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Title: Theoretical Performance Limits of an Isobaric Hybrid Compressed Air Energy Storage System

Abstract

Furthermore, the desire to increase power production through renewable sources introduces a number of problems due to their inherent intermittency. One solution is to incorporate energy storage systems as a means of managing the intermittent energy and increasing the utilization of renewable sources. A novel hybrid thermal and compressed air energy storage (HT-CAES) system is presented which mitigates the shortcomings of the otherwise attractive conventional compressed air energy storage (CAES) systems and its derivatives, such as strict geological locations, low energy density, and the production of greenhouse gas emissions. The HT-CAES system is investigated, and the thermodynamic efficiency limits within which it operates have been drawn. The thermodynamic models considered assume a constant pressure cavern. It is shown that under this assumption the cavern acts just as a delay time in the operation of the plant, whereas an adiabatic constant volume cavern changes the quality of energy through the cavern. The efficiency of the HT-CAES system is compared with its Brayton cycle counterpart, in the case of pure thermal energy storage (TES). It is shown that the efficiency of the HT-CAES plant is generally not bound by the Carnot efficiency and always higher than that of the Brayton cycle, exceptmore » for when the heat losses following compression rise above a critical level. The results of this paper demonstrate that the HT-CAES system has the potential of increasing the efficiency of a pure TES system executed through a Brayton cycle at the expense of an air storage medium.« less

Authors:
 [1];  [2];  [2]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
California Energy Commission (CEC); USDOE
OSTI Identifier:
1462183
Report Number(s):
NREL/JA-5500-72024
Journal ID: ISSN 0195-0738
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Energy Resources Technology
Additional Journal Information:
Journal Volume: 140; Journal Issue: 10; Journal ID: ISSN 0195-0738
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; compressed air energy; thermal energy storage; hybrid compressed air energy storage; energy storage; renewable energy; grid storage

Citation Formats

Houssainy, Sammy, Janbozorgi, Mohammad, and Kavehpour, Pirouz. Theoretical Performance Limits of an Isobaric Hybrid Compressed Air Energy Storage System. United States: N. p., 2018. Web. doi:10.1115/1.4040060.
Houssainy, Sammy, Janbozorgi, Mohammad, & Kavehpour, Pirouz. Theoretical Performance Limits of an Isobaric Hybrid Compressed Air Energy Storage System. United States. doi:10.1115/1.4040060.
Houssainy, Sammy, Janbozorgi, Mohammad, and Kavehpour, Pirouz. Tue . "Theoretical Performance Limits of an Isobaric Hybrid Compressed Air Energy Storage System". United States. doi:10.1115/1.4040060. https://www.osti.gov/servlets/purl/1462183.
@article{osti_1462183,
title = {Theoretical Performance Limits of an Isobaric Hybrid Compressed Air Energy Storage System},
author = {Houssainy, Sammy and Janbozorgi, Mohammad and Kavehpour, Pirouz},
abstractNote = {Furthermore, the desire to increase power production through renewable sources introduces a number of problems due to their inherent intermittency. One solution is to incorporate energy storage systems as a means of managing the intermittent energy and increasing the utilization of renewable sources. A novel hybrid thermal and compressed air energy storage (HT-CAES) system is presented which mitigates the shortcomings of the otherwise attractive conventional compressed air energy storage (CAES) systems and its derivatives, such as strict geological locations, low energy density, and the production of greenhouse gas emissions. The HT-CAES system is investigated, and the thermodynamic efficiency limits within which it operates have been drawn. The thermodynamic models considered assume a constant pressure cavern. It is shown that under this assumption the cavern acts just as a delay time in the operation of the plant, whereas an adiabatic constant volume cavern changes the quality of energy through the cavern. The efficiency of the HT-CAES system is compared with its Brayton cycle counterpart, in the case of pure thermal energy storage (TES). It is shown that the efficiency of the HT-CAES plant is generally not bound by the Carnot efficiency and always higher than that of the Brayton cycle, except for when the heat losses following compression rise above a critical level. The results of this paper demonstrate that the HT-CAES system has the potential of increasing the efficiency of a pure TES system executed through a Brayton cycle at the expense of an air storage medium.},
doi = {10.1115/1.4040060},
journal = {Journal of Energy Resources Technology},
number = 10,
volume = 140,
place = {United States},
year = {2018},
month = {5}
}

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