State-space analysis of influencing factors on airborne particle concentration in aircraft cabins

Zhai, Shang; Li, Zheng; Zhao, Bin

doi:10.1016/j.buildenv.2013.12.019

Cited by 12 publications

(7 citation statements)

References 23 publications

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“…Specially, the fine and ultrafine particles can deposit onto human skin and be inhaled into people's lunge, which contributed to an increase of the incidences of skin cancer, morbidity, lung cancer, cardiovascular and cardiopulmonary diseases [4e7]. The concentration of fine particles in aircraft cabins may be much higher than that of supply air [8]. The secondary organic aerosol (SOA), a product of oxidative reactions with reactive organic compounds (ROGs), is an important source of fine particles in indoor environments [9,10].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the contribution of secondary organic aerosol to PM2.0 concentration in aircraft cabins

Zhao

2014

Building and Environment

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Section: Introductionmentioning

confidence: 99%

Estimation of the contribution of secondary organic aerosol to PM2.0 concentration in aircraft cabins

Zhao

2014

Building and Environment

Self Cite

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“…However, it was difficult to measure the actual air change rate on a commercial flight. The air change rate for this airplane was estimated to be 30 h −1 , which was the average value obtained from the literature . To improve the results, efforts should be made to obtain more measurement data for the actual air change rate on commercial flights.…”

Section: Resultsmentioning

confidence: 96%

“…The air change rate for this airplane was estimated to be 30 h −1 , which was the average value obtained from the literature. 12,[45][46][47][48][49] To improve the results, efforts should be made to obtain more measurement data for the actual air change rate on commercial flights. This study assumed a fully occupied condition, and the same number of passengers and crew members on all the flights.…”

Section: Accumulation Of Particles Deposited Around Air Supply Nozzmentioning

confidence: 99%

“…However, the particle concentration inside the room, an important factor in total particle accumulation in the model, was set at a constant value. Particles inside an aircraft cabin were found to originate from unfiltered supply air and in‐cabin sources . Furthermore, it was observed that particle concentration inside a cabin was not constant during different flight periods, because of variations in outdoor particle concentration and in‐cabin particle sources.…”

Section: Introductionmentioning

confidence: 99%

“…Particles inside an aircraft cabin were found to originate from unfiltered supply air 11 and in-cabin sources. 12 Furthermore, it was observed that particle concentration inside a cabin was not constant during different flight periods, [13][14][15] because of variations in outdoor particle concentration and in-cabin particle sources. In order to use the proposed model to predict particle accumulation on the surfaces around the nozzles in an airplane, it is necessary to identify the dynamic particle concentration inside the aircraft cabin under different outdoor particle concentrations and in-cabin sources.…”

mentioning

confidence: 99%

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Prediction of particle deposition around the cabin air supply nozzles of commercial airplanes using measured in-cabin particle emission rates

et al. 2018

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Enhanced soiling on the surfaces around air supply nozzles due to particle deposition is frequently observed in commercial airliners. The problem is worsened by severe outdoor air pollution and flight delays in China. The particles in an aircraft cabin originate from both outdoor and in-cabin sources. This study conducted measurements on multiple commercial flights to obtain particle emission rates from in-cabin sources. Additional experiments on a retired MD-82 airplane provided justification of the in-flight measurements. The in-cabin sources emitted more particles during boarding/deplaning than during meal servicing and sitting. The average PM2.5 emission rates were 7.2, 2.6, 1.9, and 1.8 (μg/min per person), respectively, during the boarding/deplaning, sitting on the ground, sitting in the air, and meal servicing. The corresponding PM10 emission rates were 15.4, 6.1, 5.3, and 5.4 (μg/min per person), respectively, for these four periods. The average particle emission rate from in-cabin sources varied seasonally and was the highest in winter. With the measured data, this investigation used a CFD model to predict the accumulation of particles deposited around the nozzles of an airplane, taking into account the flight routes and the outdoor particle concentrations at the airports where the airplanes were parked. For the most polluted airplane in China, the dirty spots/areas around the nozzles inside the airplane became visible after 6 months. The method proposed in this study can be used for any commercial airplane to predict the accumulation of particles deposited around the air supply nozzles.

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A new PM2.5-based CADR method to measure air infiltration rate of buildings

Liu

Zhou

et al. 2020

Build. Simul.

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State-space analysis of influencing factors on airborne particle concentration in aircraft cabins

Cited by 12 publications

References 23 publications

Estimation of the contribution of secondary organic aerosol to PM2.0 concentration in aircraft cabins

Estimation of the contribution of secondary organic aerosol to PM2.0 concentration in aircraft cabins

Prediction of particle deposition around the cabin air supply nozzles of commercial airplanes using measured in-cabin particle emission rates

A new PM2.5-based CADR method to measure air infiltration rate of buildings

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