YOU GET THE BEST FREE GRAVITY AIR FLOW AND THE BEST POWERED AIR FLOW
The reason is the turbine rain hat. Air can go up and out freely. Others use big boxes for hats that force the air to go down before it can go out.
The reason the ventilator above is so much better is NOT my brilliance, it is because of the engineers at CSR Edmonds in North Ryde, Australia. THEY are the ones who thought up this brilliant vertical blade turbine rain hat. You can see below their original design.
THE PICTURE ABOVE SHOWS THE REASON FOR THE HIGHER PERFORMANCE
You can see that the turbine blades in the Aussie rain hat allow all the air to move up and out with NO restriction. This is the heart of Invisco’s high performance!
The picture to the right is the LorenCook invention, a curved top edge of the throat to make it easier for air to flow over and down. But why do they have that wall bent in so it is smaller at the top??
You have several models from which to choose based on size and air flow. This list is in process so check back for more details soon. (10-17-23)
- 12 inch throat
- 14 in
- 20 in
- 24 in
- 30 in
- 36 in TP900 (900 mm)
- 42 in
- 48 in 38,000 CFM
Here is one – the 36 inch TP900 – the entire specification is here – https://invisco.com/inventions/invisco-industrial-hybrid-rooftops/industrial-hybrid-rooftop-specs/
2023 Update on Invisco’s industrial rooftop design in Los Angeles
The Invisco Tornado is the world’s first high performance hybrid. James Shwe of Maroko & Shwe in Burbank California used my Tornado on a new gymnasium for Studio City in Los Angeles County. He put Edmonds on the design first, then added Invisco in 2016. Then the engineers in Los Angeles saw that the Tornado’s performance is so much better they deleted Edmonds from the design. You can see the case study here – http://invisco.com/invisco-industrial-hybrid-rooftops/case-study-studio-city-gymnasium/
FIRE SMOKE ROOFTOP IS DESIGNED BETTER
The Invisco design is direct drive – no belts to melt. So there is no limit to time at 1000 degrees F.