Imperial College London
Alternate

Paul Fennell

Faculty of Engineering, Department of Chemical Engineering

Professor of Clean Energy
 
 
 
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Contact

 

+44 (0)20 7594 6637p.fennell

 
 
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Location

 

228aBone BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bahzad:2022:10.1016/j.enconman.2022.115332,
author = {Bahzad, H and Fennell, P and Shah, N and Hallett, J and Ali, N},
doi = {10.1016/j.enconman.2022.115332},
journal = {Energy Conversion and Management},
pages = {1--23},
title = {Techno-economic assessment for a pumped thermal energy storage integrated with open cycle gas turbine and chemical looping technology},
url = {http://dx.doi.org/10.1016/j.enconman.2022.115332},
volume = {255},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Pumped thermal energy storage offers a high energy density, potentially resulting in a relatively low cost per unit of energy stored. In this study, two novel energy storage systems were developed. The first system was developed by integrating pumped thermal energy storage and chemical looping technologies, whereas the second was formed by merging the first system with an open cycle gas turbine. Both systems used an oxygen depleted stream as a working fluid and iron-based oxygen carriers from a chemical looping water splitting process storage material for the pumped thermal energy storage system. In addition, hydrogen from the chemical looping process was employed for the gas turbine in the second system. Both systems were evaluated thermodynamically via the determination of the roundtrip efficiency. The results presented here indicate that the roundtrip efficiency of both systems developed was 77%. Furthermore, the capital requirements, operating costs, and daily profits from electricity generation were calculated for both systems over several days within the year. The capital and operating costs for the several days that were simulated for the integrated pumped thermal energy storage system were lower than that of a gas turbine based system. Consequently, the daily profit was estimated and found to be between 4.9% and 72.9% higher for the integrated pumped storage relative to the gas turbine based system. Moreover, an economic sensitivity analysis was performed to identify the factors that strongly affect the daily profits of the gas turbine system relative to the pumped storage system. Based on the analysis, the optimal hydrogen fuel percentage fed to the open cycle gas turbine was calculated for the days simulated. Finally, the impact of % error on the estimated capital and fuel production costs on daily profits were investigated. The outcome revealed a higher impact of computational errors on the fuel costs relative to the costs of the capital.
AU  - Bahzad,H
AU  - Fennell,P
AU  - Shah,N
AU  - Hallett,J
AU  - Ali,N
DO  - 10.1016/j.enconman.2022.115332
EP  - 23
PY  - 2022///
SN  - 0196-8904
SP  - 1
TI  - Techno-economic assessment for a pumped thermal energy storage integrated with open cycle gas turbine and chemical looping technology
T2  - Energy Conversion and Management
UR  - http://dx.doi.org/10.1016/j.enconman.2022.115332
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000772627800002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0196890422001285?via%3Dihub
UR  - http://hdl.handle.net/10044/1/97885
VL  - 255
ER  -
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