Determination of the energy storage capacity of the Diels-Alder reaction between methylfuran and maleic anhydride as applied to storing solar energy
The heat storage capacity of the Diels-Alder reaction between 2-methylfuran and maleic anhydride is calculated using reaction parameters obtained from solution calorimetry. An equilibrium constant of .614 1/mol and a heat of reaction of 14.33 kcal/mole were obtained from experiments at 45/sup 0/C. A reaction ..delta..C/sub p/ of -21.8 cal/mole was calculated from heat capacity information at 25/sup 0/C. From these parameters, a solution initially seven molar in methylfuran and maleic anhydride was found to have a maximum apparent volumetric heat capacity of about 1.85 times that of water. This maximum occurs at about 335/sup 0/K. Typical active solar energy schemes operate between 300 and 400/sup 0/K. When cycled between these temperatures, this system has an overall apparent heat capacity about 1.5 times that of water. The apparent heat capacity increases as the temperature range is narrowed.
- Research Organization:
- Missouri Univ., Rolla (USA)
- DOE Contract Number:
- FG47-79R701026
- OSTI ID:
- 5097329
- Report Number(s):
- DOE/R7/01026-T1; ON: DE84007744
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
142000* -- Solar Energy-- Heat Storage-- (1980-)
25 ENERGY STORAGE
250800 -- Energy Storage-- Chemical
ANHYDRIDES
CALORIMETRY
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DICARBOXYLIC ACIDS
DIELS-ALDER REACTION
DISPERSIONS
ENERGY STORAGE
EQUILIBRIUM
FURANS
HEAT STORAGE
HETEROCYCLIC COMPOUNDS
MALEIC ACID
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLVENTS
SPECIFIC HEAT
STORAGE
THERMOCHEMICAL HEAT STORAGE
THERMODYNAMIC PROPERTIES
THERMODYNAMICS