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Heat Transfer Enhancement in Shell and Tube Condenser


Author : Priyanka Padgil, S.H. Barhatte and P.E.Choudhary

Pages : 368-373
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Abstract

To increase the efficiency of the heat exchanger, the heat transfer enhancement techniques are utilized. This can be achieved once the heat transfer power of a given device is magnified or once the pressure losses generated by the device are reduced. Heat transfer enhancement is require to achieve a high heat transfer rate using minimum pumping power, to make the equipment compact, to minimize cost of energy and material, to get high heat transfer effectiveness, to increase efficiency etc. Condensers are primarily heat exchangers within which the refrigerant undergoes a phase transition which have various designs and come in many sizes. Shell and tube condenser is the most common type of condenser used in systems from 2 TR up to thousands of TR capacity. The Condensation of steam on single horizontal copper tube in a shell and tube condenser has been investigated using experimental and theoretical ways during this study. The outer surface of the tube was changed by brazing it with a copper wire lengthwise and helically to enhance the heat transfer constant. The result of varied the pitch of the helically brazed wire was studied with twenty five millimeter and thirty five millimeter pitch. Lengthwise Wire Brazed (LOWIB) and Helically Wire Brazed (HEWIB) Copper tubes with pitch twenty five millimeter and thirty five millimeter were found to extend the heat transfer constant by an element of about 1.5, 2 and 1.2 severally.

Keywords: Condensation, Enhancement of heat transfer constant, wire wrapped tube.

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