A NEW DESIGN OF THE MINARET AS A TWO - SIDES WIND CATCHER INTEGRATED WITH THE WING WALL FOR PASSIVE EVAPORATIVE COOLING IN HOT CLIMATES

• Main Author: JAMAL ABED AL WAHID JASSIM
• Format: Article
• Language: English
• Published: Taylor's University 2018-11-01
• Series: Journal of Engineering Science and Technology
• Subjects: Earth-air tube; Environmental design; Heat exchanger; Hot day; Minarets; Passive ventilation; Wind tower
• Online Access: http://jestec.taylors.edu.my/Vol%2013%20issue%2011%20November%202018/13_11_29.pdf

Recent studies awareness of reducing fossil energy consumption that result searching for Natural energy resources and renewable. One environmental solution is the application of natural ventilation systems. However, there is a reluctance to use them due to low wind speed. This paper aims to provide a new design of the minaret, which employs as a two- sides wind catcher that integrated with the wing wall to improve the performance of natural ventilation and a heat exchange between the earth to air MWETHE. Part of the minaret and a pipe inside the soil and the lining of the minaret provides a water spray system. Air moves due to differing air column pressure. This research used two methods of investigation; the experimental test represents the wind tunnel and the other test, simulate the dynamics of computational fluids (CFD). Two-sided wind catcher models have been tested. It has been observed that the values of the angles of the 15-25 wing wall represent the optimum angles for an increase of cold airflow within the space of up to 2.5 m/s. The verification showed a good convergence between the two tests. The present study shows that the design of the minaret wind catcher within the evaporative cooling system, which is effective in achieving thermal comfort in hot, dry climates. The results have shown that increased airflow speed leads to a reduction in air temperature; the air temperature has dropped to 18 °C and improved humidity of 24% in summer, Increase in temperature 6 °C in winter. It can be inferred that the system reduces the dependence on energy. Finally, it was found that the new design is as close to the indicators ASHRAE 62.1. An efficient system ca