EFFECTS OF THE PITCH OF IN-LINE DELTA WINGLET VORTEX GENERATORS ON HEAT TRANSFER OF A FINNED THREE-ROW FLAT TUBE BANK |
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Authors: | Y H Zhang |
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Institution: | Department of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, People’s Republic of China |
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Abstract: | The naphthalene sublimation technique via the heat and mass transfer analogy is used to study the effects of the pitch of in-line delta winglet vortex generators on heat transfer and pressure drop of a finned three-row flat tube bank. The results show that the pitch of the in-line vortex generator has a strong effect on the heat transfer performance. The optimal pitch depends on the performance evaluation criteria. With the configurations considered in this article, for identical pumping power or combined constraint, a small pitch of 0.33 is best; for the identical pressure drop constraint, a value of 0.42 is best. |
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Keywords: | thermal radiation extinction coefficient Monte Carlo porous media packed bed |
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