Effect of Converging Duct on Solar Chimney

Authors

  • Abdul Muin Shaari Center for Energy and Industrial Environment Studies, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • Kamil Abdullah Center for Energy and Industrial Environment Studies, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • Mohd Faizal Mohideen Batcha Center for Energy and Industrial Environment Studies, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • Hamidon Salleh Center for Energy and Industrial Environment Studies, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • Makatar Wae-Hayee Energy Research Centre and Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand

Keywords:

Solar chimney, natural convection, sustainable technology

Abstract

Solar chimney is very useful in terms of improving indoor thermal comfort. There are

not many studies or simulation that have been done for a converging duct of solar

chimney A CFD model of a solar chimney is simulated in this study using ANSYS

Workbench 19.2 to find out the effect of convergent of the solar chimney to the

velocity in the solar chimney and the air changes per hour in the developed numerical

model. Solar chimney is mainly used in hot climate as a passive solar cooling system

that can regulate the temperature and increases ventilation. The data needed to

simulate the numerical model is taken from previous study. Using fluid flow (CFX) a 2D

CFD steady state is simulated by 10 mm of thickness for the model. Four openings were

set up to let air leave and enter the cabin. There were four configurations of bottom

top ratio were studied, 1:1, 1:0.8, 1:0.75 and 1:0.5. The 1:0.5 ratio gives the highest

outlet velocity while the 1:1 ratio have the highest air changes per hour. Converging

the solar chimney bring the solar chimney performance down.

 

 

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Published

2024-10-14

Issue

Vol. 12 No. 3: March (2020)

Section

Articles

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