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{Markides:2015:10.1063/1.4906709,
author = {Markides, CN and Smith, TCB},
doi = {10.1063/1.4906709},
journal = {AIP Conference Proceedings},
title = {A dynamic model for the optimization of oscillatory low grade heat engines},
url = {http://dx.doi.org/10.1063/1.4906709},
volume = {1642},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The efficiency of a thermodynamic system is a key quantity on which its usefulness and wider application relies. This is especially true for a device that operates with marginal energy sources and close to ambient temperatures. Various definitions of efficiency are available, each of which reveals a certain performance characteristic of a device. Of these, some consider only the thermodynamic cycle undergone by the working fluid, whereas others contain additional information, including relevant internal components of the device that are not part of the thermodynamic cycle. Yet others attempt to factor out the conditions of the surroundings with which the device is interfacing thermally during operation. In this paper we present a simple approach for the modeling of complex oscillatory thermal-fluid systems capable of converting low grade heat into useful work. We apply the approach to the NIFTE, a novel low temperature difference heat utilization technology currently under development. We use the results from the model to calculate various efficiencies and comment on the usefulness of the different definitions in revealing performance characteristics. We show that the approach can be applied to make design optimization decisions, and suggest features for optimal efficiency of the NIFTE.
AU  - Markides,CN
AU  - Smith,TCB
DO  - 10.1063/1.4906709
PY  - 2015///
SN  - 1551-7616
TI  - A dynamic model for the optimization of oscillatory low grade heat engines
T2  - AIP Conference Proceedings
UR  - http://dx.doi.org/10.1063/1.4906709
UR  - http://hdl.handle.net/10044/1/31778
VL  - 1642
ER  -
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