Design and Construction of an Air Quality Monitoring System to Mitigate Virus Spread

2021 ◽  
Author(s):  
Samuel Ochie ◽  
Karen Ochie
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
The Novel ◽  
Drilling Rig ◽  
Corona Virus ◽  
Low Humidity ◽  
Carbon Dioxide Levels ◽  
Direct Problems ◽  
Design And Construction

Abstract Air pollution is one of the most dangerous problems we face in the world today. It causes many illnesses and diseases that affect the immune system of humans and non-human animals and is also a means of propagating the novel COVID-19 or corona virus. Temperature, humidity, and the level of carbon dioxide characterize the air quality in an environment. In addition to abnormal temperatures and humidity causing direct problems to humans like headaches, heatstroke, hypothermia and hyperthermia, death and so on, it could also cause complicated problems like the acceleration of the growth and lifespan of harmful viruses like the corona virus especially in closed spaces like on a drilling rig or a processing facility. Multiple studies show that the influenza virus, coronavirus, and many others spread from host to host faster in areas with low humidity and high temperatures and upon infection, mortality rate is higher in low humidity regions. Inhalation of toxic levels of carbon dioxide has adverse effects ranging from drowsiness to coma and even death. Despite safety measures put in place in offshore facilities, there are still cases of corona virus outbreaks, hence this study aims to combat the facilitated spread of viruses and enhancement of good air quality via the design and construction of a device that measures the temperature, humidity, and carbon dioxide levels, using a DHT11 and MQ135 sensor. The temperature, humidity and carbon dioxide levels of the living area, bedroom, kitchen, and balcony in a facility was captured by the device to determine the quality of air and characterized. The values were then compared with the expected values from a trusted website to determine the accuracy of the device. The device showed a 99.8% accuracy and passed quality check making it a recommendation to enhance air quality in facilities, houses, or offices.

AIR QUALITY IMPROVEMENT USING ORNAMENTAL PLANTS IN CLASSROOMS

2021 ◽  
Vol 16 (2) ◽  
pp. 201-216
Author(s):  
Wannawit Taemthong
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Ornamental Plants ◽  
Flux Chamber ◽  
Epipremnum Aureum ◽  
Air Quality Improvement ◽  
Carbon Dioxide Levels ◽  
Reduce Carbon Dioxide

ABSTRACT The purpose of this research is to investigate how indoor air quality might be improved by installing particular ornamental plants available in Thailand. Traditionally, ventilation fans have been used to encourage fresh air into living areas in order to reduce CO2 levels. This consumes more energy than using ornamental plants. Our research screens three types of ornamental plants and selects one to investigate its potential for enhancing indoor air quality by reducing carbon dioxide levels. The three plants are epipremnum aureum, spathiphyllum wallisei, and dieffenbachia sp. The propensity to reduce carbon dioxide levels of each plant was preliminary screened using a closed flux chamber method over a 24-hour period. It was found that epipremnum aureum had the ability to absorb carbon dioxide better than the others. The epipremnum aureum was then put in a classroom to investigate variables in two further experiments. The ability to improve air quality in terms of sensitivity to various light concentrations and the number of plants in the room are explored. It was found that epipremnum aureum should be placed within a distance of 1.5 meters from windows to achieve the appropriate light concentration to enhance indoor air quality. It was also found that 150 pots of epipremnum aureum had the propensity to reduce CO2 by 430 ppm in a classroom of 20 students for an 80-minute class. The use of sufficient amounts of epipremnum aureum can improve air quality in classrooms. A model to estimate numbers of such plants needed in classrooms is also presented.

scholarly journals Analysis of Various Ventilation Systems Due to the Quality of Indoor Air in Educational Buildings

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 29
Author(s):  
Katarzyna Gładyszewska-Fiedoruk ◽  
Vasyl Zhelykh ◽  
Andrii Pushchinskyi
Keyword(s):  
Carbon Dioxide ◽  
Computer Simulation ◽  
Air Quality ◽  
Knowledge Acquisition ◽  
Indoor Air ◽  
Educational Buildings ◽  
Building Ventilation ◽  
Ventilation Systems

The quality of internal air is one of the factors that affect the pace and quality of knowledge acquisition. Therefore, it is important that the classrooms have high air quality. Using computer simulation, the effect of various building ventilation variants on air quality in classrooms was analyzed. As an indicator of air quality, the concentration of carbon dioxide in school halls was assumed.

scholarly journals Potential link between compromised air quality and transmission of the novel corona virus (SARS-CoV-2) in affected areas

2020 ◽  
Vol 190 ◽  
pp. 110001 ◽  
Author(s):  
M.G. Manoj ◽  
M.K. Satheesh Kumar ◽  
K.T. Valsaraj ◽  
C. Sivan ◽  
Soumya K. Vijayan
Keyword(s):  
Air Quality ◽  
The Novel ◽  
Corona Virus ◽  
Potential Link

scholarly journals Method for Estimation of CO2 Gains from Persons in Builidings

Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1309 ◽  
Author(s):  
Antonio Rodero ◽  
Dorota Anna Krawczyk
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Carbon Dioxide Concentration ◽  
Co2 Concentration ◽  
Males And Females ◽  
Sources Of Co2

Carbon dioxide concentration is an important parameter to know Indoor Air Quality of a building. One of the most important sources of CO2 in poor ventilated building is human activity. This work presents a method for experimental determination of human CO2 generation rate based on measuring of time evolution of indoor CO2 concentration. The method is applied to 5 rooms of an educational building from Bialystok (Poland). Similar carbon dioxide gains were obtained in all rooms, around 0.0046 L/s, which correspond to theoretical CO2 generation rates of a sedentary activity for persons, males and females, between 21–30 years old, characteristics of occupants of analyzed rooms.

Effect of atmospheres combining high oxygen and carbon dioxide levels on microbial spoilage and sensory quality of fresh-cut pineapple

2013 ◽  
Vol 86 ◽  
pp. 73-84 ◽  
Author(s):  
Bao-Yu Zhang ◽  
Simbarashe Samapundo ◽  
Vasileios Pothakos ◽  
Ilse de Baenst ◽  
Göknur Sürengil ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Sensory Quality ◽  
High Oxygen ◽  
Microbial Spoilage ◽  
Fresh Cut ◽  
Carbon Dioxide Levels

scholarly journals Comparing carbon dioxide levels within urban transport microenvironments during rush hour and non-rush traffic

2015 ◽  
Author(s):  
Ming Hei (Alan) Leung ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Bobby Sidhu
Keyword(s):  
Carbon Dioxide ◽  
Statistical Analysis ◽  
Air Quality ◽  
Primary Objective ◽  
Urban Transport ◽  
P Value ◽  
Confined Spaces ◽  
Significant Difference ◽  
Carbon Dioxide Levels ◽  
American Society

  Introduction: Commuters spend countless hours within tightly confined spaces with limited ventilation that may be filled with many contaminants. By analyzing if there is a significant difference between levels of carbon dioxide between rush and non-rush hour conditions, it can be determined if some commuters are subjected to poorer levels of air quality during certain times of the day. Objectives: The primary objective of this study is to understand whether there are significant ventilation deficiencies during rush compared to non-rush hour times in urban transport microenvironments. Methods: Analysis of urban transport microenvironments was done using the TSI brand QTrak Indoor Air Quality (IAQ) Monitor to gather data on carbon dioxide at 1-minute intervals on the 99 B-line express bus that runs between Broadway and Commercial Skytrain Station and the Broadway and Cambie Street Skytrain Station. Results: A one tailed T-test was done on the NCSS 9 statistical software to compare if rush hour urban microenvironments had significantly higher concentrations of carbon dioxide than when compared to non-rush hour. Statistical analysis determined that since the P-value was well above the alpha level of 0.05 (i.e. P<0.05), it gives reason to accept the null hypothesis, which states that rush hour concentrations were not higher than non-rush hour. Conclusion: Statistical analysis determined that the overall concentrations of carbon dioxide during rush hour were not significantly higher than non-rush hour times. This result may have been attributed to conditions and factors during data collection that could not be controlled by the researcher. Due to the length of the route, exposure times were found to be within time-weighted averages as set out by the American Conference of Industrial Hygienists (ACGIH), though it was still not within the recommended limit of 1000 ppm as set out by the American Society of Heating, Refrigeration and Air-Conditioning (ASHRAE).  

scholarly journals Simulation and Analysis of Various Ventilation Systems Given in an Example in the Same School of Indoor Air Quality

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2845 ◽  
Author(s):  
Katarzyna Gładyszewska-Fiedoruk ◽  
Vasyl Zhelykh ◽  
Andrii Pushchinskyi
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Natural Ventilation ◽  
Ventilation System ◽  
Carbon Dioxide Concentration ◽  
Additional Energy ◽  
Exhaust Ventilation ◽  
Building Ventilation ◽  
The Cost

The quality of internal air is one of the factors that affect the pace and quality of knowledge acquisition. Therefore, it is important that classrooms have high quality of air. Using computer simulation, the effect of various building ventilation variants on air quality in classrooms was analyzed. Two criteria were analyzed and six variants of ventilation. The analysis was carried out using the CONTAMW program, used for multi-zone analysis of ventilation and air quality in a building. As an indicator of air quality, the concentration of carbon dioxide in school halls was adopted. The analyses show that natural ventilation is not able to provide proper air exchange. Regular airing of classrooms during breaks can reduce the carbon dioxide concentration to 2500 ppm, however, there is a significant reduction in indoor temperature (even below 10 °C). The best control over the internal environment can be obtained by using a supply–exhaust ventilation system with heat recovery. Obtaining a higher stabilization of ventilation is achieved by supplying additional energy to drive fans, however, this is only a small amount of energy compared to the cost of heat for heating the building (maximum 2%).

scholarly journals Kualitas Udara Selama Perjalanan di Kapal Motor Camara Nusantara 3

2020 ◽  
Vol 8 (2) ◽  
pp. 61-66
Author(s):  
D. Talithania ◽  
Salundik ◽  
A. Yani
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Concentration Level ◽  
Ventilation System ◽  
Threshold Value ◽  
Normal Range ◽  
Gas Concentration ◽  
Mode Of Transportation ◽  
Methane Carbon

The Camara Nusantara Ship is a mode of transportation used for transporting cattle to various islands. The journey from Kupang, East Nusa Tenggara to Jakarta took five days. The gases that produced during the trip on the ship were ammonia, methane, carbon dioxide, and carbon monoxide. This aim of research to analysis the air quality of each deck on the ship during transportation and inform the threshold of gas concentration as well as strategies to improve air quality for livestock on the Camara Nusantara Ship. Measurements were taken three times: morning (8 am), noon (12 pm) and afternoon (4 pm). Observation of the gas concentration level was carried out for 10 - 15 minutes. The study was conducted observation, and data analysis was done descriptively. The results showed that the level of gas concentration still in the normal range and below the threshold value and the microclimate on the deck still in the normal range. Another factor that influence air quality were still in the safe category, namely wind speed. Strategies that can be applied to anticipate the decline in air quality by improving the ventilation system on the ship by focusing more on the engine airflow on the vessel.

scholarly journals The use of modern technologies in carbon dioxide monitoring

2017 ◽  
Vol 12 (2) ◽  
pp. 129-137
Author(s):  
Petr Komínek ◽  
Jan Weyr ◽  
Jiří Hirš
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Web Application ◽  
Indoor Environment ◽  
Key Factors ◽  
Smart Meters ◽  
Air Supply

Abstract Indoor environment has huge influence on person’s health and overall comfort. It is of great importance that we realize how essential indoor air quality is, considering we spend on average as much as 90% of our time indoors. There are many factors that affect indoor air quality: specifically, inside air temperature, relative humidity, and odors to name the most important factors. One of the key factors indicating indoor air quality is carbon dioxide (CO2) level. The CO2 levels, measured in prefab apartment buildings, indicates substantial indoor air quality issues. Therefore, a proper education of the occupants is of utmost importance. Also, great care should be directed towards technical and technological solutions that would ensure meeting the normative indoor environment criteria, especially indoor air CO2 levels. Thanks to the implementation of new emerging autonomous technologies, such as Internet of Things (IoT), monitoring in real-time is enhanced. An area where IoT plays a major role is in the monitoring of indoor environment. IoT technology (e.g. smart meters and sensors) provide awareness of information about the quality of indoor environment. There is a huge potential for influencing behaviour of the users. Through the web application, it is possible to educate people and ensure fresh air supply.

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