| 摘要 |
An air conditioning system uses available compressed air (e.g., from an engine compressor) and feeds it into a cascade of two decompression compressors, a heat exchanger and a moisture precipitator which discharges into the cabin. Air is bled off the cabin to maintain a particular pressure, but a return flow for air from the cabin is also maintained, such air being cleaned and compressed, chilled and mixed with the tapped air. The mixing stage is provided upstream of the second turbine but downstream of the first one. The compressed return flow air is either cooled before mixing in a separate cooling circuit, or is added to the tapped air flow upstream of the heat exchanger. Turbines and heat exchanger are bypassed individually or jointly for temperature control. One or both turbines drive the compressor for the return flow of air, both turbines or the other one drive normally a blower for drawing air through the heat exchanger as recipient for thermal energy.
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