What is Ventilation |
| |
|
| The Dynamics Of The SVS Turbine Ventilator |
|
A well designed turbine ventilator, like the SVS, takes advantage of the wind to create a positive flow through the throat of the ventilator. The wind influences the performance of the ventilator in two ways :
1. As the Wind approaches and strikes the ventilator, it jumps, creating an area of low pressure on the leeward side of the turbine. This low pressure zone is fed by drawing air from the turbine, causing a continuous extraction of air from the building and
|
 |
| 2. As the turbine rotates, the
centripetal forces associated with the rotation fling air outwards form the tips of the vanes. Replacement air is drawn into the throat of the ventilator from the building causing continuous ventilation. |
| |
| The SVS turbine will even rotate and exhaust in the absence of wind using the thermal currents developed within the building. |
| |
IMPORTANCE OF VENTILATOR DESIGN OR PLACEMENT |
| |
| As a general rule, hot or stale air will not exhaust through an opening into which wind can blow Therefore, regular static ventilators, which allow outside wind to enter in the shed because of poor design or location on the roof, cannot be expected to exhaust because they backdraft. An efficient means of extracting warm and stale air is through roof mounted turbo ventilators, which create positive draft. Adequate low level provision for the entry of fresh air at ambient temperature should be provided. |
| |
:: Regular Static Ventilators |
| |
 |
 |
| Monitor roof / jack roof |
Poorly designed ridge / gravent ventilator |
| Receives no assistance from the wind. Back draft restricts exhaust of air from bulding. |
Do not promote adequate ventilation or air movement in building. Design can allow entry of rain. |
| |
:: Roof mounted turbo Ventilators |
|
Good Ventilation |
| Efficient turbine ventilators exhaust hot and stale air and provide a given number of air changes per hour for the building. Does not allow entry of rain. |
| |
SVS TURBINE VENTILATORS PROMOTE |
| |
|
|
|
|
Healthy living |
|
Reduction in maintenance of plant & machinery by reduction humidity level |
|
Use of renewable source of wind energy |
|
Increase in Productivity. |
|
Increased life of roofing sheets. |
|
Achievement standards. |
| |
|
| |
|
| |
|
|
| Comparison of Wind Ventilators with Electric
Powered Ventilators |
| Electric Powered Exhaust Fans |
Wind Powered "SVS" Turbine Ventilators |
| Runs on electric power hence high running power cost |
Runs on free wind power hence zero running power cost |
| Can be installed only where electric power is available |
Can be installed anywhere as it runs on wind power |
| Wall installation prevents uniform ventilation |
Rooftop installation ensures uniform ventilation |
| |
80% depreciation available as per income tax rules. |
| |
Low payback period |
|
| |
|
| |
|
