Imperial College London
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Dr Andrew J Haslam

Faculty of Engineering, Department of Chemical Engineering

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 5618a.haslam CV

 
 
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Location

 

408Roderic Hill BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{van:2018,
author = {van, Kleef LMT and Oyewunmi, OA and Harraz, AA and Haslam, AJ and Markides, CN},
publisher = {ECOS},
title = {Case studies in computer-aided molecular design (CAMD) of low- and medium-grade waste-heat recovery ORC systems},
url = {http://hdl.handle.net/10044/1/62184},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Organic  Rankine  cycle  (ORC)  engines are  suitable  for  theconversion  oflow-grade  heat  into useful power. While numerous substances are available asORC working-fluid candidates, computer-aided molecular design (CAMD) techniques allow the rigorous selection of an optimal working fluid during system optimisation. The aim of  this present study  is  to  extend  an  existing  CAMD-ORC  framework  [1,2] by  incorporating,  in  addition  to thermodynamic  performance  objectives,  economic  objectives  when  determining  the  optimal systemdesign, while maintaining the facility  of selecting optimal  working fluids. The SAFT-γ Mie equation of state is used to predictthethermodynamic  properties  of theworking  fluids(here,  hydrocarbons)that  are relevant  to  the systems’economic appraisalsand critical/transport properties are estimated using empirical group-contribution methods.  System  investment  costs  are  estimated  with  equipment  cost  correlations  for  the  key  system components, andthe  stochastic  NSGA-II  solver  is  used  for system optimisation.  From  a  set  of  NLP optimisations,  it  is  concluded  that  the  optimal  molecular  size  of  the  working  fluid  is  linked  to  the  heat-source temperature. The optimal specific investment cost (SIC) values were £10,120/kW and£4,040/kW when using heat-source  inlet  temperatures  of  150°Cand250°C (representative  of  low-and  medium-gradeheat) respectively, andthe corresponding optimal working fluids were propane, 2-butane and 2-heptene.
AU  - van,Kleef LMT
AU  - Oyewunmi,OA
AU  - Harraz,AA
AU  - Haslam,AJ
AU  - Markides,CN
PB  - ECOS
PY  - 2018///
TI  - Case studies in computer-aided molecular design (CAMD) of low- and medium-grade waste-heat recovery ORC systems
UR  - http://hdl.handle.net/10044/1/62184
ER  -
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