Performance optimization of airliner cabin air filters

Zhang, Xin; Liu, Junjie; Liu, Xuan; Liu, Chaojun

doi:10.1016/j.buildenv.2020.107392

Cited by 19 publications

(27 citation statements)

References 23 publications

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“…The results indicate that the V-filter was the most energy-efficient, with a filtration efficiency of 99.98%, and the lowest pressure drop for fixed air volume air-conditioning systems. Zhang and others [119] conducted a longitudinal comparative study on the airflow resistance and energy consumption of air filters with different structures in aircraft passenger cabins. At a certain rated air volume, the pressure drop of V-shaped, cylinder and plate filters were 336 Pa, 136 Pa and 308 Pa respectively, and their energy consumption over the whole life cycle was 2622 kWh, 782 kWh and 1222 kWh.…”

Section: Impacts Of Hvac System Operation On Energy Consumptionmentioning

confidence: 99%

COVID-19 Impact on Operation and Energy Consumption of Heating, Ventilation and Air-Conditioning (HVAC) Systems

Zheng

Wang

et al. 2021

Advances in Applied Energy

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Heating, ventilation and air-conditioning (HVAC) system is favourable for regulating indoor temperature, relative humidity, airflow pattern and air quality. However, HVAC systems may turn out to be the culprit of microbial contamination in enclosed spaces and deteriorate the environment due to inappropriate design and operation. In the context of COVID-19, significant transformations and new requirements are occurring in HVAC systems. Recently, several updated operational guidelines for HVAC systems have been issued by various institutions to control the airborne transmission and mitigate infection risks in enclosed environments. Challenges and innovations emerge in response to operational variations of HVAC systems. To efficiently prevent the spread of the pandemic and reduce infection risks, it is essential to have an overall understanding of impacts caused by COVID-19 on HVAC systems. Therefore, the objectives of this article are to: (a) provide a comprehensive review of the airborne transmission characteristics of SARS-CoV-2 in enclosed spaces and a theoretical basis for HVAC operation guideline revision; (b) investigate HVAC-related guidelines to clarify the operational variations of HVAC systems during the pandemic; (c) analyse how operational variations of HVAC systems affect energy consumption; and (d) identify the innovations and research trends concerning future HVAC systems. Furthermore, this paper compares the energy consumption of HVAC system operation during the normal times versus pandemic period, based on a case study in China, providing a reference for other countries around the world. Results of this paper offer comprehensive insights into how to keep indoor environments safe while maintaining energy-efficient operation of HVAC systems.

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Section: Impacts Of Hvac System Operation On Energy Consumptionmentioning

confidence: 99%

COVID-19 Impact on Operation and Energy Consumption of Heating, Ventilation and Air-Conditioning (HVAC) Systems

Zheng

Wang

et al. 2021

Advances in Applied Energy

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“…Polynomial approximation thus appears to be more universal as it can be used to fit various loading curves more accurately. This is also obvious throughout the literature where polynomial fit is reliably used to optimize and analyze performance of filters in various applications such as airliner cabin filters [ 23 ], engine air intake [ 15 ], or evaluating the HEPA filter media [ 14 ]. Comparing the coefficients of determination (R 2 ), we can see better tightness of polynomial fit compared to the exponential.…”

Section: Resultsmentioning

confidence: 99%

An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration

Bulejko

Krištof²,

Dohnal³

2021

Membranes

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In this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust to simulate particle-polluted air. We measured pressure drop development of the membranes at different flowrates and dust concentrations, and, after each experiment, the dust deposited on the membrane fibers was weighed to obtain dust holding capacity (DHC). The obtained experimental data was analyzed using various average pressure drop models and compared with average pressure drop obtained from pressure drop/dust load dependence using a curve fit. Exponential and polynomial fitting was used and compared. Pressure drop in relation to the dust load followed different trends depending on the experimental conditions and inner fiber diameter. At higher flowrate, the dependence was polynomial no matter what the fiber diameter. However, with higher fiber diameter at lower permeate velocities, the dependence was close to exponential curve and followed similar trends as observed in planar filter media. Dust-holding capacity of the membranes depended on the experimental conditions and was up to 21.4 g. However, higher dust holding capacity was impossible to reach no matter the experiment duration due to self-cleaning ability of the tested membranes.

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“…The filtration parameters (including air volume, resistance, number efficiency, gravimetric efficiency, and dust capacity) of the air filter under investigation were tested by the experimental system, based on field studies [14,17]. The main components of the test system are shown in Figure 1.…”

Section: Performance Testing Systemmentioning

confidence: 99%

“…Additionally, the filter efficiency and pressure drop performance were affected by the diameter, orientation, and distribution of the fibers in an experimental study [13]. With respect to the operating life of filters, a study was carried out on high-efficiency air filters, and a life prediction model was developed [14]. Some researchers have discussed the benefits of using a consistent testing method to characterize the aerodynamic and energy performance of FFU, and a method has been proposed for evaluating the lab-measured performance of relatively new fan filter units (FFUs) [15].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Chemical Fiber Air Filter for General Ventilation

Chai

Wang

et al. 2021

Atmosphere

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Air filters for general ventilation have mainly been used to control the concentration of indoor particulate matter. In this study, the pressure differential, test dust capacity, quality factor and operating life of class F8 pleat–plate and multi-bag type chemical fiber filters were evaluated using an air filter performance test system. The results showed that the resistance increase rate of multi-bag filter (0.49 Pa/g·(cm/s)) was lower than that of pleat–plate filter (1.94 Pa/g·(cm/s)), the quality factor of the multi-bag filter was lower than that of pleat–plate filter, and the dust capacity of the multi-bag filter was much higher than that of the pleat–plate filter. The operating life of the multi-bag filter was 8 times as that of the pleat–plate filter with the measured PM2.5 of outdoor. The energy consumption of the pleat–plate filter was 2.2 times that of the multi-bag filter. Analyzing the electron microscope photos after dust loading, the dust depth of pleat–plate filter into filter material was thinner than that of multi-bag filter. The research results could provide data support for the design optimization and selection of ventilation filters and the treatment of the particulate matter in indoor environments.

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Performance optimization of airliner cabin air filters

Cited by 19 publications

References 23 publications

COVID-19 Impact on Operation and Energy Consumption of Heating, Ventilation and Air-Conditioning (HVAC) Systems

COVID-19 Impact on Operation and Energy Consumption of Heating, Ventilation and Air-Conditioning (HVAC) Systems

An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration

Assessment of Chemical Fiber Air Filter for General Ventilation

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