(84b) Low-Pressure Storage of Methane on High-Surface-Area Carbon for Natural Gas Vehicles: Record Performance in the Lab and on a 40-Liter Prototype Tank
AIChE Spring Meeting and Global Congress on Process Safety
2017
2017 Spring Meeting and 13th Global Congress on Process Safety
Emerging Technologies in Clean Energy
Alternative Cleaner Fuels
Tuesday, March 28, 2017 - 10:45am to 11:15am
Under contract #500-08-022 from the California Energy Commission (2011-14), the University of Missouri has developed monolithic nanoporous carbon with a storage capacity of 0.13 kg methane/liter carbon and 0.26 kg methane/kg carbon at 35 bar and 25 ºC [1, 2]. This is 4.5 times what a tank without carbon without carbon would hold at 35 bar and is world record volumetric storage capacity for adsorbed natural gas (ANG). The technology, showcased on a 40-liter conformable ANG tank, offers (i) reduced fueling costs because of low pressure (7 times lower than CNG, 250 bar); (ii) a tank that weighs 50% less than a CNG tank and has a 20% lower total volume; (iii) a rectangular tank geometry that can be integrated into the chassis of a vehicle, making NG vehicles an attractive alternative to gasoline and diesel vehicles. Data to be presented ranges from density of adsorbed methane films, 0.39-0.41 g/ml, comparable to the density of liquid methane at â161 ºC, to flow rates and pressure/temperature profiles for fast/slow fill and various discharge modes.
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