Wind Powered Exhaust Fans

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Wind Powered Exhaust Fans
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The Product
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• Wind Ventilator utilizes natural wind instead of
  electrical energy for the ventilation process
• It ensures uncut supply of fresh air once
  installed without any recurring costs

• It conserves energy as it used non conventional
  wind energy for operation
• It saves environment by avoiding emission of CO2
  as generation of electricity is being avoided

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Key Benefits
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• No electricity required energy conservation
• Improved productivity due to hygienic work
  environment
• No maintenance required
• No danger of any electrical safety hazards
• Works effectively at wind speeds as low as 2 mph
• No manpower or other recurring costs
• Assured 24 x 7 ventilation throughout the year

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How it Works

• Wind Ventilators are placed on rooftops of
  industrial sheds
• Industrial activity generates heat and hot air
  being lighter moves upwards
• The lighter air gets accumulated in the turbine
  of the Wind Ventilator
• As the hot air tries to escape from the turbine,
  it exerts a backwards thrust on the vanes and
  sets them in a rotational movement
• This rotation creates a suction which pulls more
  hot air from the room into the turbine

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How it Works contd.

• With the help of natural blowing over the
  rooftop, the RPM of the turbine increases
• This increases the discharge capacity of the
  Shrijee Wind Ventilator
• As the hot air is thrown out, fresh air starts
  entering through windows and door openings
• The Wind Ventilator thus generates continuous air
  circulation within the room resulting in cooler
  inside temperatures and discharge of foul smells
• Hygienic work conditions result in improved
  productivity

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Case Study - Background

• In 2002, Hero Honda was using 125 electrically
  driven exhaust fans for the ventilation process
  in their Dharuheda factorys frame assembly
• They were consuming 1,253 KWH of power per month
  (assuming 25 working days in 2 shifts)
• This was resulting in a monthly electricity cost
  of Rs. 1,49,625
• In addition to this cost, there were maintenance
  costs and man power costs
• Also the process was not eco-friendly because
  production of electricity results in C02 emission

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Challenge

• Hero Honda wanted
• Eco-friendly process
• Save their huge power costs
• No compromise on their employees health and well
  being.

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Solution

• Hero Honda replaced 125 electric driven exhaust
  fans with 225 rooftop wind ventilators
• They incurred an initial investment cost of
  Rs.10.63 Lacs
• After installation there were no additional costs
  such as electricity costs or maintenance costs
• Hero Honda conserved 1253 KW of power per month
  and saved Rs. 1,49,625 in electricity bill per
  month
• Approximately 12 Ton of CO2 emission avoided per
  annum

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Payback
One time installation cost with Wind Ventilator
Cumulative electricity bill with Exhaust fan
Hero Honda recovered the installation cost of Rs.
10.63 Lacs in 7 months and 13 days by saving
Rs.1,49,625 in electricity bill per month
The graph does not take into consideration the
initial investment on installation of exhaust
fans but it only considers the electrical costs
(Rs. 1,49,625 per month) incurred by these
exhaust fans.
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Images of installed Wind Ventilators
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Want to more about Wind Ventilators?

• http//www.shrijee.com/wind