scholarly journals Air Duct Performance & Air Quality Control

2021 ◽  
Author(s):  
Dragan Jovanovic
Keyword(s):  
Carbon Monoxide ◽  
Quality Control ◽  
Particulate Matter ◽  
Air Quality ◽  
Air Pollutants ◽  
Test Rig ◽  
Quality Research ◽  
Air Quality Control ◽  
The Future

This report focuses on improving the air performance and air quality of the Bombardier Global 7500. A test rig is designed and built, with the intentions of simulating the inlet ducting of the Global 7500. The performance of the test rig has been measured, and the ducting is prepared for testing. Preparations have been made to test the effect that various air outlets have on the performance of the ducting. The temperature can vary throughout the cabin, causing discomfort for passengers, it is possible that the inlet ducting is responsible for this. Additionally, the effect of numerous air pollutants has been explored and a focus has been made to test particulate matter and carbon monoxide. The Honeywell HPM Series and the Adafruit MiCS5524 have been suggested for detecting particulate matter and carbon monoxide respectively. The ducting designed can be used for various air performance and air quality research in the future.

scholarly journals Air Duct Performance & Air Quality Control

2021 ◽  
Author(s):  
Dragan Jovanovic
Keyword(s):  
Carbon Monoxide ◽  
Quality Control ◽  
Particulate Matter ◽  
Air Quality ◽  
Air Pollutants ◽  
Test Rig ◽  
Quality Research ◽  
Air Quality Control ◽  
The Future

This report focuses on improving the air performance and air quality of the Bombardier Global 7500. A test rig is designed and built, with the intentions of simulating the inlet ducting of the Global 7500. The performance of the test rig has been measured, and the ducting is prepared for testing. Preparations have been made to test the effect that various air outlets have on the performance of the ducting. The temperature can vary throughout the cabin, causing discomfort for passengers, it is possible that the inlet ducting is responsible for this. Additionally, the effect of numerous air pollutants has been explored and a focus has been made to test particulate matter and carbon monoxide. The Honeywell HPM Series and the Adafruit MiCS5524 have been suggested for detecting particulate matter and carbon monoxide respectively. The ducting designed can be used for various air performance and air quality research in the future.

scholarly journals Comparison of EU framework and daughter directives and current Serbian legislation on air pollution monitoring

2008 ◽  
Vol 14 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Milena Jovasevic-Stojanovic ◽  
Snezana Matic-Besarabic
Keyword(s):  
Quality Control ◽  
Air Quality ◽  
Air Pollutants ◽  
Pollution Monitoring ◽  
Air Quality Monitoring ◽  
Air Pollution Monitoring ◽  
Eu Legislation ◽  
Target Values ◽  
Air Quality Control ◽  
The Republic

This paper discusses the air quality control in the current legislation of the Republic of Serbia and compares it with the relevant EU legislation, Framework and Daughter Directives of the air quality monitoring and management. QA/QC components, instrumentation and methodologies of the air quality control in RS are not yet structured and harmonized with EU requirements. The limit and target values for air pollutants notified in EU legislation may be partly comparable with relevant requirements in RS legislation.

scholarly journals Drawing Boundaries for Air Quality Control Under the Clean Air Act: The Importance of NOT Being Nonattainment

2007 ◽  
Vol 1 ◽  
Author(s):  
William V. Luneburg
Keyword(s):  
Quality Control ◽  
Air Quality ◽  
Pollution Control ◽  
Air Pollutants ◽  
Clean Air Act ◽  
Point Of View ◽  
Air Pollution Control ◽  
Air Quality Control ◽  
Clean Air ◽  
Regulatory Controls

Much has changed with regard to air pollution control since 1970 whenCongress revised the Clean Air Act to assume a form that, in very broad terms,it retains today.  From a legal point of view, while states1 still retained at thattime wide-ranging discretion to design the regulatory controls necessary toattain the air quality goals of the Act, that discretion was significantly limitedwhen Congress revisited the Act in 1977.  State discretion diminished to aneven greater extent, particularly with regard to the air pollutants ozone, carbonmonoxide, and particulate matter, when President George H.W. Bush signedthe Clean Air Act Amendments of 1990.

scholarly journals A Review of Air Quality and Concentrations of Air Pollutants in Nigeria

2020 ◽  
Vol 24 (2) ◽  
pp. 373-379
Author(s):  
I.B. Abaje ◽  
Y. Bello ◽  
S.A. Ahmad
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Air Quality ◽  
Air Pollutants ◽  
Fine Particles ◽  
Fine Fraction ◽  
The Body ◽  
Atmospheric Pollutants ◽  
Anthropogenic Sources ◽  
Waste Dumps

This study generally classifies air pollutants on the basis of: primary or secondary, natural or anthropogenic, chemical composition, physical state, and the space scales of their effects. Air pollutants that affect air quality in Nigeria were discussed based on natural and anthropogenic sources. The natural sources include: sand dust, sea spray, volcanic activities, smoke and carbon monoxide from wildfires among others, while the anthropogenic sources include: vehicular emissions, mining activities, industries such as cement companies and quarry factories, agricultural practices and solid waste dumps among others. Some of the atmospheric pollutants that posed greatest threat to human health were equally examined. They include: Sulphur dioxide (SO2) which can react with water vapor (H2O) in the atmosphere to form sulphuric acid (H2SO4) and thus acid rain; particulate matter (PM) with less than 10 μm, particularly fine particles (PM2.5 ) and particles in the fine fraction that are smaller than 0.1 μm (ultrafine particles), can carry toxic chemicals which are linked to cancer; carbon monoxide (CO), even in very small concentrations, can prevent oxygen from being delivered through the body major organs; ozone which is a highly reactive gas causes oxidation of a number of macromolecules within a biological system and produces free radicals that can damage DNA molecules and cause carcinogenesis. Based on the aforementioned, this study recommends that priority should be given to the establishment of air monitoring stations in all urban centers of the country in order to provide accurate and continuous information on air quality. Keywords: anthropogenic pollutants, atmosphere, particulate matter, pollution

scholarly journals Implementation of an Air Pollution Measurement System in Mining Areas of Cerro de Pasco-Peru

2022 ◽  
Vol 12 (1) ◽  
pp. 99-110
Author(s):  
Wilhen Huaman Hinostroza ◽  
◽  
Brian Meneses Claudio ◽  
Alexi Delgado
Keyword(s):  
Air Pollution ◽  
Carbon Monoxide ◽  
Particulate Matter ◽  
Air Quality ◽  
Mining Activity ◽  
Mining Areas ◽  
Toxic Gases ◽  
Pollution Measurement ◽  
Cerro De Pasco

One of the big problems in the city of Cerro de Pasco is the air pollution caused by the mining activity that occurs in this area, this activity generates a total of 3737 metric tons per year of particulate matter, which are thrown into the environment in an alarming way, thus reaching that this particulate matter can lodge inside the organism of the inhabitants permanently, causing in them diseases in the respiratory system, thus affecting the most vulnerable population, producing in them infections in the respiratory tract that can even carry those to death. Nowadays the teams that carry out the monitoring of air quality are restricted only to the academic and governmental sphere, so much so that the population does not know the degree of air pollution. For this reason, it is proposed to carry out a system to measure the level of air pollution taking as main data, the measurement of particulate matter and the emission of carbon monoxide, the data that can be recovered from these measurements to be able to compare them with the parameters dictated by the Ministry of the Environment. As a result, an autonomous system was obtained, with which the level of particulate matter, possible toxic gases, and the measurement of the level of carbon monoxide can be measured, all these pollutants that could be in the environment, all these measurements are constant, thus leading the population to become aware of the level of quality of the environment where they live. Keywords- Environmental pollution, articulated matter, carbon monoxide, toxic gases, mining activity, air quality

The Assessment of Time Series for an Entire Air Quality Control District in Southern Taiwan Using GARCH Model

2018 ◽  
Vol 7 (3.19) ◽  
pp. 119 ◽  
Author(s):  
Shu Lung Kuo ◽  
Ching Lin Ho
Keyword(s):  
Time Series ◽  
Quality Control ◽  
Air Quality ◽  
Air Pollutants ◽  
Garch Model ◽  
Multiple Time ◽  
Asymmetric Volatility ◽  
Air Quality Control ◽  
The Garch Model ◽  
T Distribution

The General Autoregressive Conditional Heteroskedastic (GARCH) model and 10 ordinary air quality monitoring stations in the entire air quality control district in Kaohsiung-Pingtung were used in this study. First, the factor analysis results within multivariate statistics were employed to select the main factor that affects air pollution, namely, the photochemical pollution factor. The characteristics of the GARCH model were discussed in terms of asymmetric volatility among the three air pollutants (PM10, NO2, and O3) within the factor. In addition, this study also combined the multiple time series model VARMA to explore changes in the time series of the three air pollutants and to discuss their predictability.The results showed that, although the coefficient of the GARCH model was negative when estimating the variance equation, the conditional variance would always be positive after taking the logarithm. The results also suggested that the GARCH model was quite capable of capturing the asymmetric volatility. In other words, if the condition that pollution factors might be subject to seasonal changes or outliers generated by the human contamination is not considered, the GARCH model had very good ability to verify the results and make predictions, regardless of whether it adopted any of the three risk concepts: normal distribution, t-distribution, and generalized error distribution. For example, under the trend of time series temporal and spatial distribution in various pollution concentrations of photochemical factors, the optimal model VARMA(2,0,0)-GARCH(1,1) selected in this study was used to conduct time series predictability after the verification procedure. After capturing the last 50 entries of data on O3 concentrations in the sequence, the results showed that the predictability correlation (r) was 0.812, the predictability of NO2 was 0.783 and the predictability of PM10 was 0.759. It can be learned from the results that under the sequence of the GARCH model with strong asymmetric volatility, the residual values of these three sequences as white noise were quite evident, and there was also a high degree of correlation in predictability.  

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