Analytical solution and experimental measurements for temperature distribution prediction of three-phase direct-contact condenser

Hameed B. Mahood, A. O. Sharif, S. Al-Aibi, D. Hawkins, R. Thorpe

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

An experimental and analytical investigation for the temperature distribution prediction of a three-phase bubble-type direct-contact condenser conducted, using a short Perspex column with 4cm internal diameter and 70cm height as a direct contact condenser. Vapour pentane and water were exploited as dispersed phase and continuous phase respectively. The effect of mass flow rate ratio (43.69%, 22.97%, 12.23%, 8.61% and 6.46%) and initial dispersed phase temperature (37.6°C, 38.4°C and 41.7°C) on the direct contact condenser output were studied. Linear temperature distributions along direct contact condensers were found experimentally, except at mass flow rate ratio 43.69% and with less magnitude at 22.97%, for different initial vapour temperatures, while theoretically this behaviour is purely linear. The results showed that the mass flow rate ratio and the hold up have a dominant effect on the direct contact condenser output. On the other hand, the initial vapour temperature had a slight effect on the direct contact condenser output temperature which indicates that the latent heat is controlled in the exchange process. The analytical model is based on the one-dimensional mass and energy equations. New expressions for average heat transfer coefficient and two-phase bubbles relative velocity are derived implicitly. Furthermore, the model correlated very well against experimental data obtained.

Original languageEnglish
Pages (from-to)538-547
Number of pages10
JournalEnergy
Volume67
DOIs
Publication statusPublished - 1 Apr 2014

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Temperature distribution
Vapors
Flow rate
Temperature
Latent heat
Contacts (fluid mechanics)
Heat transfer coefficients
Analytical models
Water

Keywords

  • Analytical modelling
  • Direct-contact heat transfer
  • Experimental measurements
  • Temperature distributions
  • Three-phase condenser

ASJC Scopus subject areas

  • Energy(all)
  • Pollution

Cite this

Analytical solution and experimental measurements for temperature distribution prediction of three-phase direct-contact condenser. / Mahood, Hameed B.; Sharif, A. O.; Al-Aibi, S.; Hawkins, D.; Thorpe, R.

In: Energy, Vol. 67, 01.04.2014, p. 538-547.

Research output: Contribution to journalArticle

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abstract = "An experimental and analytical investigation for the temperature distribution prediction of a three-phase bubble-type direct-contact condenser conducted, using a short Perspex column with 4cm internal diameter and 70cm height as a direct contact condenser. Vapour pentane and water were exploited as dispersed phase and continuous phase respectively. The effect of mass flow rate ratio (43.69{\%}, 22.97{\%}, 12.23{\%}, 8.61{\%} and 6.46{\%}) and initial dispersed phase temperature (37.6°C, 38.4°C and 41.7°C) on the direct contact condenser output were studied. Linear temperature distributions along direct contact condensers were found experimentally, except at mass flow rate ratio 43.69{\%} and with less magnitude at 22.97{\%}, for different initial vapour temperatures, while theoretically this behaviour is purely linear. The results showed that the mass flow rate ratio and the hold up have a dominant effect on the direct contact condenser output. On the other hand, the initial vapour temperature had a slight effect on the direct contact condenser output temperature which indicates that the latent heat is controlled in the exchange process. The analytical model is based on the one-dimensional mass and energy equations. New expressions for average heat transfer coefficient and two-phase bubbles relative velocity are derived implicitly. Furthermore, the model correlated very well against experimental data obtained.",
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AU - Thorpe, R.

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