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

doi:10.3390/engproc2022023024

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 language	English
Article number	24
Journal	Engineering Proceedings
Volume	23
Issue number	1
DOIs	https://doi.org/10.3390/engproc2022023024
Publication status	Published - 21 Sept 2022
Externally published	Yes
Event	The 2nd International Conference on Advances in Mechanical Engineering: ICAME-22 - Islamabad, Pakistan Duration: 25 Aug 2022 → 25 Aug 2022

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© 2022 by the authors.

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title = "Harnessing Ocean Thermal Energy from Offshore Locations in Pakistan Using an Organic Rankine Cycle †",

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.",

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AU - Haroon, Muhammad

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AU - Sheikh, Nadeem Ahmed

AU - Ahmed, Muhammad

AU - Shalaby, Al Bara

PY - 2022/9/21

Y1 - 2022/9/21

N2 - 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.

AB - 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.

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

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