Thermal energy storage with liquid-liquid systems
- Polytechnic Univ., Brooklyn, NY (United States)
The use of liquid-liquid mixtures for heat and cool storage applications has been investigated. Suitable mixtures exhibit large changes in the heat of mixing above and below the critical solution temperature of the system. Analytical procedures have been utilized to determine potential energy storage capabilities of systems with upper or lower critical solution temperatures. It has been found that aqueous systems with lower critical solution temperatures in a suitable range can result in large increases in the effective heat capacity in the critical region. For cool storage with a system of this type, the cooling process results in a transformation from two liquid phases to a single phase. Heats of mixing have been measured with a flow calorimeter system for a number of potential mixtures, and the results are summarized.
- Research Organization:
- USDOE Assistant Secretary for Conservation and Renewable Energy, Washington, DC (United States). Office of Energy Management; Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI ID:
- 106796
- Report Number(s):
- CONF-890351-; ON: DE95016394; TRN: 95:006984-0009
- Resource Relation:
- Conference: Thermal energy storage program review, New Orleans, LA (United States), 15-17 Mar 1989; Other Information: PBD: Mar 1989; Related Information: Is Part Of U.S. Department of Energy thermal energy storage research activities review: 1989 Proceedings; Hoffman, H.W. [ed.] [PAI Corp., Oak Ridge, TN (United States)]; Tomlinson, J.J. [ed.] [Oak Ridge National Lab., TN (United States)]; PB: 357 p.
- Country of Publication:
- United States
- Language:
- English
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