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Hydrogen-powered lawn mower

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Published in International Journal of Hydrogen Energy. 1993, vol. 18, no. 4, p. 345-348
Abstract We present a hydrogen-powered lawn mower which was adapted from a commercial model running on gasoline. The necessary modifications include adjustments to the carburettor and the installation of a hydrogen reservoir containing about 5 kg of a metal hydride powder. Hydrogen is obtained by desorption of that powder at ambient temperature and 2–20 bar pressure. The reservoir is rechargable at a hydrogen pressure of about 25 bar within less than 1 h. One charge lasts about 40 min. corresponding to about 800 m2 of cut lawn. The engine shows a reduced noise level and no tendency to backfiring. The prototype has run successfully for more than 1 year.
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YVON, Klaus, LORENZONI, Jean-Luc. Hydrogen-powered lawn mower. In: International Journal of Hydrogen Energy, 1993, vol. 18, n° 4, p. 345-348. https://archive-ouverte.unige.ch/unige:85268

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