Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations

To attain the high level of cleanliness which are required by clean rooms of the semi-conductor industries, High efficiency particulate arrestance filters, or better known as HEPA filters, are required. However, these HEPA filters are costly and are required to be replaced frequently. Therefore incr...

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Main Author: Muhammad Hanief Bin Sarib
Other Authors: Chua Leok Poh
Format: Final Year Project
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10356/72299
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-722992023-03-04T19:18:57Z Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations Muhammad Hanief Bin Sarib Chua Leok Poh School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering To attain the high level of cleanliness which are required by clean rooms of the semi-conductor industries, High efficiency particulate arrestance filters, or better known as HEPA filters, are required. However, these HEPA filters are costly and are required to be replaced frequently. Therefore increasing their lifespan is desirable. The common use of pre-filters to improve this is well known. In this project, acoustic methods such as acoustic tweezing are identified as an alternative or an additional layer to the existing pre-filter to improve the efficiency and lifespan of the HEPA filters. Various agglomeration mechanisms are also considered. In part one of this project, Styrofoam balls are simulated as monodispersed aerosols. Standing waves of low frequencies from 100Hz to 2000Hz are identified. This information is used for part two and three of this project, designing and construction of a prototype acoustic agglomeration device for pre-filters. It was noted that at standing wave frequencies, it increases the efficiency of the grade G4 pre-filter that was used by almost 50%. This could possibly result in massive cost reduction in maintaining the HEPA filters. However, more studies need to be conducted on ultrasonic frequencies for this technique to be a viable option in the industry. Bachelor of Engineering (Mechanical Engineering) 2017-06-01T06:57:09Z 2017-06-01T06:57:09Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/72299 en Nanyang Technological University 64 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
spellingShingle DRNTU::Engineering::Mechanical engineering
Muhammad Hanief Bin Sarib
Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
description To attain the high level of cleanliness which are required by clean rooms of the semi-conductor industries, High efficiency particulate arrestance filters, or better known as HEPA filters, are required. However, these HEPA filters are costly and are required to be replaced frequently. Therefore increasing their lifespan is desirable. The common use of pre-filters to improve this is well known. In this project, acoustic methods such as acoustic tweezing are identified as an alternative or an additional layer to the existing pre-filter to improve the efficiency and lifespan of the HEPA filters. Various agglomeration mechanisms are also considered. In part one of this project, Styrofoam balls are simulated as monodispersed aerosols. Standing waves of low frequencies from 100Hz to 2000Hz are identified. This information is used for part two and three of this project, designing and construction of a prototype acoustic agglomeration device for pre-filters. It was noted that at standing wave frequencies, it increases the efficiency of the grade G4 pre-filter that was used by almost 50%. This could possibly result in massive cost reduction in maintaining the HEPA filters. However, more studies need to be conducted on ultrasonic frequencies for this technique to be a viable option in the industry.
author2 Chua Leok Poh
author_facet Chua Leok Poh
Muhammad Hanief Bin Sarib
format Final Year Project
author Muhammad Hanief Bin Sarib
author_sort Muhammad Hanief Bin Sarib
title Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
title_short Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
title_full Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
title_fullStr Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
title_full_unstemmed Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
title_sort design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations
publishDate 2017
url http://hdl.handle.net/10356/72299
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