Simulation Studies on the Effect of Porous Twisted Plate Inserts on the Performance of Fire Tube Steam Packaged Boiler

S. Hassan; M. K. Roslim; R. M. Zain

Authors

S. Hassan Mechanical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak Darul Ridzuan, Malaysia
M. K. Roslim Mechanical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak Darul Ridzuan, Malaysia
R. M. Zain Mechanical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak Darul Ridzuan, Malaysia

Keywords:

fire tube boiler, oil plate, heat transfer enhancemen, laminar flow , turbulent flow , umber of holes , diameter of holes

Abstract

The effects of porous twisted plate as insert on heat transfer performance and flow characteristic in fire tube boiler are being investigated by simulation in this present article. The porous twisted plate was designed with different number of holes (1, 2, 3 and 4) with variation ranges of diameter (4mm, 8mm, 10mm, and 15mm). The designs was simulated by using ANSYS Fluent software in laminar flow condition with different Reynolds number (Re = 1350-1500). The data collected was compared to the plain twisted plate. The result shows that invention of holes on the twisted plate creates lower surface area. Nevertheless, the velocity is increase with increasing number of holes and reduce diameter of holes. Besides, the increasing velocity of the flow inside the tube was approached the turbulence flow thus allowing more heat transfer across the tube. The larger number of holes and the smaller the diameter of holes resulting better heat transfer rate.