CO_ TEMPERATURE CONTROL SYSTEM FOR TRANSPORT VEHICLES

摘要

ABSTRACT OF THE DISCLOSUREA cooling system for an insulated enclosure,comprising an evaporator containing CO2 in liquid andgaseous phases. A vent is coupled to the evaporator torelease CO2 gas in order to reduce the pressure in theevaporator caused by the vaporization of CO2 therein. Anelectronic controller regulates the opening and closingoperation of the vent to produce a generally cyclicalpressure variation in the evaporator, having an amplitudeselected in accordance with the heat absorption rate ofthe system, whereby regulating the CO2 discharge rate fromthe evaporator in accordance with the heat absorptionrate. A ventilation system is also provided to produce anair current in the enclosure. The ventilation systemincludes ducts and a blower powered by the CO2 gas releasedfrom the evaporator.