Aircraft ground support air conditioning unit with heat exchanger bypass

摘要

A system and method of supplying temperature-controlled air to an aircraft environmental control system during ground support operations that uses a bypass valve in a bypass line to control the amount of cooling air flowing through a heat exchanger. The heat exchanger removes heat from a flow of compressed air supplied to the air conditioning unit and supplies cooled compressed air at a desired temperature. The temperature of the cooled compressed air is controlled by selectively positioning the bypass valve, which regulates cooling air flow through the heat exchanger.