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Numerical Analysis on the Condensation Heat Transfer and Pressure Drop Characteristics of the Flat Tube-Bundle Heat Exchanger  

Park, Byung-Kyu (School of Mechanical and Aerospace Engineering, Seoul Notional University)
Lee, Joon-Sik (School of Mechanical and Aerospace Engineering, Seoul Notional University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.17, no.12, 2005 , pp. 1177-1184 More about this Journal
Abstract
A numerical analysis was carried out on the heat and mass transfer, and pressure drop characteristics of the modular tube bundle heat exchanger. The finite volume method with a $k-\varepsilon$ turbulence model was used for the analysis. Due to condensation, the total heat transfer rate is observed about $4\~8\%$ higher than that on dry surfaces. Total heat transfer rate increases with increase in the velocity, temperature and relative humidity of incoming air. It also increases with decreasing the aspect ratio of heat exchanger tube. The inlet velocity of cooling water has little effect on the total heat transfer when the other conditions are fixed.
Keywords
Heat exchanger; Condensation; Flat tube-bundle; Numerical analysis; Aspect ratio;
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