Harnessing Ocean Thermal Energy from Offshore Locations in Pakistan Using an Organic Rankine Cycle †

Muhammad Haroon, Abubakr Ayub, Nadeem Ahmed Sheikh, Muhammad Ahmed, Al Bara Shalaby

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Abstract

The temperature gradient of the top and bottom layers of sea water can be employed for power generation through ocean thermal energy conversion cycles (OTEC). In this thermodynamic study, an organic Rankine cycle is used to convert the ocean thermal energy of the Arabian sea into useful electrical power. A comparative investigation is carried out between R152a and R1234yf working fluids. Sensitivity analysis is performed at varying condenser saturation temperatures and evaporator saturation temperatures. For the R152a OTEC cycle, 2.8% thermal efficiency, 47.9% exergy efficiency and 9064 W turbine work are obtained at the optimum point. Similarly, for the R1234yf working fluid in the OTEC cycle, 2.8% thermal efficiency, 46.9% exergy efficiency and 4818 W turbine work are obtained at the optimum point.

Original languageEnglish
Article number24
JournalEngineering Proceedings
Volume23
Issue number1
DOIs
Publication statusPublished - 21 Sept 2022
Externally publishedYes
EventThe 2nd International Conference on Advances in Mechanical Engineering: ICAME-22 - Islamabad, Pakistan
Duration: 25 Aug 202225 Aug 2022

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© 2022 by the authors.

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