Imperial College London

ProfessorChristosMarkides

Faculty of EngineeringDepartment 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{Kirmse:2016,
author = {Kirmse, CJW and Oyewunmi, OA and Haslam, AJ and Markides, CN},
title = {A thermo-economic assessment and comparison of the Up-THERM heat converter and an organic Rankine cycle engine},
url = {http://hdl.handle.net/10044/1/32536},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - In this paper we present a thermodynamic and economic comparison of a recently proposed two-phasethermofluidic oscillator known as the Up-THERM heat converter and the more established organic Rankine cycle(ORC) engine, when converting heat at temperatures below 150 °C using the refrigerant R-227ea as the workingfluid. The Up-THERM heat converter is being considered as a possible prime mover for small- to medium-scalecombined heat and power (CHP) applications. Using suitable thermodynamic models of both systems, it is foundthat the power output and thermal efficiencies of a pre-specified Up-THERM design are generally lower thanthose of an equivalent ORC engine. The Up-THERM, however, also demonstrates higher exergy efficiencies andis associated with lower capital costs, as expected owing to its simple construction and use of fewer and morebasic components. Interestingly, the specific costs (per rated kW) of the ORC engine are lower than those of theUp-THERM converter at lower heat source temperatures, specifically below 130 °C, whereas the Up-THERMbecomes a more cost effective alternative (in terms of the specific cost) to the ORC engine at higher temperatures.
AU - Kirmse,CJW
AU - Oyewunmi,OA
AU - Haslam,AJ
AU - Markides,CN
PY - 2016///
TI - A thermo-economic assessment and comparison of the Up-THERM heat converter and an organic Rankine cycle engine
UR - http://hdl.handle.net/10044/1/32536
ER -