CFD Analysis of a Passive Cooling Wind Catcher with Heat Pipe Technology | 2019
- Nirosh Jayasuriya
- May 31, 2020
- 2 min read
Updated: Jun 7, 2020
University of Moratuwa, Supervised by Dr. C. Ranasinghe
A wind catcher is a traditional Iranian architectural element to create natural ventilation in buildings. Pressure differentials around the buildings induced by wind movement and temperature difference. Though the moment of air caused by the wind catcher will lead to a cooling sensation for occupants in higher temperature areas. What wind catcher mainly does is maintain a wind flow through the selected area. Introducing cooling mechanisms such as heat pipe causes to enhance the cooling effect in the buildings.
The wind catcher sustains natural ventilation through indoor spaces through wind-driven airflow as well as buoyancy effect. Wind catchers are typically tall structures projecting on the top of the roof of buildings. This allows the wind catcher to capture air at high velocity and supply it into space. The proposed wind catcher presented in this study uses heat transfer devices involving heat pipes to provide a continuous cooling loop. Due to the absence of moving parts, the system reliability gets high.
The purpose of CFD simulation is to investigate the air temperature decrement due to the effect of wind catcher. This work was to address the gap in the literature detailed above by performing laboratory and field test analysis.
Ventilation and air conditioning systems consume more than 60% of the total energy use of buildings. In hot climates, such as Middle East countries, the percentage of energy consumption by air conditioning is significantly larger. The rapid growth of the development of infrastructure had increased energy consumption at a faster rate. Wind catcher can be shown as a sustainable solution for that problem because of no need of any electrical input to the device. Some of Simulated results are shown below pictures.
1.Basic Structure
2. Mesh Generation
3.Results
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