Air conditioning system and transportation system including same

A transportation system, comprising:

• an electric motor;
• at least one element coupled to and configured to be driven by the electric motor in order to move the transportation system between an IDLING state corresponding to the transportation system being turned on and not moving, and an OPERATING state corresponding to the transportation system being turned on and moving;
• and
• air conditioning system, comprising:
• a rotation driving device,
• an energy storage device for powering both the rotation driving device and the electric motor,
• a generator electrically connected to the energy storage device, and
• a turboexpander, comprising:
• a drive shaft coupled to both the generator and the rotation driving device, and configured to be rotated by the rotation driving device,
• a compressor wheel coupled to the drive shaft and configured to receive first air and generate second air from the first air in a manner wherein the rotation driving device provides a source of kinetic energy to cause the compressor wheel to rotate and pressurize the first air, and
• an expander wheel coupled to the drive shaft such that the source of kinetic energy is configured to cause the expander wheel to rotate together with the compressor wheel,
• wherein the expander wheel is fluidly coupled to the compressor wheel, thereby allowing the second air from the compressor wheel to be received in the expander wheel and, responsive to energy being removed from the second air, converted into third, expanded and cooled air by the expander wheel for delivery to an environment, and
• wherein the expander wheel and the generator are configured to convert both the source of kinetic energy and energy in the first air into mechanical energy of the drive shaft, and then convert the mechanical energy of the drive shaft into electrical energy in the generator for charging the energy storage device, and thereby powering the rotation driving device.