Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys

Abstract In this paper, the indoor air pollution was investigated inside an educational building which contains air pollutants with elevated concentrations. A field study was conducted in a naturally ventilated, single-faceted lecture’s hall to evaluate the indoor air quality (IAQ). Both air velocit...

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Autores principales:	Ahmed Fikry, Asmaa Elsayed
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Indoor air quality Natural ventilation Carbon dioxide (CO2) Computational fluid dynamics (CFD) Lecture hall Solar chimney Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/2b53bad453974fc980295734acfaa269
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spelling	oai:doaj.org-article:2b53bad453974fc980295734acfaa2692021-11-21T12:14:56ZImproving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys10.1186/s44147-021-00027-71110-19032536-9512https://doaj.org/article/2b53bad453974fc980295734acfaa2692021-11-01T00:00:00Zhttps://doi.org/10.1186/s44147-021-00027-7https://doaj.org/toc/1110-1903https://doaj.org/toc/2536-9512Abstract In this paper, the indoor air pollution was investigated inside an educational building which contains air pollutants with elevated concentrations. A field study was conducted in a naturally ventilated, single-faceted lecture’s hall to evaluate the indoor air quality (IAQ). Both air velocity and carbon dioxide (CO2) concentrations were measured at the respiratory area level to compare these values with ASHRAE standard (62.01-2019). The computational fluid dynamics (CFD) 3D model was utilized to predict the air velocity, and CO2 concentrations, and to validate the measured air concentrations. The measured results fairly agree with the numerical CFD data with a 6.2% difference between both values. This paper deals with experimental work to study the effect of the cross-section area, the number, and the height of the solar chimneys. The results showed that using solar chimneys improved the natural ventilation in the hall and minimized the CO2 concentrations. Additionally, using the chimney cross-section area of 0.250.25 m, 0.300.30 m, and 0.400.40 to 0.500.50 m can reduce the CO2 concentrations to (3%, 6.2%, 6.4%, and 6.7%, respectively). While using three chimneys instead of only one, the ventilation flow rate increased from 61 to 70.9%. The effect of the height of the chimney on the average of CO2 concentrations inside the hall was examined. The modeled height rates (1, 3, 5, and 7 m, respectively) were improved to 26%, 33.6%, and 48.7%, respectively.Ahmed FikryAsmaa ElsayedSpringerOpenarticleIndoor air qualityNatural ventilationCarbon dioxide (CO2)Computational fluid dynamics (CFD)Lecture hallSolar chimneyEngineering (General). Civil engineering (General)TA1-2040ENJournal of Engineering and Applied Science, Vol 68, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Indoor air quality Natural ventilation Carbon dioxide (CO2) Computational fluid dynamics (CFD) Lecture hall Solar chimney Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Indoor air quality Natural ventilation Carbon dioxide (CO2) Computational fluid dynamics (CFD) Lecture hall Solar chimney Engineering (General). Civil engineering (General) TA1-2040 Ahmed Fikry Asmaa Elsayed Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
description	Abstract In this paper, the indoor air pollution was investigated inside an educational building which contains air pollutants with elevated concentrations. A field study was conducted in a naturally ventilated, single-faceted lecture’s hall to evaluate the indoor air quality (IAQ). Both air velocity and carbon dioxide (CO2) concentrations were measured at the respiratory area level to compare these values with ASHRAE standard (62.01-2019). The computational fluid dynamics (CFD) 3D model was utilized to predict the air velocity, and CO2 concentrations, and to validate the measured air concentrations. The measured results fairly agree with the numerical CFD data with a 6.2% difference between both values. This paper deals with experimental work to study the effect of the cross-section area, the number, and the height of the solar chimneys. The results showed that using solar chimneys improved the natural ventilation in the hall and minimized the CO2 concentrations. Additionally, using the chimney cross-section area of 0.250.25 m, 0.300.30 m, and 0.400.40 to 0.500.50 m can reduce the CO2 concentrations to (3%, 6.2%, 6.4%, and 6.7%, respectively). While using three chimneys instead of only one, the ventilation flow rate increased from 61 to 70.9%. The effect of the height of the chimney on the average of CO2 concentrations inside the hall was examined. The modeled height rates (1, 3, 5, and 7 m, respectively) were improved to 26%, 33.6%, and 48.7%, respectively.
format	article
author	Ahmed Fikry Asmaa Elsayed
author_facet	Ahmed Fikry Asmaa Elsayed
author_sort	Ahmed Fikry
title	Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
title_short	Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
title_full	Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
title_fullStr	Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
title_full_unstemmed	Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys
title_sort	improving the indoor air quality (iaq) in naturally ventilated lecture hall with a single facade by solar chimneys
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/2b53bad453974fc980295734acfaa269
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Improving the indoor air quality (IAQ) in naturally ventilated lecture hall with a single facade by solar chimneys

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