Spray-cooling for wind-based compressed air energy storage

Chao Qin, Eric Loth, Perry Y Li, Terrence W Simon, James D Van De Ven, Stephen E. Crane, Amir Pourmousa

Research output: Contribution to conferencePaper

Abstract

Energy systems can benefit from compact and efficient energy storage technologies. In particular, energy storage is well suited for off-shore wind turbines whose output energy variability is typically inconsistent with grid power demand. Furthermore, accommodating peak power generation can lead to over-sizing of electrical generator and transmission lines. It would be more efficient and economical if off-shore wind turbines could be sized for average power and could produce this power on a continuous basis. This would allow the traditional wind turbine generator and transmission lines can be replaced by a smaller, lower-cost, constant-speed generator and a transmission system sized for average power output. This study analyzes a compressor to build and maintain compressed air energy storage for a 35-MPa accumulator sized for a 5 MW off-shore wind turbine. The compressor employs a liquid piston for compression and water spray for heat transfer to achieve near isothermal behavior and efficiency. The overall compression is achieved in three stages with pressure ratios of 10:1, 7:1, and 5:1 under 1-Hz working frequency. The results indicate that droplet surface area plays a critical role in system performance and that high mass loading and small drops can increase overall system efficiency by as much as 50%, as compared to conventional air compressor systems.

Original languageEnglish (US)
StatePublished - Sep 11 2013
Event11th International Energy Conversion Engineering Conference, IECEC 2013 - San Jose, CA, United States
Duration: Jul 14 2013Jul 17 2013

Other

Other11th International Energy Conversion Engineering Conference, IECEC 2013
CountryUnited States
CitySan Jose, CA
Period7/14/137/17/13

Fingerprint

Offshore wind turbines
Compressors
Cooling
Energy storage
Electric lines
Turbogenerators
Pistons
Wind turbines
Power generation
Compaction
Heat transfer
Liquids
Compressed air energy storage
Costs
Water

Cite this

Qin, C., Loth, E., Li, P. Y., Simon, T. W., Van De Ven, J. D., Crane, S. E., & Pourmousa, A. (2013). Spray-cooling for wind-based compressed air energy storage. Paper presented at 11th International Energy Conversion Engineering Conference, IECEC 2013, San Jose, CA, United States.

Spray-cooling for wind-based compressed air energy storage. / Qin, Chao; Loth, Eric; Li, Perry Y; Simon, Terrence W; Van De Ven, James D; Crane, Stephen E.; Pourmousa, Amir.

2013. Paper presented at 11th International Energy Conversion Engineering Conference, IECEC 2013, San Jose, CA, United States.

Research output: Contribution to conferencePaper

Qin, C, Loth, E, Li, PY, Simon, TW, Van De Ven, JD, Crane, SE & Pourmousa, A 2013, 'Spray-cooling for wind-based compressed air energy storage' Paper presented at 11th International Energy Conversion Engineering Conference, IECEC 2013, San Jose, CA, United States, 7/14/13 - 7/17/13, .
Qin C, Loth E, Li PY, Simon TW, Van De Ven JD, Crane SE et al. Spray-cooling for wind-based compressed air energy storage. 2013. Paper presented at 11th International Energy Conversion Engineering Conference, IECEC 2013, San Jose, CA, United States.
Qin, Chao ; Loth, Eric ; Li, Perry Y ; Simon, Terrence W ; Van De Ven, James D ; Crane, Stephen E. ; Pourmousa, Amir. / Spray-cooling for wind-based compressed air energy storage. Paper presented at 11th International Energy Conversion Engineering Conference, IECEC 2013, San Jose, CA, United States.
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