초록 ▼

A method and apparatus for air conditioning parked aircraft is disclosed in which air at a temperature below the freezing point of water is provided under pressure to the aircraft. The use of sub-freezing air enables a reduction in air flow rate over prior art systems. This results in less power con

A method and apparatus for air conditioning parked aircraft is disclosed in which air at a temperature below the freezing point of water is provided under pressure to the aircraft. The use of sub-freezing air enables a reduction in air flow rate over prior art systems. This results in less power consumption for cooling and pressurizing the air and also results in less cabin noise. Further, the air entering the cabin is very low in humidity, which enhances passenger comfort. Several cooling system mechanizations are presented which include provisions for automatic frost removal.

대표청구항 ▼

A method of maintaining, for a prescribed cabin heat flow rate, the temperature in the interior of the passenger cabin of a parked aircraft at approximately 75°F., where the aircraft has an external air inlet for the introduction of cooling air into ductwork communicating with the cabin, the method

A method of maintaining, for a prescribed cabin heat flow rate, the temperature in the interior of the passenger cabin of a parked aircraft at approximately 75°F., where the aircraft has an external air inlet for the introduction of cooling air into ductwork communicating with the cabin, the method comprising the steps of: reducing the temperature of a portion of the ambient air external to the aircraft to a first level of temperature which is at least 5°F. below the freezing point of water, using electrically-powered vapor-compression cycle cooling apparatus located external to the airplane; and providing to the aircraft external air inlet at a second level of temperature which is below the freezing point of water the air cooled by the cooling apparatus at a cooling air flow rate established by an electric motor driven blower whose power requirement is more than 10 percent of the power required by the cooling apparatus and which compresses the air cooled by the cooling apparatus to a pressuure of at least 13 inches of water, where the cooling air flow rate is such that the ratio of the cabin heat flow rate, in units of BTUs per hour, to the cooling air flow rate, in units of pounds per mintue, is greater than 600.