An apparatus and process for cooling a pressurized gas for feeding to one or more vehicle fuel tanks for fueling a vehicle can be configured so that a pressurized gas (e.g. hydrogen or natural gas) for fueling one or more vehicles can be cooled prior to dispensing via a heat transfer fluid that cools the pressurized gas and transfers the heat of the pressurized gas toward fluid of a heat sink source. The transfer of the heat to the heat sink source fluid can occur via a refrigerant in some embodiments.

In one embodiment, systems and methods include an electrospray device for atomizing fluids comprising a body defining a resonant microwave cavity, wherein the body comprises a radio frequency inlet configured to inject a radio frequency signal received from a power source into the resonant microwave cavity, wherein the resonant microwave cavity is configured to to amplify a voltage of the radio frequency signal. The device further comprises a field concentrating pole disposed within the resonant microwave cavity configured to concentrate the amplified voltage at a first end of the field concentrating pole to form an electric field. The device further comprises a nozzle disposed at the first end of the field concentrating pole and a fluid supply line configured to provide a fluid disposed within the field concentrating pole and fluidly connected to the nozzle, wherein the fluid supply line is fluidly connected to a fluid source.

A gaseous fuel supply system for a clean combustion engine of a vehicle having a vehicle cooling system. The supply system comprises: a gaseous fuel tank storing pressurized gaseous fuel; at least a first supply line arranged to supply pressurized gaseous fuel from the gaseous fuel tank to the clean combustion engine; at least a first heat exchanging component arranged in the first supply line. The first heat exchanging component is arranged to transfer heat between a cooling fluid of the vehicle cooling system and the pressurized gaseous fuel in the first supply line.