Imperial College London
Alternate

ProfessorChristosMarkides

Faculty of Engineering, Department of Chemical Engineering

Professor of Clean Energy Technologies
 
 
 
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Contact

 

+44 (0)20 7594 1601c.markides Website

 
 
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Location

 

404ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Jiangfeng:2022,
author = {Jiangfeng, G and Song, J and Pervunin, K and Markides, C},
pages = {525--530},
title = {Heat exchanger arrangements in supercritical CO2 Brayton cycle systems: an analysis based on the distribution coordination principle},
url = {http://hdl.handle.net/10044/1/99093},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Supercritical CO2 Brayton cycle systems have emerged as apromising option for power generation, in particular at lagerscales, where it is necessary to adopt series or parallel heatexchanger arrangements in order to achieve large amounts ofheat exchange. In this work, a variety of heat exchangerarrangement schemes (series, parallel, and hybrid) are proposedand explored in the context of supercritical CO2 Brayton cyclesystems. The results show that the heat load depends not only onthe values of key parameters (thermal conductance, temperaturedifference, etc.), but also on their distribution coordination.Moreover, the whole coordination can be improved via suitablyadjusting the flow fraction among the heat exchangers,eventually improving the overall heat load. An appropriateadjustment of the flow fraction in heat exchangers that are inseries/parallel is preferable to improving the match between thehot and cold fluids, leading to a decrease in the thermodynamicirreversibility. Taking the generally recognised supercritical CO2recompression Brayton cycle systems as a focal point for ouranalysis, it is found that the optimal split ratio ranges from 0.3 to0.5, which is in line with results reported in literature. Theoptimal split ratio improves the distribution coordination of theparameters in the low-temperature recuperator, eventuallyreducing the irreversible loss. The present work providesvaluable guidance to the design and optimisation of heatexchanger arrangements for supercritical CO2 Brayton cyclesystems as well as other relevant systems.
AU  - Jiangfeng,G
AU  - Song,J
AU  - Pervunin,K
AU  - Markides,C
EP  - 530
PY  - 2022///
SP  - 525
TI  - Heat exchanger arrangements in supercritical CO2 Brayton cycle systems: an analysis based on the distribution coordination principle
UR  - http://hdl.handle.net/10044/1/99093
ER  -
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