Heat Transfer In An Array Of Staggered Tube Using Computational Fluid Dynamic (CFD) Method

Mastura, Azmi (2009) Heat Transfer In An Array Of Staggered Tube Using Computational Fluid Dynamic (CFD) Method. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to carry out an analysis in order to determine the heat transfer in an array of staggered tube at a different transverse pitch to diameter ratio. Besides that, this project aims to find the best geometrical parameter of transverse pitch to diameter ratio of staggered tube with the higher performance of heat transfer rate and to validate the simulation result with experimental result with both geometrical parameter are fixed. This project is focus on the staggered tube bundle application design of condenser in air-conditioning since the heat transfer rate is not maximum. So,simulation of air passing through the heated staggered tube at arrangement of staggered tube with transverse pitch to diameter ratio, ST/D is 2.2, 2.0 1.8 and 1.6 had done to enhanced the heat transfer rate. The method used in this project is by using Computational Fluid Dynamic(CFD) with FLUENT software to simulate air flows through an array of heated staggered tube at different transverse pitch to diameter ratio, where from there we can obtain or observed the results of heat transfer rate of each cases. From the simulation result, the maximum air temperature drop occurs at transverse pitch to diameter ratio,ST/D=1.6. The staggered tube arrangement with ST/D=1.6 give better heat transfer rate from the others. The percentage different of heat transfer rate between simulation result and experimental result at inlet velocity range from 1.15m/s to 3.59m/s is in the range of 17% to 35%. Heat transfer rate is increased as the nusselt number is increased.

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