Indoor Air Quality in the Bedroom of a Single-Family House—A Case Study

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 38
Author(s):  
Katarzyna Gładyszewska-Fiedoruk
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Carbon Dioxide Concentration ◽  
Well Being ◽  
Single Family ◽  
Air Quality Measurements ◽  
Falling Asleep ◽  
And Behavior

People spend nearly 1/3 of their lives in bedrooms. Moreover, the greatest part of this time is spent in lack of awareness, so it is important to maintain suitable conditions in these areas, including air quality. In non-ventilated bedrooms, people may have trouble falling asleep, may not be resting enough during sleep, and they can wake up tired. This affects their well-being and behavior throughout the next day. Indoor air quality measurements were carried out in a single-family home bedroom. The measurements were made in unsealed windows. In the bedroom under examination, where people stay only during the night and where the door is always open and air is constantly being renewed, the carbon dioxide concentration during the night exceeded the permissible standard—1000 ppm.

Indoor air quality assessment in a residential apartment in Budapest

2021 ◽  
Author(s):  
Bushra Atfeh ◽  
Erzsébet Kristóf ◽  
Róbert Mészáros ◽  
Zoltán Barcza
Keyword(s):  
Air Quality ◽  
Data Processing ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Low Cost ◽  
Carbon Dioxide Concentration ◽  
Monitoring Network ◽  
Sampling Frequency ◽  
Irregular Sampling ◽  
Air Quality Measurements

<p>This work focuses on indoor air quality measurements carried out in an apartment in the suburban region of Budapest. The measurements were made by an IQAir AirVisual node air quality monitor which is a so-called low-cost sensor capable to monitor PM<sub>2.5</sub> and carbon dioxide concentration. In this study we analyze data measured during January 2017 that was characterized by an extreme air pollution episode in Budapest. The aim of the study was to calculate daily indoor PM<sub>2.5</sub> concentrations that are comparable with the outdoor concentrations provided by the official Hungarian Air Quality Monitoring Network. Given the fact that AirVisual Pro provides data with irregular sampling frequency, data processing is expected to influence the calculated daily mean concentrations.  The results indicated that the uneven sampling frequency characteristic of AirVisual node indeed causes problems during data processing and has an effect on the calculated means. We propose a ‘best method’ for data processing for sensors with irregular sampling frequency.</p>

scholarly journals Practical Impact of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort in Kindergartens. A Case Study of Slovenia

2021 ◽  
Vol 18 (18) ◽  
pp. 9712
Author(s):  
Vesna Lovec ◽  
Miroslav Premrov ◽  
Vesna Žegarac Leskovar
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Air Temperature ◽  
Indoor Air ◽  
Carbon Dioxide Concentration ◽  
Building Stock ◽  
Practical Impact

The experimental monitoring of carbon dioxide concentration was carried out in kindergartens in Slovenia, together with indoor air temperature and relative humidity, before and during the COVID-19 pandemic. The aim of the research was to estimate the practical impact of the pandemic on indoor air quality and thermal comfort. The case study sample included buildings with different architectural typology, which are predominantly present in the building stock of Slovenia. The monitoring process lasted for 125 days before and during the COVID-19 pandemic. The results have shown a better indoor air quality in kindergartens during the pandemic, mostly due to ventilation protocols and almost imperceptibly changed indoor air temperature. The COVID-19 pandemic affected air quality in kindergarten classrooms in Slovenia by reducing the average carbon dioxide concentration when children were present in classrooms by 30%.

scholarly journals Indoor Air Quality (IAQ) Performance in Refurbished Projects: A Case Study of Two Private Schools in Selangor

2019 ◽  
Vol 266 ◽  
pp. 02013
Author(s):  
E.M.A Zawawi ◽  
A.Z Azaiz ◽  
S.N Kamaruzzaman ◽  
N.M. Ishak ◽  
F.N.M Yussof
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Private Schools ◽  
Indoor Air ◽  
Teaching And Learning ◽  
Ventilation System ◽  
Well Being ◽  
Improvement Plan ◽  
Health And Well Being

This study discusses the Indoor Air Quality (IAQ) in two refurbished private schools in Shah Alam, Selangor. The level of IAQ may affect the comfort, health and well-being of the occupants of the building. Lack of monitoring IAQ in a school may affect the academic performance of the children. The objectives of the research are to observe the ventilation system used in the selected school and the comfort of the occupants; to measure the IAQ; and finally to provide an improvement plan for better air quality. The result shows that the IAQ level of both schools was average, so both were classified as safe for occupation. It is anticipated that this study will benefit the school owners in making sure that their school buildings are conducive to teaching and learning.

CFD Analysis on Thermal Comfort and Indoor Air Quality Affected by Partitions in Air-Conditioned Building

2016 ◽  
Vol 836 ◽  
pp. 121-126
Author(s):  
Pradip Aryal ◽  
Thananchai Leephakpreeda
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Carbon Dioxide Concentration ◽  
Average Concentration ◽  
Cfd Analysis ◽  
Carbon Dioxide Concentrations

This paper presents a CFD analysis on thermal comfort and indoor air quality affected by partitions in an air-conditioned building. CFD experiments are carried out to simulate variables of indoor air before/after installation or removal of partitions. Accordingly, the Predicted Mean Vote (PMV) is determined as an indicator of thermal comfort while the carbon dioxide concentration within an air-conditioned space is used for the assessment of indoor air quality. Some simulated results are validated by measurements with good agreement where a case study is conducted in an air-conditioned space of a library. With the proposed methodology, it can be recommended in a case study that the significant effects of partition on thermal comfort are observed where the area with neutral sensation and slightly-cool sensation reduces significantly. The occupants feel uncomfortably cold after installing partition. The carbon dioxide concentrations slightly increase in some areas but the average concentration remains acceptable according to ASHRAE standard. Without the reinforcement of the air-conditioning units, the installation of partition at the desired location is not encouraged regarding to occupant’s thermal comfort and indoor air quality.

190. Permeability of Single-Family Dwellings: Implications for Indoor Air Quality

2001 ◽  
Author(s):  
M. Phillips ◽  
N. Esmen ◽  
D. Johnson ◽  
T. Hall ◽  
R. Lynch ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Single Family
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