Abstract: A power generation apparatus for a heat exchanger exhausting pressurized gas includes an air circulation device for moving an air flow at a first atmosphere to contact the heat exchanger; a battery connected to the an air circulation device for providing electrical energy to power the air circulation device; a generator electrically connected to the battery to charge the battery with the electrical energy; a gas motor mechanically connected to the generator to drive the generator to provide the electrical energy; and a pipe connected to the heat exchanger for receiving the pressurized gas from the heat exchanger and directing said pressurized gas to the gas motor.

Abstract: A cooling, heat exchanging, system effectively heats or cools the air within an enclosed space. The system operates for an extended time period without requiring the use of a generator or utility power.

Abstract: An on-vehicle air conditioner for air conditioning, comprising a refrigerating circuit having a refrigerant outside heat exchanger installed so as to perform a heat exchange with outside air and usable for both cooling and heating, a coolant circuit having a coolant outside heat exchanger installed so as to perform a heat exchange with the outside air and allowing the coolant of an engine to circulate therein, and at least one opening/closing duct for inflow air regulation installed on the forward outside and/or rearward inside of the refrigerant outside heat exchanger, wherein the opening and closing of the duct can be controlled properly according to the situations, whereby cabin cooling, cabin heating, and defrosting can be performed efficiently and sufficiently even if, for example, CO2 refrigerant is used in the cars such as hybrid cars using electricity and gasoline as energy sources and idle stop-capable cars.

Abstract: A camper cooling device is disclosed for a camper in the bed of a pickup truck comprising a holding tank, an intake grill, cooler pads, a plurality of adjustable vents, a maintenance door, and an overflow and drain tube. In accordance with a preferred embodiment, the camper owner first inserts ice into the rear of the holding tank located on the top of the camper. This insertion of ice can be accomplished by standing on the rear bumper, tailgate, or ladder. When the camper is mobile, air flows through the intake grill and over the cooler pads located at the front of the system. The ice cools the incoming air. Vents situated inside the camper compartment direct cold air circulation within the camper. An overflow and drain tube is positioned in the rear of the system to drain excess water.