Venturi Roof Ventilators

Wind tunnel and cfd evaluation of different design configurations t.

Venturi roof ventilators. Box 513 5600 mb eindhoven the netherlands b division of building physics department of civil engineering katholieke. The aura gravity ventilator also ventilates the roof through other means. The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. As the hot air rises it accelerates to the outside.

A venturi shaped roof for wind induced natural ventilation of buildings. Brett huizenga owner hometown roofing omaha ne. It s relatively quiet and uses very little power. This is done by a phenomenon called the venturi effect.

Get a feel for the venturi effect. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. Big organizations like the forest products laboratory and even the american society of heating refrigerating air conditioning engineers realized that poor roof ventilation systems could cause condensation problems in a. Although more vent is generally better replacing a turbine vent with a standard flat vent is acceptable as long the vent is big enough for the square footage of the attic space.

Check out this engineer s testimonial after purchasing two aura vents for his house in southeast tennessee. Our passive aura vents are designed to draw out hot air by creating a vacuum. The stack effect this is when hot air rises out of the roof through the roof vents. Fan tastic vent rv roof vent with thermostat manual and automatic speed 12 volt rv vent fan smoke dome rv vent cover model 2250 white 4 3 out of 5 stars 117 249 99 249.

Another premium van roof vent option maxxfan delivers the 5100k. Gravity roof ventilation turbo charged. The building codes and building science for. Our aura roof vents do not move but provide active suction through a patented inner and outer louver design that makes use of the venturi effect.

Roof ventilation is not a new process by any means. We fixed the issues by cutting in the additional undereave vents adding attic insulation baffles in most of the rafter bays and installing venturi vent plus ridge vent. The homeowner has a beautiful new roof that ventilates properly for the first time ever. Bronsemad abuilding physics and systems eindhoven university of technology p o.

The early to mid 20th century saw the development of this concept.