Year 2017, Volume 20, Issue 4, Pages 229 - 237 2017-11-29

Deep Water Cooled ORC for Offshore Floating Oil Platform Applications

C. G. F. Do Val [1] , J. A. M. Silva [2] , S. Oliveira Jr. [3]

163 251

Due to global warming, environmental pollution and cost reduction, increasing efficiency of electricity conversion has become a key issue for the offshore market. This paper proposes an Organic Rankine Cycle (ORC), which uses heat waste from exhaust gases of an FPSO (Floating, Production, Storage and Offloading unit) as heating source, and deep ocean water as cooling source. A genetic algorithm optimization was conducted targeting maximization of net power output, by taking in to consideration of 23 working fluids. Expander inlet temperature and pressure were set as independent variables. The analysis encompasses subcritical or supercritical conditions and recuperation was included in a second version of the system as an option. The first configuration presented ethanol as optimal fluid, followed by toluene and the second configuration indicated cyclohexane followed by ethanol. Use of recuperation, when feasible, increased power output specially for cycles operating with dry and isentropic fluids, presenting an average contribution of 22.7%. Net power and efficiency results from ORC using deep sea water in condenser were presented and compared with ORC using shallow ocean water as cooling source and with Carnot efficiency operating under the same temperatures. Use of deep water raised net power output by 23.3% (cyclohexane recuperative ORC) and 12.5% (ethanol non-recuperative ORC) for the optimal configurations.


ORC; deep water; FPSO; power generation
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Journal Section Regular Original Research Article
Authors

Author: C. G. F. Do Val
Country: Brazil


Author: J. A. M. Silva
Country: Brazil


Author: S. Oliveira Jr.
Country: Brazil


Dates

Publication Date: November 29, 2017

Bibtex @research article { ijot359499, journal = {International Journal of Thermodynamics}, issn = {1301-9724}, eissn = {2146-1511}, address = {Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi}, year = {2017}, volume = {20}, pages = {229 - 237}, doi = {10.5541/eoguijt.359499}, title = {Deep Water Cooled ORC for Offshore Floating Oil Platform Applications}, key = {cite}, author = {Do Val, C. G. F. and Silva, J. A. M. and Oliveira Jr., S.} }
APA Do Val, C , Silva, J , Oliveira Jr., S . (2017). Deep Water Cooled ORC for Offshore Floating Oil Platform Applications. International Journal of Thermodynamics, 20 (4), 229-237. DOI: 10.5541/eoguijt.359499
MLA Do Val, C , Silva, J , Oliveira Jr., S . "Deep Water Cooled ORC for Offshore Floating Oil Platform Applications". International Journal of Thermodynamics 20 (2017): 229-237 <http://dergipark.org.tr/ijot/issue/32334/359499>
Chicago Do Val, C , Silva, J , Oliveira Jr., S . "Deep Water Cooled ORC for Offshore Floating Oil Platform Applications". International Journal of Thermodynamics 20 (2017): 229-237
RIS TY - JOUR T1 - Deep Water Cooled ORC for Offshore Floating Oil Platform Applications AU - C. G. F. Do Val , J. A. M. Silva , S. Oliveira Jr. Y1 - 2017 PY - 2017 N1 - doi: 10.5541/eoguijt.359499 DO - 10.5541/eoguijt.359499 T2 - International Journal of Thermodynamics JF - Journal JO - JOR SP - 229 EP - 237 VL - 20 IS - 4 SN - 1301-9724-2146-1511 M3 - doi: 10.5541/eoguijt.359499 UR - https://doi.org/10.5541/eoguijt.359499 Y2 - 2017 ER -
EndNote %0 International Journal of Thermodynamics Deep Water Cooled ORC for Offshore Floating Oil Platform Applications %A C. G. F. Do Val , J. A. M. Silva , S. Oliveira Jr. %T Deep Water Cooled ORC for Offshore Floating Oil Platform Applications %D 2017 %J International Journal of Thermodynamics %P 1301-9724-2146-1511 %V 20 %N 4 %R doi: 10.5541/eoguijt.359499 %U 10.5541/eoguijt.359499
ISNAD Do Val, C. G. F. , Silva, J. A. M. , Oliveira Jr., S. . "Deep Water Cooled ORC for Offshore Floating Oil Platform Applications". International Journal of Thermodynamics 20 / 4 (November 2017): 229-237. https://doi.org/10.5541/eoguijt.359499
AMA Do Val C , Silva J , Oliveira Jr. S . Deep Water Cooled ORC for Offshore Floating Oil Platform Applications. International Journal of Thermodynamics. 2017; 20(4): 229-237.
Vancouver Do Val C , Silva J , Oliveira Jr. S . Deep Water Cooled ORC for Offshore Floating Oil Platform Applications. International Journal of Thermodynamics. 2017; 20(4): 237-229.