Experimental apparatus and method for measuring settlement of particulate matters in airplane heat exchanger

A technology of experimental devices and heat exchangers, applied in measuring devices, particle and sedimentation analysis, instruments, etc., can solve problems such as the influence of aircraft environmental control systems, the residence time of air pollution in airports, etc., and achieve reliable operation and maintenance effects

Pending Publication Date: 2017-01-04
TIANJIN UNIV
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Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides an experimental device and method for measuring the deposition of particulate matter on the aircraft heat exchanger, which overcomes the pollution of the airport atmosphere in the prior art and the control of the aircraft environment by the residence time of the aircraft on the ground. System Impact Questions

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  • Experimental apparatus and method for measuring settlement of particulate matters in airplane heat exchanger
  • Experimental apparatus and method for measuring settlement of particulate matters in airplane heat exchanger
  • Experimental apparatus and method for measuring settlement of particulate matters in airplane heat exchanger

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The test bench of the present invention is as figure 1 As shown, the air in the laboratory first passes through the high-efficiency filter 1 and then fully mixes with the oily particles emitted by the aerosol generator 2 (MAG 3000) in the mixing box 3 to keep the concentration uniform. In order to ensure that the particles in the mixing box 3 can be fully mixed with the air, the volume in the mixing box 3 should be greater than the air flow rate and the air supply form of "upper delivery and lower delivery" should be adopted. Then the mixed air passes through a length of 1.2m air duct 4 to make it fully developed turbulence, and then is sent to the upstream sampling box 5 of the heat exchanger 6, and then enters the target to be measured—the aircraft heat exchanger, Then the air enters the downstream sampling box 7, and finally is dis...

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Abstract

The invention discloses an experimental apparatus and method for measuring settlement of particulate matters in an airplane heat exchanger. Air in a laboratory is first sufficiently mixed with oily particulate matters discharged from an aerosol generator after passing through a high-efficiency filter so as to keep uniform concentration; and the mixed air passes through a section of air duct, after the mixed air forms fully-developed turbulent flow, the air is sent into an upstream sampling box of the heat exchanger, then the air enters an object to be measured-the airplane heat exchanger, the air then enters a downstream sampling box, and finally the air is discharged out of the laboratory through a centrifugal fan. By adopting the apparatus and method, a settlement rate of the particulate matters in the heat exchanger can be conveniently rapidly and accurately measured, and a reliable way is provided for the operation maintenance of the heat exchanger in an airplane environmental control system.

Description

technical field [0001] The invention belongs to the field of air quality and pollutant transmission in closed spaces, and in particular relates to an experimental device and method for measuring the sedimentation rate of heat exchanger particles in an aircraft environment control system. Background technique [0002] The environmental control system of civil aviation airliners plays an important role in providing passengers with a safe, healthy and comfortable cabin environment. Half of the air sent into the cabin comes from fresh outdoor air, and the other half comes from clean air filtered through high-efficiency filters in the cabin. Among them, most of the fresh air from the outside enters the aircraft environmental control system from the engine system or the auxiliary power system similar to the engine. There is no high-efficiency filter installed. Particles entering the air-conditioning package will affect the efficiency of the heat exchanger. Therefore, airports Air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04G01N15/02
CPCG01N15/0272G01N15/04
Inventor 徐秋雨龙正伟
Owner TIANJIN UNIV
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