Investigation of particle penetration through building cracks

Contaminants may be carried by air particles from outdoors to indoors through cracks in the building envelop. This project aimed to experimentally investigate the efficiency of airborne particles can penetrate through those building cracks. Two chambers were made and linked a slot that mimics a buil...

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Main Author: Yu, Zhou Hang.
Other Authors: School of Mechanical and Aerospace Engineering
Format: Final Year Project
Language:English
Published: 2011
Subjects:
Online Access:http://hdl.handle.net/10356/45946
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-459462023-03-04T19:30:31Z Investigation of particle penetration through building cracks Yu, Zhou Hang. School of Mechanical and Aerospace Engineering Wan Man Pun DRNTU::Engineering::Mechanical engineering::Fluid mechanics Contaminants may be carried by air particles from outdoors to indoors through cracks in the building envelop. This project aimed to experimentally investigate the efficiency of airborne particles can penetrate through those building cracks. Two chambers were made and linked a slot that mimics a building crack. A small pressure difference was established between the two chambers, which induce the air flow through the slot. Indoor refers to home and factory building and outdoor refers to the environment surrounding the former two. The crack size for the experiment can be adjusted by adding the number of slots and pressure difference of the two chambers could be varied. Experiment data was collected base on the particle concentration, pressure difference of the two chambers and the crack size. Slot has a triangular cross sectional area, its height is 4 mm, width is 3 mm and length is 50mm and 150mm. increase number of slots or the length of the slots, the penetration result will be affacted. Particle penetration diminishes for larger particles as well as small pressure difference. Particle penetration increases when the number of slots increase (the flow cross sectional area increase) for all particle sizes. Bachelor of Engineering (Mechanical Engineering) 2011-06-24T08:24:14Z 2011-06-24T08:24:14Z 2011 2011 Final Year Project (FYP) http://hdl.handle.net/10356/45946 en Nanyang Technological University 59 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering::Fluid mechanics
spellingShingle DRNTU::Engineering::Mechanical engineering::Fluid mechanics
Yu, Zhou Hang.
Investigation of particle penetration through building cracks
description Contaminants may be carried by air particles from outdoors to indoors through cracks in the building envelop. This project aimed to experimentally investigate the efficiency of airborne particles can penetrate through those building cracks. Two chambers were made and linked a slot that mimics a building crack. A small pressure difference was established between the two chambers, which induce the air flow through the slot. Indoor refers to home and factory building and outdoor refers to the environment surrounding the former two. The crack size for the experiment can be adjusted by adding the number of slots and pressure difference of the two chambers could be varied. Experiment data was collected base on the particle concentration, pressure difference of the two chambers and the crack size. Slot has a triangular cross sectional area, its height is 4 mm, width is 3 mm and length is 50mm and 150mm. increase number of slots or the length of the slots, the penetration result will be affacted. Particle penetration diminishes for larger particles as well as small pressure difference. Particle penetration increases when the number of slots increase (the flow cross sectional area increase) for all particle sizes.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Yu, Zhou Hang.
format Final Year Project
author Yu, Zhou Hang.
author_sort Yu, Zhou Hang.
title Investigation of particle penetration through building cracks
title_short Investigation of particle penetration through building cracks
title_full Investigation of particle penetration through building cracks
title_fullStr Investigation of particle penetration through building cracks
title_full_unstemmed Investigation of particle penetration through building cracks
title_sort investigation of particle penetration through building cracks
publishDate 2011
url http://hdl.handle.net/10356/45946
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