Abstract: An auxiliary ambient air refrigeration system for cooling and controlling humidity in an enclosure including a conventional refrigeration unit for providing cool refrigerated air to the enclosure, an auxiliary refrigeration unit for providing cool ambient air to the enclosure, a first sensor unit for sensing air temperature and humidity inside the enclosure, a second sensor unit for sensing ambient air temperature and humidity; and a controller responsive to the sensor units and their indicated dew points of the enclosure air and the ambient air for enabling the auxiliary refrigeration unit to provide cool ambient air to the enclosure when temperature inside the enclosure is above a first predetermined temperature, the ambient temperature is less than the enclosure temperature by a predetermined differential temperature and the dew point of the ambient air is matched to the dew point range of the air in the enclosure.

Abstract: An auxiliary ambient air refrigeration system for cooling and controlling humidity in an enclosure including a conventional refrigeration unit for providing cool refrigerated air to the enclosure, an auxiliary refrigeration unit for providing cool ambient air to the enclosure, a first sensor unit for sensing air temperature and humidity inside the enclosure, a second sensor unit for sensing ambient air temperature and humidity; and a controller responsive to the sensor units and their indicated dew points of the enclosure air and the ambient air for enabling the auxiliary refrigeration unit to provide cool ambient air to the enclosure when temperature inside the enclosure is above a first predetermined temperature, the ambient temperature is less than the enclosure temperature by a predetermined differential temperature and the dew point of the ambient air is matched to the dew point range of the air in the enclosure.

Abstract: A drag reducer including a frame hinged to the rear of a vehicle and operable between a position adjacent the rear of the vehicle and a position swung away from the rear of the vehicle to allow access to the rear of the vehicle, and an inflatable bag attached to the frame, operable between a deployed inflated configuration and a stowed deflated configuration, the inflatable bag including at least two converging panels defining an aerodynamic drag reducing structure in the deployed inflated configuration.

Abstract: The invention pertains to an auxiliary outside air refrigeration system for use in combination with a conventional refrigeration system to supply refrigeration to an enclosure whereby cold outside air is used as the cooling medium. A differential thermostatic controller monitors the temperature inside the enclosure and in the outside atmosphere and, if the temperature inside the enclosure indicated the need for refrigeration, activates the fans of the auxiliary outside air system whenever the temperature differential between inside and outside indicates adequate potential for refrigeration. The conventional refrigeration system is energized only when the more energy-efficient outside air refrigeration system is not able to maintain adequate refrigeration within the enclosure. The controller can be used for an auxiliary outside air refrigeration system using direct exchange of air between the enclosure and the outside atmosphere or one using an air-to air heat exchanger.