| abstract |
The compressed natural gas storage and transportation system contains a supplier and a destination, and a vehicle, each of which contains pressurized cylinders. The pressurized cylinders and the gas contained therein can be kept cold by a carbon dioxide refrigeration unit. Hydraulic fluid (and / or nitrogen) ballast can be used to fill pressurized cylinders, since pressurized cylinders are emptied to maintain pressurized cylinders substantially isobaric, which reduces cylinder fatigue and prolongs cylinder life ... The pressurized cylinders can be hybrid cylinders with carbon fiber and glass fiber wraps. The dip tubes can extend into pressurized cylinders to selectively push / pump gas from the top / to the top of the cylinders or hydraulic fluid from the bottom / bottom of the cylinders. Impact baffles are disposed adjacent the dip tubes within the cylinders to prevent fluid induced erosion of the cylinder walls. |