Diurnal Thermal Energy Storage For Cogeneration Applications
DOI:
https://doi.org/10.13052/dgaej2156-3306.1226Abstract
Thermal energy storage can help cogeneration meet the chal-
lenges of the 1990s by increasing the flexibility and performance of
cogeneration facilities . Thermal energy storage also allows a cogenera-
tion facility to provide dispatchable electric power while providing a
constant thermal load.
The first of two studies reported here focused on the relative
performance and economic benefits of incorporating a diurnal TES
system with a simple-cycle gas turbine cogeneration system to produce
dispatchable power during peak- and/or intermediate -demand periods.
The r esults showed that the oil/rock storage system for TES was the
most attractive option for the assumed thermal load quality .
The second study evaluated the cost of power produced by a
combined-cycle cogeneration plant integrated with thermal energy
storage (CClr ES/Cogen ). The results indicate relatively poor economic
prospects for int egrating TES with a combined-cycle cogeneration
power plant. However, system design optimization and reductions in
storage media costs might improve the economics, perhaps enough to
make the CClrES/Cogen an attractive option for incremental peak
power production.
In addition to the economic considerations, environmental factors
due to the use of thermal energy storage with conventional cogenera-
tion syst ems are also reported .
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