Dual combined cycle air-conditioning system

摘要

There is described a turbine/compressor air cycle system including a source of bleed air, means for feeding the bleed air directly to a turbine, means for adjustably feeding a portion of the bleed air to a compressor and means for feeding used cabin air to the compressor, the amount of bleed air being fed to the compressor being dependent upon whether high or low pressure bleed air is extant.