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Research Papers: Alternative Energy Sources

Renewable Hydrogen Production Using Sailing Ships

[+] Author and Article Information
Max F. Platzer

Mechanical and Aerospace Engineering,
Innovative Power Generation Systems (iPGS),
University of California,
Davis, CA 95616
e-mail: maxmillian.platzer@gmail.com

Nesrin Sarigul-Klijn

Mechanical and Aerospace Engineering,
Innovative Power Generation Systems (iPGS),
University of California,
Davis, CA 95616
e-mail: nsarigulklijn@ucdavis.edu

J. Young

The University of New South Wales,
Canberra ACT 2600, Australia
e-mail: J.Young@adfa.edu.au

M. A. Ashraf

The University of New South Wales,
Canberra ACT 2600, Australia
e-mail: M.ashraf@adfa.edu.au

J. C. S. Lai

The University of New South Wales,
Canberra ACT 2600, Australia
e-mail: j.tai@adfa.edu.au

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 1, 2012; final manuscript received December 4, 2013; published online February 20, 2014. Assoc. Editor: Laura Schaefer.

J. Energy Resour. Technol 136(2), 021203 (Feb 20, 2014) (5 pages) Paper No: JERT-12-1201; doi: 10.1115/1.4026200 History: Received September 01, 2012; Revised December 04, 2013

Vast ocean areas of planet Earth are exposed year-round to strong wind currents. We suggest that this untapped ocean wind power be exploited by the use of sailing ships. The availability of constantly updated meteorological information makes it possible to operate the ships in ocean areas with optimum wind power so that the propulsive ship power can be converted into electric power by means of ship-mounted hydro-power generators. Their electric power output then is fed into ship-mounted electrolyzers to convert sea water into hydrogen and oxygen. In this paper, we estimate the ship size, sail area, and generator size to produce a 1.5 MW electrical power output. We describe a new oscillating-wing hydro-power generator and present results of model tests obtained in a towing tank. Navier-Stokes computations are presented to provide an estimate of the power extraction efficiency and drag coefficient of such a generator which depends on a range of parameters such as foil maximum pitch angles, plunge amplitude, phase between pitch and plunge and load. Also, we present a discussion of the feasibility of sea water electrolysis and of the reconversion of hydrogen and oxygen into electricity by means of shore-based hydrogen-oxygen power plants.

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References

Figures

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Fig. 1

Generator foil area versus ship speed

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Fig. 2

Sail area versus ship speed

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Fig. 3

Mechanically controlled generator

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Fig. 6

Generator drag versus water speed

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Fig. 7

Estimated and measured steady drag

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Fig. 8

Contours of power extraction efficiency versus foil pitch angle and nondimensional load

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Fig. 9

Contours of drag coefficient versus foil pitch angle and nondimensional load

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