Aircraft apu high-temperature exhaust gas cooling and emission method in ultra-low temperature environment in the laboratory

Abstract

The invention discloses a method for cooling and discharging aircraft APU high-temperature exhaust gas in an ultra-low temperature environment in a laboratory, comprising the steps of: 1. selecting the type of fan; Heating temperature; 4. Estimated spray cooling water mass flow; 5. Aircraft APU high-temperature exhaust primary cooling discharge; 6. Exhaust emission temperature detection and adjustment; 7. Aircraft APU high-temperature exhaust continuous cooling discharge. The invention utilizes the exhaust port temperature sensor in the laboratory, the environmental temperature sensor in the laboratory and the environmental pressure sensor in the laboratory to detect whether the indoor environment is balanced when the APU is running, and then selects the type of fan that meets the requirements, ensuring the temperature and pressure in the laboratory The stability ensures the safety of the aircraft and test personnel, determines the heating temperature of the electric heating cable, effectively prevents the water supply pipe from freezing, freezing and blocking, and still has stability in the ultra-low temperature environment in the laboratory.

Description

technical field [0001] The invention belongs to the technical field of APU drainage and exhaust cooling during the opening process of an aircraft APU in a closed laboratory, and specifically relates to a method for cooling and discharging an aircraft APU high-temperature exhaust gas in a laboratory at an ultra-low temperature environment. Background technique [0002] To carry out climate experiments in the full-aircraft climate laboratory, it is necessary to turn on the aircraft APU to provide power for the aircraft. If the high-temperature and high-pressure exhaust gas discharged by the APU is directly discharged into the laboratory, it will not only destroy the temperature and pressure environment in the laboratory, but also accumulate in the laboratory, which will also pose a threat to the safety of the laboratory, the aircraft and even the test personnel. Therefore, when the aircraft APU is turned on in the laboratory, the exhaust gas needs to be discharged outside the ...

AI Technical Summary

Problems solved by technology

If the high-temperature and high-pressure exhaust gas discharged by the APU is directly discharged into the laboratory, it will not only destroy the temperature and pressure environment in the laboratory, but also accumulate exhaust gas in the laboratory, which will also pose a threat to the safety of the laboratory, aircraft and even test personnel.

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