Methods and systems for reducing pressure of natural gas and methods and systems of delivering natural gas

A method of reducing a pressure of natural gas, the method comprising:

• directing a natural gas stream into at least one vortex regulator comprising an inlet configured to receive the natural gas, a vortex tube and an outlet configured to release the natural gas;
• reducing a pressure and a temperature of the natural gas stream using the at least one vortex regulator;
• heating the natural gas stream from the at least one vortex regulator using a heat exchanger in fluid communication with the at least one vortex regulator;
• directing the natural gas stream from the heat exchanger to a pressure-reducing regulator to further reduce the pressure thereof;
• and
• controlling the pressure of the pressure-reducing regulator using the pressure of the natural gas stream, the pressure-reducing regulator connected by a pressure line to the natural gas stream upstream of the at least one vortex regulator.

A device for delivering natural gas, comprising:

• a support;
• at least one storage vessel for containing the natural gas in a compressed form disposed on the support;
• a first regulator valve in fluid communication with the at least one storage vessel and controlling a flow of the natural gas;
• at least one vortex regulator in fluid communication with the at least one storage vessel;
• a first heat exchanger in fluid communication with the at least one vortex regulator, the first heat exchanger configured for exchanging heat between the natural gas and a fluid in communication with a surface of the first heat exchanger;
• a pressure regulator in fluid communication with the heat exchanger, the pressure regulator controlling the pressure of the natural gas;
• and
• a second heat exchanger in fluid communication with the pressure regulator, the second heat exchanger configured to exchange heat between the natural gas and a fluid in communication with a surface of the second heat exchanger;
• and
• a bypass line connected upstream of the at least one vortex regulator and downstream of the at least one vortex regulator to allow natural gas to bypass the at least one vortex regulator.