Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor

Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor

A recent development in oscillatory baffled reactor technology is down-scaling the reactor, so that it can be used for the applications such as small-scale continuous production of bioethanol. A mesoscale oscillatory baffled reactor (MOBR) with central baffle system was developed and fabricated at m...

Full description

Bibliographic Details
Main Authors: Wan Mohd Hafizuddin, Wan Yussof, S. S., Bahri, Phan, A. N., Harvey, A. P.
Format: Article
Language:English
Published: Bangladesh University of Engineering and Technology 2017
Subjects:
QR Microbiology
Online Access:http://umpir.ump.edu.my/id/eprint/19871/
http://umpir.ump.edu.my/id/eprint/19871/
http://umpir.ump.edu.my/id/eprint/19871/1/19-Syam%20-%20CERB_2017.pdf
id ump-19871
recordtype eprints
spelling ump-198712018-01-09T07:00:14Z http://umpir.ump.edu.my/id/eprint/19871/ Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor Wan Mohd Hafizuddin, Wan Yussof S. S., Bahri Phan, A. N. Harvey, A. P. QR Microbiology A recent development in oscillatory baffled reactor technology is down-scaling the reactor, so that it can be used for the applications such as small-scale continuous production of bioethanol. A mesoscale oscillatory baffled reactor (MOBR) with central baffle system was developed and fabricated at mesoscales (typically 5 mm diameter). This present work aims to analyse the mixing conditions inside the MOBR by evaluating the residence time distribution (RTD) against the dynamic parameters of net flow Reynolds number (Ren) at 4.2, 8.4 and 12.6 corresponding to flow rates of 1.0, 2.0 and 3.0 ml/min respectively, oscillatory Reynolds number (Reo) between 62 to 622, and Strouhal number (Str) between 0.1 to 1.59. The effect of oscillation frequency and amplitude on RTD performance were studied at frequency, amplitude, and velocity ratio ranging from 4 to 8 Hz, 1 to 4 mm and 1 to 118, respectively. Effect of oscillation frequency has resulted in the variance of the RTD increased as the oscillation frequency increased from 5 Hz to 8 Hz and peak at 6 Hz of 0.264. A further increase in the frequency above 5 Hz caused the RTD to slightly broaden and positively skewed. At frequency of 5 Hz, the RTD profiles were close to Gaussian form for all tested amplitude values from 1 mm to 4 mm. At low amplitudes, i.e. xo = 1 mm, the variance exhibited its minimum around 0.842 at Reo =156. An increase in Reo above 300 resulted in increased in the variance rapidly to 1.28, and later eliminated the plug flow behaviour and the reactor behaved similar to a single continuous stirred tank reactor. Bangladesh University of Engineering and Technology 2017-06-20 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/19871/1/19-Syam%20-%20CERB_2017.pdf Wan Mohd Hafizuddin, Wan Yussof and S. S., Bahri and Phan, A. N. and Harvey, A. P. (2017) Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor. Chemical Engineering Research Bulletin, 19 (2017). pp. 111-117. ISSN 2072-9510 https://www.banglajol.info/index.php/CERB/article/view/33804
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic QR Microbiology
spellingShingle QR Microbiology
Wan Mohd Hafizuddin, Wan Yussof
S. S., Bahri
Phan, A. N.
Harvey, A. P.
Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
description A recent development in oscillatory baffled reactor technology is down-scaling the reactor, so that it can be used for the applications such as small-scale continuous production of bioethanol. A mesoscale oscillatory baffled reactor (MOBR) with central baffle system was developed and fabricated at mesoscales (typically 5 mm diameter). This present work aims to analyse the mixing conditions inside the MOBR by evaluating the residence time distribution (RTD) against the dynamic parameters of net flow Reynolds number (Ren) at 4.2, 8.4 and 12.6 corresponding to flow rates of 1.0, 2.0 and 3.0 ml/min respectively, oscillatory Reynolds number (Reo) between 62 to 622, and Strouhal number (Str) between 0.1 to 1.59. The effect of oscillation frequency and amplitude on RTD performance were studied at frequency, amplitude, and velocity ratio ranging from 4 to 8 Hz, 1 to 4 mm and 1 to 118, respectively. Effect of oscillation frequency has resulted in the variance of the RTD increased as the oscillation frequency increased from 5 Hz to 8 Hz and peak at 6 Hz of 0.264. A further increase in the frequency above 5 Hz caused the RTD to slightly broaden and positively skewed. At frequency of 5 Hz, the RTD profiles were close to Gaussian form for all tested amplitude values from 1 mm to 4 mm. At low amplitudes, i.e. xo = 1 mm, the variance exhibited its minimum around 0.842 at Reo =156. An increase in Reo above 300 resulted in increased in the variance rapidly to 1.28, and later eliminated the plug flow behaviour and the reactor behaved similar to a single continuous stirred tank reactor.
format Article
author Wan Mohd Hafizuddin, Wan Yussof
S. S., Bahri
Phan, A. N.
Harvey, A. P.
author_facet Wan Mohd Hafizuddin, Wan Yussof
S. S., Bahri
Phan, A. N.
Harvey, A. P.
author_sort Wan Mohd Hafizuddin, Wan Yussof
title Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
title_short Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
title_full Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
title_fullStr Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
title_full_unstemmed Effect of Oscillation Amplitude on the Residence Time Distribution for the Mesoscale Oscillatory Baffled Reactor
title_sort effect of oscillation amplitude on the residence time distribution for the mesoscale oscillatory baffled reactor
publisher Bangladesh University of Engineering and Technology
publishDate 2017
url http://umpir.ump.edu.my/id/eprint/19871/
http://umpir.ump.edu.my/id/eprint/19871/
http://umpir.ump.edu.my/id/eprint/19871/1/19-Syam%20-%20CERB_2017.pdf
first_indexed 2023-09-18T22:28:29Z
last_indexed 2023-09-18T22:28:29Z
_version_ 1777416126715658240

Similar Items