Transactions of Nanjing University of Aeronautics & Astronautics
A Novel Aircraft Air Conditioning System with a Sterilization Unit by Ultra-High-Temperature Air Stream
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Abstract:
An aircraft cabin is a narrow, closed-space environment. To keep the air quality in cabin healthy for passengers, especially during an epidemic such as SARS-CoV-2 (or 2019-nCoV) in 2020, a novel aircraft air conditioning system, called the ultra-high-temperature instantaneous sterilization air conditioning system (UHT-ACS), is proposed. Based on the proposed system, a simulation of the UHT-ACS is analysed in various flight states. In the UHT-ACS, the mixing air temperature of return and bleed air can reach temperature up to 148.8 ℃, which is high enough to kill bacilli and viruses in 2―8 s. The supply air temperature of the UHT-ACS in a mixing cavity is about 12 ℃ in cooling mode, both on the ground and in the air. The supply air temperature is about 42 ℃ in heating mode. Compared with the air conditioning systems (ACS) of traditional aircraft, the supply air temperatures of the UHT-ACS in the mixing cavity are in good agreement with those of a traditional ACS with 60% fresh air and 40% return air. Furthermore, the air temperature at the turbine outlet of the UHT-ACS is higher than that of a traditional ACS, which will help to reduce the risk of icing at the outlet. Therefore, the UHT-ACS can operate normally in various flight states.
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Clc Number:
V231.1
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