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RESEARCH PAPER

The Condensation of Ammonia-Water Mixtures in a Horizontal Shell and Tube Condenser

[+] Author and Article Information
Chris Philpott, Joe Deans

Department of Mechanical Engineering, University of Auckland, New Zealand

J. Heat Transfer 126(4), 527-534 (May 24, 2004) (8 pages) doi:10.1115/1.1778188 History: Received June 02, 2003; Revised May 24, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic of ammonia-water test condenser
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Condensation heat transfer coefficient at various tube heat loads. (Inset shows experimental results relative to Nusselt analysis (Eq. 3).)
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Condenser bulk vapor ammonia concentration. (Note the Trend lines were derived from the numerical model and that they are depicted as a continuous line for clarity.)
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Variation in tube wall temperature profile with ammonia concentration. (The wall temperature around the circumference of the tube has been normalized about the 180 deg tube wall temperature, i.e., Tw,θ−Tw,θ=180, to illustrate the tube wall temperature profile at various ammonia concentrations more clearly.)
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Sectional condensation heat transfer coefficients
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Ratio of sectional condensation heat transfer coefficient to Nusselt’s prediction
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Average tube condensation heat transfer coefficient
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Ratio of overall condensation heat transfer coefficient to Nusselt’s prediction
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Condenser pressure variation with inlet vapor ammonia concentration
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Vapor and condensate film resistances
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(a–l) The condensate film at various vapor ammonia concentrations and positions within the condenser (left=section 6, middle=section 4, right=section 2)

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