II. ROOFTOP VENTILATOR Rooftop ventilators are generally implemented on the roofs of industries, workshops, ware houses etc. for ventilation
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2016 IEEE
purposes. They do not require electricity for its working. Being an eco-friendly green product. It helps in reducing the carbon footprint and aid in energy savings. They are virtually maintenance free. They do not create any noise during its operation and are leak and rain proof. It removes hot air in summer and moisture laden air in winter from the interior of the buildings.
Rooftop ventilators rotate due to two principles. First is that the air flows from high temperature area to low temperature area or from high pressure area to low pressure area. Second is due to the slight breeze that exist in the surroundings. Figure 1 shows a typical Rooftop ventilator and Figure 2 gives a pictorial description of the advantages of rooftop ventilators during summer and winter seasons (Source: Technical sheet of Windmaster Tornado Turbine Roof Ventilator for Domestic Ventilation).