Determination on Carbon Dioxide Levels in School Buildings: the Effect of Thermal Efficiency Improvement

Mainka, Anna; Zajusz-Zubek, Elwira

doi:10.17512/ios.2018.2.3

Cited by 3 publications

(2 citation statements)

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“…The already-published works on education buildings confirm that concentration of CO 2 generated mainly during metabolism is a very good and most frequently used measure of air quality in rooms [28,[41][42][43][44]. As the analysis of CO 2 concentration in classrooms shows, during classes the concentration of CO 2 gradually increases [30,37,[44][45][46]. Its gradual fall could be noticed only after all the classes end.…”

Section: Introductionmentioning

confidence: 99%

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The Required Amount of Ventilation Air for the Classroom and the Possibility of Air Infiltration through the Windows

Lis

2021

Energies

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The majority of education buildings in Poland are equipped with natural (gravity) ventilation, where the air inflow depends on the level of window airtightness. A complete statistical urban population of 50 school buildings in Czestochowa have been examined. The main issue to be clarified is the answer to the following questions: Is it theoretically possible to supply enough air to meet the ventilation requirements with gravity ventilation? What is the airtightness of the windows at which it will be possible? The average technical conditions of windows in the analysed buildings were bad. However, only in the case in which high external air leakage coefficient a = 7.0 m3/(h m daPa2/3) (q100KL = 32.4912 m3/(h m) is the amount of air passing through the leaks similar to the quantitative ventilation requirements for classrooms. The quantity of air flowing from the outside through modernized windows that meet the technical requirements (a = 0.6 to 1.0 m3/(m h daPa2/3)) covers on average only about 12% and about 21% of the ventilation needs. Without installing additional vents in the rooms, or better yet, installing mechanical ventilation with heat recovery, meeting the ventilation norm requirements will be impossible.

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Section: Introductionmentioning

confidence: 99%

“…Due to low outside air temperatures in the winter period people tend to avoid opening windows, which would create a more intensive ventilation. The situation is similar in education buildings that have been thermally upgraded, but where the existing natural ventilation system has not been changed into a more effective one [44,[52][53][54].…”

Section: Introductionmentioning

confidence: 99%

The Required Amount of Ventilation Air for the Classroom and the Possibility of Air Infiltration through the Windows

Lis

2021

Energies

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Assessment of personal deposited dose and particle size distribution of bacterial aerosol in kindergarten located in southern Poland

Brągoszewska,

Mainka

2024

Environmental Pollution

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Assessment of Personal Deposited Dose and Particle Size Distribution of Bacterial Aerosol in Kindergarten Located in Southern Poland

Brągoszewska,

Mainka

2023

Preprint

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Determination on Carbon Dioxide Levels in School Buildings: the Effect of Thermal Efficiency Improvement

Cited by 3 publications

References 10 publications

The Required Amount of Ventilation Air for the Classroom and the Possibility of Air Infiltration through the Windows

The Required Amount of Ventilation Air for the Classroom and the Possibility of Air Infiltration through the Windows

Assessment of personal deposited dose and particle size distribution of bacterial aerosol in kindergarten located in southern Poland

Assessment of Personal Deposited Dose and Particle Size Distribution of Bacterial Aerosol in Kindergarten Located in Southern Poland

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