A device with no moving parts provides a steady stream of chilled air at -25C and 1 bar. the feed to the device is compressed air at 25C and 5 bar. In addition to the stream of chilled air, a second stream of warm air flows from the device at 75C and 1 bar. Assume adiabatic operation, what is the ratio of chilled air to warm air that the device produces? Assume that air is an ideal gas for which Cp= (7/2)R.