test procedure, test apparatus, and detailed test results is given. Some problems were encountered in using the Standard for these kinds of thermal energy storage devices, and modifications to the Standard are recommended based on these experiments.