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Regenerative Fuel Cell

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Regenerative Fuel Cell ( regenerative-fuel-cell )

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Table 3.26: Estimated specifications of the Alfa Nero Name Type Overall Length Beam Main Engine Power (MCR) Fuel Capacity Maximum Speed Available Volume Available Mass Alfa Nero Yacht 82m 14m 6.9 MW 294 m3 20 knots 529 m3 281 MT Table 3.27: Route information used for the Alfa Nero. Departure Port Arrival Port Distance Total Voyage Time Average Speed (SOA) Average Shaft Power Energy Used Antibes Antibes 64 nm 10 hr 6.4 knots 229 kW 2.29 MWh The route studied was a notional 10 hour cruise originating in Antibes, France and returning to the same port with characteristics shown in Table 3.27. The distance and average speed were estimated. Average shaft power and energy used were obtained using Equation 3.2 and Equation 3.3, respectively. Table 3.28 shows the resulting characteristics of battery and fuel cell power systems (including hydrogen fuel) for a single trip, and how many one-way trips over the route could be accomplished with each solution. It is a low-power, low-energy voyage but the high power capability installed on-board makes the fuel cells the dominant contributor to mass and volume for the single trip. This allows the battery to be the preferred solution if this vessel stays close to shore and can be recharged after the equivalent of four similar trips. However if the vessel needs Table 3.28: Characteristics of zero emission power systems needed on the Alfa Nero for a single trip on the route studied. Fuel Cell Power (MW) 6.9 Mass (MT) (281 avail) 57.4 - 58.8 61.0 Fuel cell with liquid hydrogen Fuel cell with 350 bar hydrogen gas Battery Battery Capacity (MWh) - 4.58 Hydrogen Fuel (kg) 153 - Volume (m3) (529 avail) Possible One-Way Trips 107 28 4 49 127 138 70.4 Single Trip

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