scholarly journals Associations of indoor carbon dioxide concentrations, VOCS, environmental susceptibilities with mucous membrane and lower respiratory sick building syndrome symptoms in the BASE study: Analyses of the 100 building dataset

2002 ◽  
Author(s):  
M.G. Apte ◽  
C.A. Erdmann
Keyword(s):  
Carbon Dioxide ◽  
Mucous Membrane ◽  
Sick Building Syndrome ◽  
Carbon Dioxide Concentrations ◽  
Base Study ◽  
Sick Building

scholarly journals Towards Healthy Levels of Carbon Dioxide in Schools of the National Oil Company of Abu Dhabi

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Ali Abu-Rahmah ◽  
Rasheed Ahmad ◽  
Abdelmaoula Haboub ◽  
Yasmin Abu-Rahmah
Keyword(s):  
Carbon Dioxide ◽  
Sick Building Syndrome ◽  
Abu Dhabi ◽  
Average Value ◽  
Carbon Dioxide Concentrations ◽  
Air Quality Assessment ◽  
School Day ◽  
Sick Building ◽  
Air Intake ◽  
Ventilation Rates

In their annual indoor air quality assessment for ADNOC Schools, the Abu Dhabi Education Council has reported hazardous levels (∼3000 ppm) of carbon dioxide in fifteen classrooms. Exposure of 5,090 students attending the school for ∼eight hours (typical school day) to such high levels of carbon dioxide would induce adverse health conditions like headaches, drowsiness, and lack of concentration on the short term and serious diseases like asthma and sick building syndrome on the long term. The Health, Safety, and Environment committee of the school has identified clogged air intake vents and dirty AC filters as the main cause of the high carbon dioxide concentrations reported. The outdoor (ambient) carbon dioxide level is measured and has an eight-hour average value of 419 ppm. After cleaning thoroughly, the indoor levels of carbon dioxide, temperature, and relative humidity were monitored simultaneously in each classroom and have average values of ∼1117 ppm, ∼24°C, and ∼37%, respectively. In addition, the average indoor-to-outdoor ratio of carbon dioxide has been improved from 3000 / 419 ≈ 7.2 before cleaning the AC filters to an average ratio of ( 1,117 / 419 ≈ 2.7 ) after cleaning. Thus, ventilation rates in the classrooms monitored in this project are adequate and the corrective actions taken were effective.

scholarly journals The quality of the microclimate in educational buildings subjected to thermal modernization

2019 ◽  
Vol 100 ◽  
pp. 00048
Author(s):  
Anna Lis ◽  
Nadiia Spodyniuk
Keyword(s):  
Carbon Dioxide ◽  
Energy Consumption ◽  
Energy Intensity ◽  
Sick Building Syndrome ◽  
Total Energy Consumption ◽  
Educational Buildings ◽  
Before And After ◽  
Sick Building ◽  
Microclimate Conditions

Realization and exploitation of buildings involves in European Union about 40% of total energy consumption [1]. One of the elements of rationalization of energy consumption in buildings are the undertakings related with thermal modernization of buildings. The actions related with reducing the energy intensity of buildings are not always correlated with improvement of microclimate conditions in the rooms. Errors in the implementation of the energy efficiency program led to the phenomenon of sick building syndrome. The paper presents the results of the research conducted in a few educational buildings before and after thermal modernization. The research includes energy consumption for the heating of building and selected parameters of the interior microclimate. This analysis was carried out to evaluate the influence of energy saving activities on microclimate interior conditions. It was found that in many cases commonly used gravitational ventilation is not able to ensure the proper conditions of the interior microclimate, and the concentrations of carbon dioxide recorded in the tested rooms exceeded the applicable standards.

Sick Building Syndrome Symptoms among the Staff in Schools and Kindergartens: are the Levels of Volatile Organic Compounds and Carbon Dioxide Responsible?

1996 ◽  
Vol 5 (4) ◽  
pp. 232-235
Author(s):  
Stefan Willers ◽  
Sven Andersson ◽  
Rolf Andersson ◽  
Jörgen Grantén ◽  
Christina Sverdrup ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sick Building Syndrome ◽  
Volatile Organic ◽  
Sick Building

scholarly journals Correlation amongst Indoor Air Quality, Ventilation and Carbon Dioxide

2017 ◽  
Vol 9 (2) ◽  
pp. 179-192 ◽  
Author(s):  
N. L. Sireesha
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Sick Building Syndrome ◽  
Well Being ◽  
Ventilation Rate ◽  
Indoor Contaminants ◽  
Sick Building ◽  
Carbon Dioxide Co2

The calculation of carbon dioxide (CO2)  intensities can be employed to see the quality of indoor air and ventilation. The studies undertaken till date have been distorted. The current study summaries the association amongst carbon dioxide and building air quality and ventilation, with carbon dioxide being the marker to evaluate air quality and ventilation performance. High carbon dioxide intensities may show insufficient ventilation per occupant and high indoor contaminants intensities, resulting in the Sick Building Syndrome (SBI) Symptoms. The researcher assessed the literature related to indoor air quality (IAQ), ventilation, and building-linked health issues in schools linked to CO2 discharges and recognised general indicated building-linked well-being signs found in schools. A high rise in the ventilation rate or enhancement in ventilation efficacy and/or indoor contaminant source regulation would be anticipated to reduce the occurrence of chosen signs to its optimum.

scholarly journals Associations of Indoor Carbon Dioxide Concentration and Symptoms of Sick Building Syndrome in Air-Conditioned Lecture Halls

2020 ◽  
Author(s):  
V M Jayasooriya ◽  
R M D H Rajapaksha ◽  
A W M Ng ◽  
S Muthukumaran
Keyword(s):  
Carbon Dioxide ◽  
Sick Building Syndrome ◽  
Carbon Dioxide Concentration ◽  
Strong Positive Correlation ◽  
Design Standards ◽  
Health And Wellbeing ◽  
Sick Building ◽  
Proper Design ◽  
Air Conditioning Systems ◽  
Office Environments

Abstract Indoor Carbon Dioxide (CO 2 ) concentrations and its impacts on health and wellbeing of the occupants is a widely discussed topic in building science. Although there is an abundance of knowledge on relationships between the Sick Building Syndrome (SBS) of office environments and naturally ventilated buildings, there is yet a limited knowledge available on associations’ of SBS in the students of higher educational facilities especially in air-conditioned lecture halls. To fill this research gap, present study has analyzed indoor CO 2 levels of 5 air-conditioned lecture halls with varying occupant densities for ongoing lectures of 2 hours. Statistically significant (α<0.05) strong positive correlation (R= 0.856) was shown between the occupant density and the CO 2 levels of the selected lecture halls. The results from the ordinal logistic regression shows significant odds ratios (OR>1, at 95% confidence interval) for the prevalence of symptoms such as headache, difficulties in concentration, dry throat, cough and tiredness/lethargy for certain lecture halls with high occupant densities. The results of the present study highlight the importance of adhering to proper design standards of lecture halls, optimum occupant control and selection of efficient air conditioning systems to maintain the health and wellbeing of higher education students.

scholarly journals Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Atmosphere ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 800
Author(s):  
Ewa Zender-Świercz
Keyword(s):  
Carbon Dioxide ◽  
Mechanical Ventilation ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Sick Building Syndrome ◽  
Existing Buildings ◽  
Outdoor Air ◽  
Air Humidity ◽  
Thermal Isolation ◽  
Sick Building

Many building are characterized by insufficient air exchange, which may result in the symptoms of sick building syndrome (SBS). A large number of existing buildings are equipped with natural ventilation, whose work is disturbed by activities going to energy-saving. The thermomodernization activities are about mounting new sealed windows and laying thermal isolation, which reduces the amount of infiltrating/exfiltrating air. In many cases, the mechanical ventilation cannot be used due to a lack of a place in building or architectural and construction requirements. One of the solutions to improve the indoor microclimate is the decentralized façade ventilation. In the article, the internal air parameters in an office room equipped with decentralized façade ventilation device were analyzed. The room was equipped with a decentralized façade unit, which cyclically supplied and removed air from the room. The time of the supply/exhaust was changed to 2 min, 4 min, and 10 min. The temperature and the humidity of the indoor air and the outdoor air and the concentration of carbon dioxide inside the room were measured. The analysis showed that despite the lack of a heater in the device, the air temperature in the workplace and in the central point of the room was in the range of 20–22 °C. The air humidity was in the range of 27–43%.

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