Next Article in Journal
Quantum Flows for Secret Key Distribution in the Presence of the Photon Number Splitting Attack
Previous Article in Journal
Information-Geometric Markov Chain Monte Carlo Methods Using Diffusions
Article Menu

Export Article

Open AccessArticle
Entropy 2014, 16(6), 3103-3120; doi:10.3390/e16063103

Analysis and Optimization of a Compressed Air Energy Storage—Combined Cycle System

1
Key Lab of Education Ministry for Power Plant Equipments Conditions Monitoring and Fault Diagnosis, North China Electric Power University, Beijing 102206, China
2
Department of Mechanical and Aerospace Engineering, University of Missouri, E2412 Lafferre Hall, Columbia, MO 65211, USA
*
Author to whom correspondence should be addressed.
Received: 11 March 2014 / Revised: 25 May 2014 / Accepted: 28 May 2014 / Published: 4 June 2014
View Full-Text   |   Download PDF [408 KB, uploaded 24 February 2015]   |  

Abstract

Compressed air energy storage (CAES) is a commercial, utility-scale technology that provides long-duration energy storage with fast ramp rates and good part-load operation. It is a promising storage technology for balancing the large-scale penetration of renewable energies, such as wind and solar power, into electric grids. This study proposes a CAES-CC system, which is based on a conventional CAES combined with a steam turbine cycle by waste heat boiler. Simulation and thermodynamic analysis are carried out on the proposed CAES-CC system. The electricity and heating rates of the proposed CAES-CC system are lower than those of the conventional CAES by 0.127 kWh/kWh and 0.338 kWh/kWh, respectively, because the CAES-CC system recycles high-temperature turbine-exhausting air. The overall efficiency of the CAES-CC system is improved by approximately 10% compared with that of the conventional CAES. In the CAES-CC system, compressing intercooler heat can keep the steam turbine on hot standby, thus improving the flexibility of CAES-CC. This study brought about a new method for improving the efficiency of CAES and provided new thoughts for integrating CAES with other electricity-generating modes. View Full-Text
Keywords: compressed air energy storage; combined cycle (CC); process simulation; system optimization compressed air energy storage; combined cycle (CC); process simulation; system optimization
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Liu, W.; Liu, L.; Zhou, L.; Huang, J.; Zhang, Y.; Xu, G.; Yang, Y. Analysis and Optimization of a Compressed Air Energy Storage—Combined Cycle System. Entropy 2014, 16, 3103-3120.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top