Solar thermal storage using the heat of adsorption
The storage of solar thermal energy has been a subject of extensive study for many years. Various storage concepts have been extensively investigated. However, little research has been done on energy storage in the heat-of-adsorption of chemical compounds. Zeolite is, perhaps, the only substance that has been studied for its heat-of-adsorption properties. A recent proposal utilizes the hygroscopic properties of sodium sulfide for thermal storage. Sodium sulfide has a storage capacity of 3600 kJ per kilogram. The system is economically desirable as sodium sulfide costs a mere $0.27 per kilogram. Experimental research has been continuing for a year on the feasibility of the system. The performance of the model has been reasonably close to the expected level. It is believed that further work can raise the storage temperatures to levels suitable for space heating, and other low temperature applications. This system has two problems: the salt has to be under vacuum and the chemical odor in the vacuum pump exhaust. A new conceptual design has been developed that eliminates the problem of odor and the need for a vacuum pump.
- Research Organization:
- Syracuse University, Dept. of Mechanical and Aerospace Eng., Syracuse, NY
- OSTI ID:
- 5279797
- Report Number(s):
- CONF-821101-
- Journal Information:
- Am. Soc. Mech. Eng., (Pap.); (United States), Vol. 82-WA/SOL-4; Conference: ASME winter annual meeting (Engineering applications of laser velocimetry/published in ASME Jr. Fluid Engineering), Phoenix, AZ, USA, 14 Nov 1982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
SODIUM SULFIDES
THERMOCHEMICAL HEAT STORAGE
SOLAR HEATING SYSTEMS
ADSORPTION HEAT
DESIGN
ECONOMICS
FEASIBILITY STUDIES
HYGROSCOPICITY
LOW TEMPERATURE
ODOR
SALTS
SPACE HEATING
VACUUM PUMPS
ZEOLITES
ALKALI METAL COMPOUNDS
CHALCOGENIDES
ENERGY STORAGE
ENERGY SYSTEMS
ENTHALPY
EQUIPMENT
HEAT STORAGE
HEATING
HEATING SYSTEMS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LABORATORY EQUIPMENT
MATERIALS
MINERALS
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
PUMPS
SODIUM COMPOUNDS
SOLAR EQUIPMENT
STORAGE
SULFIDES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
142000* - Solar Energy- Heat Storage- (1980-)
250600 - Energy Storage- Thermal