An experimental investigation has been carried out to study the heat
transfer in a two-phase two-component mixture flowing upward inside
a 1" double pipe heat exchanger. The heat transfer coefficient was
measured using either air to lift the liquid (air-lift system) or
a mechanical pump.
The heat transfer coefficient results have been extensively studied
and compared with other workers' results. An attempt was made to correlate
the present heat transfer data in dimensionless correlations.
Possible factors affecting the two-phase heat transfer
coefficient have been studied with special attention being given to
the fluid properties, particularly the liquid viscosity. Experiments
were also carried out to investigate the effect of solid particles
added to a liquid flow on the measured heat transfer coefficient.
The present investigation was carried out using air as the gas-phase
ranging from 2x 10-5 up to 80 x 10-5 m3/s. Liquids used were water
and glycerol solutions with viscosity ranging from 0.75 up to 5.0
C. P. and flowrates between 4x 10-5 and 25 x 10-5 m3/s.
Void fraction and pressure drop were also measured during the
heat transfer process.
Flow pattern in gas-liquid mixture was investigated in a
perspex tube of identical dimensions to the heat exchanger tube.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/3629 |
| Date | January 1987 |
| Creators | Alahmad, Malik I.N. |
| Contributors | Hallam, R.A. |
| Publisher | University of Bradford, Postgraduate School of Studies in Chemical Engineering |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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