Fuel gas distribution method where residual fuel gas in a mobile fuel gas storage vessel being transported by a transport vehicle is transferred from the mobile fuel gas storage vessel to the transport vehicle for generating power. The fuel gas may be natural gas or hydrogen. The transport vehicle may be a fuel cell vehicle.

Fuel gas distribution method where residual fuel gas in a mobile fuel gas storage vessel being transported by a transport vehicle is transferred from the mobile fuel gas storage vessel to the transport vehicle for generating power. The fuel gas may be natural gas or hydrogen. The transport vehicle may be a fuel cell vehicle.

Devices, systems, and methods for pressure-regulated melting are disclosed. A vessel includes a solids inlet, a fluids outlet, a cavity, and a melting device. Solids enter the vessel through the solids inlet. The cavity has an internal pressure. The solids inlet has a reducer that produces a first back pressure on the solids in the solids inlet. The melting device heats the vessel, the contents of the vessel, or a combination thereof. The heating rate of the melting device is matched to the feed rate of the solids such that the solids are melted directly to a product liquid at the internal pressure. The product liquid passes through the fluids outlet through a restriction that maintains the internal pressure in the cavity.

Devices, systems, and methods for pressure-regulated melting are disclosed. A vessel includes a solids inlet, a fluids outlet, a cavity, and a warm fluids inlet. Solids enter the vessel through the solids inlet. The cavity has an internal pressure. Warm fluids enter the vessel through the warm fluids inlet. The warm liquid being directed into the vessel provides an inlet pressure that produces a backpressure in the solids inlet. A feed rate of the warm liquid is matched to a feed rate of the solids such that the solids are melted directly to a product liquid at the internal pressure. The product liquid is passed out of the vessel through a restriction that maintains the internal pressure in the cavity.