Preliminary evaluation of a new IC expander/compressor engine for use in compressed air energy storage plants. Final report, FY 1977
A preliminary evaluation of a new reciprocating engine for CAES power plants is presented. One possible engine configuration is a reversible expander/compressor engine. Power generation results from engine operation as an internal combustion expander, while compression is accomplished using the same engine operating as a reciprocating compressor. Another engine configuration is a hybrid engine which uses an internal combustion reciprocating engine as a high-pressure expander and a gas turbine as a low-pressure expander. Compression is accomplished using either separate turbocompressors or operating the high-pressure expander as a reversible reciprocating compressor in series with a low-pressure turbocompressor. The engine lends itself to modular construction and it can be constructed by modifying an available high-production diesel engine, thus taking advantage of reduced costs from mass produced engines and components. The disadvantages of the engine are a slightly higher heat rate, which is due to higher (instantaneous) combustion temperatures, and the need for an engine development program. It is shown that the expected heat rate using the new engine is about 4800 Btu/kWh compared to 4100 to 4500 Btu/kWh using conventional turbines.The difference between these heat rates is rather insignificant compared to heat rates of 11,000 to 15,000 Btu/kWh which are typical of gas turbine peaker units. The design and performance of the engine is similar to that of diesel engines and reciprocating compressors.The difference between these heat rates is rather insignificant compared to heat rates of 11,000 to 15,000 Btu/kWh which are typical of gas turbine peaker units. The design and performance of the engine is similar to that of diesel engines and reciprocating compressors.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Division of Energy Storage Systems
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6632098
- Report Number(s):
- ANL/EES-TM-3
- Country of Publication:
- United States
- Language:
- English
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33 ADVANCED PROPULSION SYSTEMS
COMPRESSED AIR STORAGE POWER PLANTS
COMPRESSORS
INTERNAL COMBUSTION ENGINES
COST
PERFORMANCE
DIESEL ENGINES
HYBRID SYSTEMS
ENGINES
PEAKING POWER PLANTS
POWER PLANTS
250200* - Energy Storage- Compressed & Liquified Gas
330102 - Internal Combustion Engines- Diesel