Thermodynamic and Economic Analysis of a Hybrid Ocean Thermal Energy Conversion/Photovoltaic System with Hydrogen-Based Energy Storage System

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Thermodynamic and Economic Analysis of a Hybrid Ocean Thermal Energy Conversion/Photovoltaic System with Hydrogen-Based Energy Storage System. / Khosravi, Ali; Syri, Sanna; El Haj Assad, Mamdouh; Malekan, Mohammad.

In: Energy, Vol. 172, 01.04.2019, p. 304-319.

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@article{c616361dbd5a463ca7ea2f244a274705,
title = "Thermodynamic and Economic Analysis of a Hybrid Ocean Thermal Energy Conversion/Photovoltaic System with Hydrogen-Based Energy Storage System",
abstract = "The purpose of this study is to define and assess a new, renewable and sustainable energy supply system for islands and remote area where ocean thermal energy conversion (OTEC)/photovoltaic with hydrogen storage system is proposed. Components of this system are a turbine, generator, evaporator, condenser, pumps, photovoltaic panels, electrolyzer, hydrogen tanks, fuel cell and converter. To evaluate the proposed hybrid system, energy, exergy and economic analysis are employed. For OTEC, an optimization algorithm is applied to find the optimum working fluid (R134A, R407C, R410A, R717, R404A, and R423A), evaporation and condensation temperatures, and cold and warm seawater temperature differences between the inlet and outlet of evaporator/condenser. The results demonstrate that the maximum specific power of OTEC was achieved to be 0.3622 kW/m 2 for R717 and 0.3294 kW/m 2 for R423A working fluids. The overall energy efficiency for the hybrid renewable energy system was obtained 3.318{\%}. The maximum energy loss was occurred by the turbine. The exergy efficiency of the hybrid system was obtained 18.35{\%} and the payback period of the proposed system was obtained around 8 years. The unit electricity cost for the system was achieved as 0.168 $/kWh which is valuable compared to 0.28 $/kWh of the previous system.",
keywords = "Ocean thermal energy conversion, Photovoltaicq, Energy-exergy analysis, Hydrogen storage system, Economic evaluation, Photovoltaic",
author = "Ali Khosravi and Sanna Syri and {El Haj Assad}, Mamdouh and Mohammad Malekan",
year = "2019",
month = "4",
day = "1",
doi = "10.1016/j.energy.2019.01.100",
language = "English",
volume = "172",
pages = "304--319",
journal = "Energy (the International Journal)",
issn = "0360-5442",

}

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TY - JOUR

T1 - Thermodynamic and Economic Analysis of a Hybrid Ocean Thermal Energy Conversion/Photovoltaic System with Hydrogen-Based Energy Storage System

AU - Khosravi, Ali

AU - Syri, Sanna

AU - El Haj Assad, Mamdouh

AU - Malekan, Mohammad

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The purpose of this study is to define and assess a new, renewable and sustainable energy supply system for islands and remote area where ocean thermal energy conversion (OTEC)/photovoltaic with hydrogen storage system is proposed. Components of this system are a turbine, generator, evaporator, condenser, pumps, photovoltaic panels, electrolyzer, hydrogen tanks, fuel cell and converter. To evaluate the proposed hybrid system, energy, exergy and economic analysis are employed. For OTEC, an optimization algorithm is applied to find the optimum working fluid (R134A, R407C, R410A, R717, R404A, and R423A), evaporation and condensation temperatures, and cold and warm seawater temperature differences between the inlet and outlet of evaporator/condenser. The results demonstrate that the maximum specific power of OTEC was achieved to be 0.3622 kW/m 2 for R717 and 0.3294 kW/m 2 for R423A working fluids. The overall energy efficiency for the hybrid renewable energy system was obtained 3.318%. The maximum energy loss was occurred by the turbine. The exergy efficiency of the hybrid system was obtained 18.35% and the payback period of the proposed system was obtained around 8 years. The unit electricity cost for the system was achieved as 0.168 $/kWh which is valuable compared to 0.28 $/kWh of the previous system.

AB - The purpose of this study is to define and assess a new, renewable and sustainable energy supply system for islands and remote area where ocean thermal energy conversion (OTEC)/photovoltaic with hydrogen storage system is proposed. Components of this system are a turbine, generator, evaporator, condenser, pumps, photovoltaic panels, electrolyzer, hydrogen tanks, fuel cell and converter. To evaluate the proposed hybrid system, energy, exergy and economic analysis are employed. For OTEC, an optimization algorithm is applied to find the optimum working fluid (R134A, R407C, R410A, R717, R404A, and R423A), evaporation and condensation temperatures, and cold and warm seawater temperature differences between the inlet and outlet of evaporator/condenser. The results demonstrate that the maximum specific power of OTEC was achieved to be 0.3622 kW/m 2 for R717 and 0.3294 kW/m 2 for R423A working fluids. The overall energy efficiency for the hybrid renewable energy system was obtained 3.318%. The maximum energy loss was occurred by the turbine. The exergy efficiency of the hybrid system was obtained 18.35% and the payback period of the proposed system was obtained around 8 years. The unit electricity cost for the system was achieved as 0.168 $/kWh which is valuable compared to 0.28 $/kWh of the previous system.

KW - Ocean thermal energy conversion

KW - Photovoltaicq

KW - Energy-exergy analysis

KW - Hydrogen storage system

KW - Economic evaluation

KW - Photovoltaic

UR - http://www.scopus.com/inward/record.url?scp=85061340704&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2019.01.100

DO - 10.1016/j.energy.2019.01.100

M3 - Article

VL - 172

SP - 304

EP - 319

JO - Energy (the International Journal)

JF - Energy (the International Journal)

SN - 0360-5442

ER -

ID: 29787691