1315792
doi
10.5281/zenodo.1315792
oai:zenodo.org:1315792
Alvaro Diez
Comparative Study of Sub-Critical and Supercritical ORC Applications for Exhaust Waste Heat Recovery
Buket Boz
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Internal combustion engine
organic rankine cycle
waste heat recovery
working fluids.
Waste heat recovery by means of Organic Rankine<br>
Cycle is a promising technology for the recovery of engine<br>
exhaust heat. However, it is complex to find out the optimum<br>
cycle conditions with appropriate working fluids to match exhaust<br>
gas waste heat due to its high temperature. Hence, this paper<br>
focuses on comparing sub-critical and supercritical ORC conditions<br>
with eight working fluids on a combined diesel engine-ORC<br>
system. The model employs two ORC designs, Regenerative-ORC<br>
and Pre-Heating-Regenerative-ORC respectively. The thermodynamic<br>
calculations rely on the first and second law of thermodynamics,<br>
thermal efficiency and exergy destruction factors are the fundamental<br>
parameters evaluated. Additionally, in this study, environmental<br>
and safety, GWP (Global Warming Potential) and ODP (Ozone<br>
Depletion Potential), characteristic of the refrigerants are taken<br>
into consideration as evaluation criteria to define the optimal ORC<br>
configuration and conditions. Consequently, the studys outcomes<br>
reveal that supercritical ORCs with alkane and siloxane are more<br>
suitable for high temperature exhaust waste heat recovery in contrast<br>
to sub-critical conditions.
Zenodo
2018-01-01
info:eu-repo/semantics/article
1315791
10008559
1579541824.463635
268103
md5:d11512769c1641c2d330385850846dc9
https://zenodo.org/records/1315792/files/10008559.pdf
public
10.5281/zenodo.1315791
isVersionOf
doi
International Journal of Electrical, Electronic and Communication Sciences
11.0
2
2018-01-01