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

@article{Wang:2021:10.1016/j.enconman.2021.114618,
author = {Wang, Y and Song, J and Chatzopoulou, MA and Sunny, N and Simpson, MC and Wang, J and Markides, CN},
doi = {10.1016/j.enconman.2021.114618},
journal = {Energy Conversion and Management},
pages = {1--19},
title = {A holistic thermoeconomic assessment of small-scale, distributed solar organic Rankine cycle (ΟRC) systems: Comprehensive comparison of configurations, component and working fluid selection},
url = {http://dx.doi.org/10.1016/j.enconman.2021.114618},
volume = {248},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this paper, results from comprehensive thermoeconomic assessments of small-scale solar organic Rankine cycle (ORC) systems are presented based on weather data in London, UK, which is taken as representative of a temperate climate with modest temperature changes, mild winters and moderate summers. The assessments consider a range of: (i) solar collector types (flat-plate, evacuated-tube, and evacuated flat-plate collectors); (ii) power cycle configurations (basic/recuperative, partial/full evaporating, and subcritical/transcritical cycles); (iii) expander types (scroll, screw, and piston) and designs; and (iv) a set of suitable working fluids. All possible solar-ORC system designs are optimised by considering simultaneously key parameters in the solar field and in the power cycle in order to obtain the highest electricity generation, from which the best-performing systems are identified. Selected designs are then subjected to detailed, annual simulations considering the systems’ operation, explicitly considering off-design performance under actual varying weather conditions. The results indicate that, among all investigated designs, solar-ORC systems based on the subcritical recuperative ORC (SRORC), evacuated flat-plate collectors (EFPCs), a piston expander, and isobutane as the working fluid outperforms all the other system designs on thermodynamic performance, whilst having the highest annual electricity generation of 1,100 kW·h/year (73 kW·h/year/m2) and an overall thermal efficiency of 5.5%. This system also leads to the best economic performance with a levelised cost of energy (LCOE) of ~1 $/kW·h. Apart from the specific weather data used for these detailed system simulations, this study also proceeds to consider a wider range of climates associated with other global regions by varying the solar resource available to the system. Interestingly, it is found that the optimal solar-ORC system design remains unchanged for different cond
AU  - Wang,Y
AU  - Song,J
AU  - Chatzopoulou,MA
AU  - Sunny,N
AU  - Simpson,MC
AU  - Wang,J
AU  - Markides,CN
DO  - 10.1016/j.enconman.2021.114618
EP  - 19
PY  - 2021///
SN  - 0196-8904
SP  - 1
TI  - A holistic thermoeconomic assessment of small-scale, distributed solar organic Rankine cycle (ΟRC) systems: Comprehensive comparison of configurations, component and working fluid selection
T2  - Energy Conversion and Management
UR  - http://dx.doi.org/10.1016/j.enconman.2021.114618
UR  - https://www.sciencedirect.com/science/article/pii/S0196890421007949?via%3Dihub
UR  - http://hdl.handle.net/10044/1/92380
VL  - 248
ER  -
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