Nitrogen enriched air supply system and aircraft

摘要

The present invention intends to extend the operating life of an air separation module (ASM) in a nitrogen enriched air (NEA) supply system by controlling the temperature of bleed air as a supply source of the NEA. The NEA supply system produces NEA that is enriched with nitrogen upon supply of source gas during a flight through an ascent phase, a cruising phase, and a descent phase, and supplies the NEA to a fuel tank, the system including: an air separation module that separates oxygen and nitrogen in the source gas; and a temperature regulation mechanism that regulates a temperature of the source gas supplied to the air separation module. In at least a part of a flight period through the ascent phase and the cruising phase, the temperature regulation mechanism regulates the temperature of the source gas to below a temperature of the source gas in the descent phase.

主权项

1. A nitrogen enriched air supply system which produces nitrogen enriched air that is enriched with nitrogen upon supply of source gas during a flight of an aircraft through an ascent phase, a cruising phase, and a descent phase, and supplies the nitrogen enriched air to a fuel tank of the aircraft, the system comprising:
an altimeter that detects an altitude of the aircraft during the flight; an air separation module that separates oxygen and nitrogen in the source gas; and a temperature regulation mechanism that regulates a temperature of the source gas supplied to the air separation module according to the ascent phase, the cruising phase, and the descent phase determined based on altitude information from the altimeter, wherein, in at least a part of a flight period through the ascent phase and the cruising phase, the temperature regulation mechanism sets the temperature of the source gas to below a temperature of the source gas in the descent phase.