Indoor Air Quality (IAQ): Accuracy of natural ventilation for temperature, air flow rate and relative humidity (RH) in school building classrooms

Research output: Contribution to journalArticle

Abstract

Indoor Air Quality (IAQ) is an essential matter in achieving students' satisfaction for the learning process. Building's orientation is a factor that may encourage sufficient natural ventilation for the classroom occupants. Inadequate ventilation is an issue for most existing classrooms. The purpose of this paper is to analyze the accuracy of natural ventilation in classrooms. Therefore, experimental on 20 classrooms has been conducted by using Multipurpose Meter at secondary school buildings in Malaysia. The findings indicated that the accuracy of natural ventilation testing was below the permissible limits throughout the hours monitored, thus this may cause potential health hazards to the students. Temperature and air flow rates were lower than 23 °C and 0.15 m/s respectively, it fulfilled the basic requirements as a standard learning environment. However, measurements taken showed the overall relative humidity (RH) in the class-rooms can be categorized as acceptable with 40% to 70% range. On the basis of these findings, it is evident that naturally ventilated classrooms are important especially due to energy efficiency, whereas mechanical ventilation should only be installed as an alternative under extremely hot weather conditions.

Original languageEnglish
Pages (from-to)42-45
Number of pages4
JournalInternational Journal of Engineering and Technology(UAE)
Volume7
Issue number3
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

School buildings
Indoor Air Pollution
Humidity
Air quality
Ventilation
Atmospheric humidity
Air
Flow rate
Temperature
Learning
Students
Health hazards
Malaysia
Weather
Artificial Respiration
Energy efficiency
Efficiency
Health
Testing

Keywords

  • Air flow
  • Classroom
  • Humidity
  • Natural ventilation
  • Temperature

ASJC Scopus subject areas

  • Biotechnology
  • Computer Science (miscellaneous)
  • Environmental Engineering
  • Chemical Engineering(all)
  • Engineering(all)
  • Hardware and Architecture

Cite this

@article{db82de77b0b8469ab12dcf341031c2db,
title = "Indoor Air Quality (IAQ): Accuracy of natural ventilation for temperature, air flow rate and relative humidity (RH) in school building classrooms",
abstract = "Indoor Air Quality (IAQ) is an essential matter in achieving students' satisfaction for the learning process. Building's orientation is a factor that may encourage sufficient natural ventilation for the classroom occupants. Inadequate ventilation is an issue for most existing classrooms. The purpose of this paper is to analyze the accuracy of natural ventilation in classrooms. Therefore, experimental on 20 classrooms has been conducted by using Multipurpose Meter at secondary school buildings in Malaysia. The findings indicated that the accuracy of natural ventilation testing was below the permissible limits throughout the hours monitored, thus this may cause potential health hazards to the students. Temperature and air flow rates were lower than 23 °C and 0.15 m/s respectively, it fulfilled the basic requirements as a standard learning environment. However, measurements taken showed the overall relative humidity (RH) in the class-rooms can be categorized as acceptable with 40{\%} to 70{\%} range. On the basis of these findings, it is evident that naturally ventilated classrooms are important especially due to energy efficiency, whereas mechanical ventilation should only be installed as an alternative under extremely hot weather conditions.",
keywords = "Air flow, Classroom, Humidity, Natural ventilation, Temperature",
author = "Norsafiah Norazman and {Che Ani}, {Adi Irfan} and Ja`Afar, {Nor Haslina} and {Muhamad Azry}, Khoiry",
year = "2018",
month = "1",
day = "1",
doi = "10.14419/ijet.v7i3.9.15271",
language = "English",
volume = "7",
pages = "42--45",
journal = "International Journal of Engineering and Technology(UAE)",
issn = "2227-524X",
publisher = "Science Publishing Corporation Inc",
number = "3",

}

TY - JOUR

T1 - Indoor Air Quality (IAQ)

T2 - Accuracy of natural ventilation for temperature, air flow rate and relative humidity (RH) in school building classrooms

AU - Norazman, Norsafiah

AU - Che Ani, Adi Irfan

AU - Ja`Afar, Nor Haslina

AU - Muhamad Azry, Khoiry

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Indoor Air Quality (IAQ) is an essential matter in achieving students' satisfaction for the learning process. Building's orientation is a factor that may encourage sufficient natural ventilation for the classroom occupants. Inadequate ventilation is an issue for most existing classrooms. The purpose of this paper is to analyze the accuracy of natural ventilation in classrooms. Therefore, experimental on 20 classrooms has been conducted by using Multipurpose Meter at secondary school buildings in Malaysia. The findings indicated that the accuracy of natural ventilation testing was below the permissible limits throughout the hours monitored, thus this may cause potential health hazards to the students. Temperature and air flow rates were lower than 23 °C and 0.15 m/s respectively, it fulfilled the basic requirements as a standard learning environment. However, measurements taken showed the overall relative humidity (RH) in the class-rooms can be categorized as acceptable with 40% to 70% range. On the basis of these findings, it is evident that naturally ventilated classrooms are important especially due to energy efficiency, whereas mechanical ventilation should only be installed as an alternative under extremely hot weather conditions.

AB - Indoor Air Quality (IAQ) is an essential matter in achieving students' satisfaction for the learning process. Building's orientation is a factor that may encourage sufficient natural ventilation for the classroom occupants. Inadequate ventilation is an issue for most existing classrooms. The purpose of this paper is to analyze the accuracy of natural ventilation in classrooms. Therefore, experimental on 20 classrooms has been conducted by using Multipurpose Meter at secondary school buildings in Malaysia. The findings indicated that the accuracy of natural ventilation testing was below the permissible limits throughout the hours monitored, thus this may cause potential health hazards to the students. Temperature and air flow rates were lower than 23 °C and 0.15 m/s respectively, it fulfilled the basic requirements as a standard learning environment. However, measurements taken showed the overall relative humidity (RH) in the class-rooms can be categorized as acceptable with 40% to 70% range. On the basis of these findings, it is evident that naturally ventilated classrooms are important especially due to energy efficiency, whereas mechanical ventilation should only be installed as an alternative under extremely hot weather conditions.

KW - Air flow

KW - Classroom

KW - Humidity

KW - Natural ventilation

KW - Temperature

UR - http://www.scopus.com/inward/record.url?scp=85049794329&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049794329&partnerID=8YFLogxK

U2 - 10.14419/ijet.v7i3.9.15271

DO - 10.14419/ijet.v7i3.9.15271

M3 - Article

VL - 7

SP - 42

EP - 45

JO - International Journal of Engineering and Technology(UAE)

JF - International Journal of Engineering and Technology(UAE)

SN - 2227-524X

IS - 3

ER -