Development of ammoniated salts thermochemical energy-storage systems. Phase I initial assessments. Progress report, March-September 1976. Final report
This program is developing an energy storage system that accepts thermal energy at high temperatures, stores it at near ambient temperature, and recovers the energy on demand at a temperature near the original high temperature. The energy is stored as both sensible heat and chemical energy. The system is completely passive, having no moving parts, and can be used over a wide range of source temperatures. The concept consists of the storage and subsequent abstraction of heats of reaction from a pair of ammoniated chemical systems near equilibrium. By shifting the equilibrium in the forward or reverse direction, the heat of reaction is stored and recovered as desired. This energy storage system could have a role in providing peaking energy to a peaking turbine, for residential energy storage and to store and recover waste heat from an industrial complex. The end objective of the work was to demonstrate the concept's applicability to power plant thermal storage systems. Chemical kinetics data were obtained for candidate salts. A bench scale model was designed, built and tested to obtain engineering data required for design of a larger system. A 4 MW-hr subscale research experiment was planned. The results for each phase of the program are presented. It was concluded that ammoniated salt energy storage systems would be usable in electrical steam power systems for feedwater preheat and for latent heat storage. An upper temperature limitation of 700/sup 0/F for the selected ammoniated salts would preclude their use above that temperature. However, there are other salts, which have not yet been investigated, which may prove suitable for use at higher temperatures. (LCL)
- Research Organization:
- Martin Marietta Corp., Denver, CO (USA)
- DOE Contract Number:
- AC03-76SF90359
- OSTI ID:
- 6296265
- Report Number(s):
- MCR-76-562
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
25 ENERGY STORAGE
AMMONIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
LATENT HEAT STORAGE
FEASIBILITY STUDIES
MATERIALS
SENSIBLE HEAT STORAGE
SOLAR POWER PLANTS
OFF-PEAK ENERGY STORAGE
THERMAL POWER PLANTS
CALCIUM CHLORIDES
COST
IRON CHLORIDES
MAGNESIUM CHLORIDES
PERFORMANCE
THERMAL ENERGY STORAGE EQUIPMENT
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
ENERGY STORAGE
EQUIPMENT
HALIDES
HALOGEN COMPOUNDS
HEAT STORAGE
IRON COMPOUNDS
MAGNESIUM COMPOUNDS
PHYSICAL PROPERTIES
POWER PLANTS
STORAGE
TRANSITION ELEMENT COMPOUNDS
200107* - Fossil-Fueled Power Plants- Off-Peak Energy Storage- (1980-)
140700 - Solar Thermal Power Systems
250600 - Energy Storage- Thermal