Indoor Air Quality – a Key Element of the Energy Performance of the Buildings

Vasile, Vasilica; Petran, Horia; Dima, Alina Mihaela; Petcu, Cristian

doi:10.1016/j.egypro.2016.09.150

Cited by 26 publications

(16 citation statements)

References 6 publications

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“…Therefore, the indoor air quality in the office building needs to be monitored as it is an essential factor in maintaining employee productivity and health (Kubba, 2009;Hussin 2017). Vasile et al (2016) suggested increasing the airtightness of the building envelope by analysing and making use of the natural ventilation system. suggested inducing optimum air movement through pores for better ventilation.…”

Section: Indoor Air Contaminantsmentioning

confidence: 99%

“…Even though there were some inadequacies in the physical results of the IAQ, the symptoms of illnesses among the space occupants are still low. Care should be taken as inadequate ventilation in the office building caused the risk of SBS and BRI, which can affect the comfort and the health of the occupants (Vasile et al, 2016;Kubba, 2009).…”

Section: Related To Indoor Air Quality Problem)mentioning

confidence: 99%

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Assessment of Indoor Air Quality in an Air-Conditioning Split Units (Acsu) Office Building

Rasli¹,

Ramli²,

Ahmad³

et al. 2021

JSSM

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The indoor air quality (IAQ) in Air-Conditioning Split Units (ACSU) offices depends mainly on recirculated indoor air that has gone through filters. Workers usually spend eight hours in the office space with restricted air circulation. An IAQ assessment was conducted at the administrative office space, USM, to investigate conditions in an ACSU office space; from 8.00 a.m. to 6.00 p.m. It starts with a walkthrough survey followed by the filling of questionnaires, with a sample size of 11 workers for insights into the office operations. The specific physical parameters (T, RH, and AM) and indoor air contaminants (CO, CH 2 O, O 3 , PM 10 , TVOC, TBC, TFC, and CO 2 ) were conducted at three points indoor and one point outdoor. The T and RH were within the acceptable range of 23-26°C and 40-70%, respectively by ICOP, while the AM was very low and less than the acceptable threshold range of 0.

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Section: Indoor Air Contaminantsmentioning

confidence: 99%

Section: Related To Indoor Air Quality Problem)mentioning

confidence: 99%

Assessment of Indoor Air Quality in an Air-Conditioning Split Units (Acsu) Office Building

Rasli¹,

Ramli²,

Ahmad³

et al. 2021

JSSM

View full text Add to dashboard Cite

show abstract

“…In other words, CO 2 levels higher than 1000 ppm denote insufficient ventilation. Exceeding this threshold can cause sick building syndrome (SBS) problems for residents, such as headaches and respiratory problems [7,[45][46][47][48]. Nevertheless, in naturally ventilated buildings, where occupants have full access to openable windows, minimal indoor CO 2 levels might be preferable.…”

Section: Window Design In Relation To Co 2 and Thermal Comfort In Naturally Ventilated Buildingsmentioning

confidence: 99%

Window Design of Naturally Ventilated Offices in the Mediterranean Climate in Terms of CO2 and Thermal Comfort Performance

Abdullah

Alibaba

2020

Sustainability

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Natural ventilation through window openings is an inexpensive and effective solution to bring fresh air into internal spaces and improve indoor environmental conditions. This study attempts to address the “indoor air quality–thermal comfort” dilemma of naturally ventilated office buildings in the Mediterranean climate through the effective use of early window design. An experimental method of computational modelling and simulation was applied. The assessments of indoor carbon dioxide (CO2) concentration and adaptive thermal comfort were performed using the British/European standard BS EN 15251:2007. The results indicate that when windows were opened, the first-floor zones were subjected to the highest CO2 levels, especially the north-facing window in the winter and the south-facing window in the summer. For a fully glazed wall, a 10% window opening could provide all the office hours inside category I of CO2 concentration. Such an achievement requires full and quarter window openings in the cases of 10% and 25% window-to-floor ratios (WFR), respectively. The findings of the European adaptive comfort showed that less than 50% of office hours appeared in category III with cross-ventilation. The concluding remarks and recommendations are presented.

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“…Air quality of indoor environments draw considerable attention from the public as well as from the researchers [1] because relatively higher pollutant concentrations in combination with longer time spent indoors can result in higher exposures and can produce adverse health effects (Ugranli et al, 2015, Zhong et al, 2017 [2,3]. All over the world [3], indoor monitoring of air compounds is an ongoing challenge (Ho et al, 2016) [4], numerous studies being in progress, whether it is office or dwelling buildings or schools [3,[5][6][7][8][9]10]. Educational institutions are one of the most studied indoor environments with a focus on kindergartens and primary or high schools, because of the high density population potentially vulnerable who are still growing, making them especially susceptible to the effects of pollution (Ugranli et al, 2015, Zhong et al, 2017 [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Our previous studies relating the monitoring of indoor air from different type of spaces showed high values of the carbon dioxide concentrations in the most of cases. For example, the average values of carbon dioxide concentration monitored during three experimental campaigns in residential spaces, first in March-May 2014, ranged between 898 ppm and 1,306 ppm, the second in September-October 2014, with average values between 811 ppm and 3,111 ppm and the third in March-April 2015, with values between 1,128 ppm and 2,490 ppm [5][6][7][8][9]. It appears that in all three monitored residential spaces there are high concentrations of carbon dioxide, which exceeded up to three times the limit allowed in indoor air.…”

Section: Introductionmentioning

confidence: 99%

Comparison of indoor air pollutants concentration in two Romanian classrooms

et al. 2018

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This paper investigates the air pollutions in space ventilated in two High School classrooms. The analysis consists of comparison of one classroom with hybrid ventilation system and another one stander-by classroom with natural ventilation. Several studies regarding indoor air quality during the experimental campaign have been done for VOC, CO 2 , CO, other pollutants, keeping monitored for humidity and temperature. The experimental demonstrated that the highest value for CO 2 in stander-by classroom is 2691 ppm and in classroom with hybrid ventilation is 1897 ppm, while values for CO are 1.1 / 1.1 ppm and VOC 0.14 / 0.06 ppm, better use hybrid ventilation.

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Indoor Air Quality – a Key Element of the Energy Performance of the Buildings

Cited by 26 publications

References 6 publications

Assessment of Indoor Air Quality in an Air-Conditioning Split Units (Acsu) Office Building

Assessment of Indoor Air Quality in an Air-Conditioning Split Units (Acsu) Office Building

Window Design of Naturally Ventilated Offices in the Mediterranean Climate in Terms of CO2 and Thermal Comfort Performance

Comparison of indoor air pollutants concentration in two Romanian classrooms

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