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{Pantaleo:2019:10.1016/j.enconman.2019.112053,
author = {Pantaleo, A and Simpson, M and Rotolo, G and Distaso, E and Oyewunmi, O and Sapin, P and Depalma, P and Markides, C and Pantaleo, A and Simpson, M and Sapin, P and Oyewunmi, O and rotolo, G and distaso, E and depalma, P and Markides, C},
doi = {10.1016/j.enconman.2019.112053},
journal = {Energy Conversion and Management},
title = {Thermoeconomic optimisation of small-scale organic Rankine cycle systems based on screw vs. piston expander maps in waste heat recovery applications},
url = {http://dx.doi.org/10.1016/j.enconman.2019.112053},
volume = {200},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The high cost of organic Rankine  cycle  (ORC) systems is a  key barrier to their implementation in waste heat recovery (WHR) applications. In particular, the choice ofexpansion device has a significant influence  on  this  cost,  strongly  affecting  the  economic  viabilityof  an installation. In  this  work, numerical  simulations  and optimisation strategies are used to compare the  performance  and profitability  of small-scale ORC  systems  using reciprocating-piston orsingle/two-stage screw expanders whenre covering heat from  the exhaust  gases  of a  185-kWinternal  combustion  engine operating in baseload mode. The study goes beyond previous work by directly comparingthese small-scaleexpanders fora broad range of working fluids, and by exploring the sensitivity of project viability to key parameters such as electricity price and onsite heat demand.For the piston expander, a lumped-massmodel and optimisation based on artificial neural networks are used to generate performance maps, while performance and cost correlations from the literature are used for the screw expanders. The thermodynamic analysisshows that two-stage screw expanders typically deliver more power than either single-stage screw or piston expanders due to their higher conversion efficiencyat the required pressure ratios. The best fluids areacetone and ethanol, as these provide a compromise between the exergy  losses  in  the  condenser  and  in  the  evaporatorin  this  application. The  maximum  net  power output isfound to be 17.7kW, from an ORC engine operating withacetone anda two-stage screw expander. On  the  other  hand,  the thermoeconomic optimisation  shows  that reciprocating-piston expandersshow a  potential for lowerspecific  costs, and  sincesuchan expander technology is not mature, especially at these scales, this finding motivates further consideration of this component. A minimum  specific  investment  cost  of  1630€/kW is observed  for  an  ORC  engine  with  a  pisto
AU  - Pantaleo,A
AU  - Simpson,M
AU  - Rotolo,G
AU  - Distaso,E
AU  - Oyewunmi,O
AU  - Sapin,P
AU  - Depalma,P
AU  - Markides,C
AU  - Pantaleo,A
AU  - Simpson,M
AU  - Sapin,P
AU  - Oyewunmi,O
AU  - rotolo,G
AU  - distaso,E
AU  - depalma,P
AU  - Markides,C
DO  - 10.1016/j.enconman.2019.112053
PY  - 2019///
SN  - 0196-8904
TI  - Thermoeconomic optimisation of small-scale organic Rankine cycle systems based on screw vs. piston expander maps in waste heat recovery applications
T2  - Energy Conversion and Management
UR  - http://dx.doi.org/10.1016/j.enconman.2019.112053
UR  - http://hdl.handle.net/10044/1/73387
VL  - 200
ER  -
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