Optimization of the friction factor and frictional pressure drop of R22 and R290
Today, the air-conditioning and refrigeration industry is still searching for environmentally friendly refrigerants that could replace hazardous, ozone-depleting coolants - refrigerants that behave similarly, if not better, than the present ones. The present study examines optimization of the fricti...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Article |
Published: |
Faculty of Engineering Universitas Indonesia
2016
|
Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/74361/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960119554&doi=10.14716%2fijtech.v7i2.2989&partnerID=40&md5=fe2dd4c78618531ee4bf275b0d087475 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.74361 |
---|---|
record_format |
eprints |
spelling |
my.utm.743612017-11-29T23:58:38Z http://eprints.utm.my/id/eprint/74361/ Optimization of the friction factor and frictional pressure drop of R22 and R290 Ghazali, N. Yousif, Q. A. Pamitran, A. S. Novianto, S. Ahmad, R. TJ Mechanical engineering and machinery Today, the air-conditioning and refrigeration industry is still searching for environmentally friendly refrigerants that could replace hazardous, ozone-depleting coolants - refrigerants that behave similarly, if not better, than the present ones. The present study examines optimization of the frictional pressure drop of R22 and R290 using genetic algorithm. Outcomes are compared against the measured pressure drop obtained from a horizontal 7.6 mm channel with a length of 1.07 meters. Three equations have been used for calculating the Darcy friction factor and two-phase flow pressure drop for both laminar and turbulent flow regimes in smooth and rough tubes. The effects of the different correlations for the friction factor and pressure drop utilized are demonstrated. The results illustrate that the differences between values of the Darcy friction factor are very small for the two refrigerants examined, with the frictional pressure of R-290 higher than R-22. Use of a smaller channel induced a much higher frictional pressure drop, as well. Faculty of Engineering Universitas Indonesia 2016 Article PeerReviewed Ghazali, N. and Yousif, Q. A. and Pamitran, A. S. and Novianto, S. and Ahmad, R. (2016) Optimization of the friction factor and frictional pressure drop of R22 and R290. International Journal of Technology, 7 (2). pp. 227-234. ISSN 2086-9614 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960119554&doi=10.14716%2fijtech.v7i2.2989&partnerID=40&md5=fe2dd4c78618531ee4bf275b0d087475 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
TJ Mechanical engineering and machinery |
spellingShingle |
TJ Mechanical engineering and machinery Ghazali, N. Yousif, Q. A. Pamitran, A. S. Novianto, S. Ahmad, R. Optimization of the friction factor and frictional pressure drop of R22 and R290 |
description |
Today, the air-conditioning and refrigeration industry is still searching for environmentally friendly refrigerants that could replace hazardous, ozone-depleting coolants - refrigerants that behave similarly, if not better, than the present ones. The present study examines optimization of the frictional pressure drop of R22 and R290 using genetic algorithm. Outcomes are compared against the measured pressure drop obtained from a horizontal 7.6 mm channel with a length of 1.07 meters. Three equations have been used for calculating the Darcy friction factor and two-phase flow pressure drop for both laminar and turbulent flow regimes in smooth and rough tubes. The effects of the different correlations for the friction factor and pressure drop utilized are demonstrated. The results illustrate that the differences between values of the Darcy friction factor are very small for the two refrigerants examined, with the frictional pressure of R-290 higher than R-22. Use of a smaller channel induced a much higher frictional pressure drop, as well. |
format |
Article |
author |
Ghazali, N. Yousif, Q. A. Pamitran, A. S. Novianto, S. Ahmad, R. |
author_facet |
Ghazali, N. Yousif, Q. A. Pamitran, A. S. Novianto, S. Ahmad, R. |
author_sort |
Ghazali, N. |
title |
Optimization of the friction factor and frictional pressure drop of R22 and R290 |
title_short |
Optimization of the friction factor and frictional pressure drop of R22 and R290 |
title_full |
Optimization of the friction factor and frictional pressure drop of R22 and R290 |
title_fullStr |
Optimization of the friction factor and frictional pressure drop of R22 and R290 |
title_full_unstemmed |
Optimization of the friction factor and frictional pressure drop of R22 and R290 |
title_sort |
optimization of the friction factor and frictional pressure drop of r22 and r290 |
publisher |
Faculty of Engineering Universitas Indonesia |
publishDate |
2016 |
url |
http://eprints.utm.my/id/eprint/74361/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960119554&doi=10.14716%2fijtech.v7i2.2989&partnerID=40&md5=fe2dd4c78618531ee4bf275b0d087475 |
_version_ |
1643656841932046336 |
score |
13.160551 |