Investigation of the Effect of the Application of Heat Transfer Turbulators on Heat Transfer Coefficient in Two-Phase Air-Water Flow, in Bubbly Pattern

Document Type : Research Article


Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-111 Tehran, I.R. IRAN


In recent years, heat transfer enhancement technology has been widely applied to heat exchangers to be used in many industrial processes. By applying this technology, the need to increase the number of heat exchangers to receive higher heat rates can be ablated that economically is of great interest. In the present work, the application of three turbulators: Wire coil insert, low density matrix insert and high density matrix insert in two-phase air-water flow was investigated. The results show that these turbulators have increased the heat transfer coefficient by 26.48, 37.52 and 59.12 percentage, respectively. By comparison, there has been seen a 13.89 percentage of deviation between the experimental and choosed reference data. Moreover, from the experimental data for that abovementationed system of Insert-applied two-phase air-water flow, separately, certain new correlations were attained and evaluated.


Main Subjects

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