| 摘要 |
A dual-pack, aircraft environmental control system (100) has each pack (104, 108) dedicated to providing a temperature-controlled air supply to a corresponding compartment (144, 148), either the crew (144) or passenger (148), of the aircraft. Each refrigeration pack (104, 108) is fed hot, compressed bleed air (176, 200) from an associated turbine engine (128, 132) on the aircraft. During normal operation, the pack associated (104, 108) with a particular compartment (144, 148) on the aircraft provides the air supply with independent temperature control to that compartment. However, during failure of one of the refrigeration packs (104, 108) and the resulting operation of the other pack, environmental control system (100) is able to provide independent temperature control of the air supplied to each compartment (144, 148).
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