APC 400kW1MW User Manual download pdf (Page 30)

Figure 3-5 Three APC Fuel Cells Installed in a Server Rack [F]

APC’s InfraStruXure

with Integrated Fuel Cells system is aimed at providing

emergency power for data centers where generators are impractical, such as high rise

buildings. The maximum start up time of APC’s PEMFC is very quick at just 20 seconds [36, p.

1-2].

While APC’s fuel cell is operating, it charges the battery of an internal UPS. A single 10

kW fuel cell module requires a total of 13 kW. The UPS batteries are charged with 3 kW and

the remaining 10 kW provides power to the IT equipment. One bottle of hydrogen (10 Nm

) can

provide a 10 kW fuel cell with 79 minutes of emergency power. A 30 kW configuration with 10

bottles of hydrogen can provide 4 hours and 24 minutes of runtime [36, p. 1-2].

This emergency power fuel cell system requires air and water management, too. Chilled

water is required to cool the system as well as an air handling system to exhaust hot air and

hydrogen byproducts from the fuel cell process. A drain line, typically one-inch in diameter,

connected to the building’s sanitary waste piping is needed in order to dispose of the water

produced by the fuel cell. Because the rack mounted fuel cells will be used infrequently and

they have low operating temperatures, they will not generate enough waste heat to be used in a

CHP application [36, p. 1-2; 10, p. 1809].

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APC 400kW1MW User Manual Page 30