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Research Papers

Performance Assessment of a Novel Solar and Ocean Thermal Energy Conversion Based Multigeneration System for Coastal Areas

[+] Author and Article Information
Pouria Ahmadi

Faculty of Engineering and Applied Science,
University of Ontario Institute
of Technology (UOIT),
2000 Simcoe Street North,
Oshawa, ON L1H 7K4, Canada
e-mail: Pouria.Ahmadi@uoit.ca

Ibrahim Dincer

Faculty of Engineering
and Applied Science,
University of Ontario Institute
of Technology (UOIT),
2000 Simcoe Street North,
Oshawa, ON L1H 7K4, Canada
e-mail: Ibrahim.Dincer@uoit.ca

Marc A. Rosen

Faculty of Engineering
and Applied Science,
University of Ontario Institute
of Technology (UOIT),
2000 Simcoe Street North,
Oshawa, ON L1H 7K4, Canada
e-mail: Marc.Rosen@uoit.ca

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received December 13, 2013; final manuscript received August 4, 2014; published online September 3, 2014. Assoc. Editor: Werner Platzer.

J. Sol. Energy Eng 137(1), 011013 (Sep 03, 2014) (12 pages) Paper No: SOL-13-1371; doi: 10.1115/1.4028241 History: Received December 13, 2013; Revised August 04, 2014

A new multigeneration system based on an ocean thermal energy conversion (OTEC) system equipped with flat plate and PV/T solar collectors, a reverse osmosis (RO) desalination unit to produce fresh water, a single effect absorption chiller, and proton exchange membrane (PEM) electrolyzer is proposed and thermodynamically assessed. Both energy and exergy analyses are employed to determine the irreversibilities in each component and assess the system performance. A parametric study is performed to investigate the effects of varying design parameters and operating conditions on the system energy and exergy efficiencies. In addition, an economic assessment of the multigeneration system is performed, and the potential reduction in total cost rate when the system shifts from power generation to multigeneration are investigated.

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References

Figures

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Fig. 1

Schematic of renewable based multigeneration energy system for the provision of heating, cooling, electricity, hydrogen, fresh water, and hot water

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Fig. 2

T-s diagram of the OTEC cycle

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Fig. 3

Effect of varying inlet air mass flow rate and PV/T length L on exergy efficiency of the PV/T collector

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Fig. 4

Effect of varying PV/T length L and width b on electricity generated by the PV/T collector

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Fig. 5

Effect of varying PV/T length and width on electricity generated by the PV/T collector

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Fig. 6

Exergy destruction rates for the integrated OTEC and solar-based multigeneration system and its components

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Fig. 7

Dimensionless exergy destruction ratio for the multigeneration system and its components

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Fig. 8

Effect of varying warm surface seawater mass flow rate on the exergy efficiency and the exergy destruction rate of the system

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Fig. 9

Effect of varying warm surface seawater mass flow rate on the net power output and total cost rate of the system

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Fig. 10

Effect of varying solar radiation intensity on the exergy efficiency of the system for various condenser temperatures

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Fig. 11

Effect of varying condenser temperature on the net power output the system

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Fig. 12

Effect of varying solar radiation intensity on the total exergy destruction rate of the system for various condenser temperatures

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Fig. 13

Effect of varying solar radiation intensity on the total cost rate of the system

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Fig. 14

Effect of varying PP temperature on the exergy efficiency and the total exergy destruction rate of the system

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Fig. 15

Effect of varying PP temperature on the hydrogen production rate and the total cost rate of the system

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Fig. 16

Effect of varying PV/T length and inlet air mass flow rate on the exergy efficiency of the system

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Fig. 17

Effect of varying PV/T length and inlet air mass flow rate on cooling load of the system

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Fig. 18

Effect of varying PV/T length and inlet air mass flow rate on total cost rate of the system

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