| abstract |
Two-stage tube trailer operating method and system for reducing fuel refueling cost A method and system for operating a fuel refueling station tube trailer and compressor to reduce hydrogen fuel refueling costs are provided. The hydrogen fuel refueling station includes a two-stage fuel supply of a pressure vessel in a fuel re-supply station tube trailer, wherein the first and second stages of the pressure vessel include one or more pressure vessels connected to each other. A separate control unit is coupled to the first and second stages of the pressure vessel, and each of the control units is coupled to the compressor. The compressor is connected to the high-pressure buffer reservoir by a separate control unit. Pressure is monitored at each step in operation. Hydrogen is selectively incorporated between the first stage, second stage pressure vessel and high pressure buffer of the pressure vessel bank. Depending on the monitored pressure, one of the first stage, second stage pressure vessel bank and high pressure buffer of the pressure vessel is used to fuel the vehicle. |