| Third Party PPV Fan Testing
Two VENTRY® fans and two fans from our leading competitor were tested by the Austin Fire Department, University of Texas at Austin and The Swedish Rescue Services Agency.
In the “Travis House Study” the researchers measured the flow rates of the four fans at different distances from the door, knowing that “more flow rate is always better than less” for effective PPV (p. 5). While the goal of the study was to investigate PPV in large structures---not to compare fans---the results are very favorable to the VENTRY brand. |
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| Here are two points from the research that we'd like to highlight. In an apples-to-apples comparison---the two fans both with 6.5 hp Honda® GX200 engines and 24-inch propellers---the VENTRY fan pushed greater airflows at all distances tested, up to 4 times that of the competitor. Even more compelling is how well our small fan also out-performed the competition. At six feet from the door, our 4 horse 20-inch VENTRY Fan pushed essentially the same air flow as the 6.5 hp 24-inch competitor. At 12 feet, the small VENTRY pushed 2.8 times the air flow of the larger competitor. |
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Simplified section of Figure 3 (showing exhaust flow at different distances from the door) from the paper “Investigating Positive Pressure Ventilation.” Click the image to see the complete graph. |
Given the better performance despite smaller size and horsepower, the researchers suggest that “factors other than the motor rating of the fans should be considered as being important when a fire department selects fans for use in PPV” (page 5). Progressive departments that recognize and use PPV as a life-saving tactic should also choose the best fan for the job.
Since the tests, Austin Fire Department has purchased many VENTRY Fans.
Please see the complete paper online for all the details and data:
Source: “Investigating Positive Pressure Ventilation.” Authors: Ofodike Ezekoye of the University of Texas, Austin; Dr. Stefan Svensson of the Swedish Rescue Services Agency; and Robert Nicks of the Austin Fire Department. Retrieved March 3, 2008 from http://www.me.utexas.edu/~ezekoye/rsch.dir/documents/
TravisHouseStudy.pdf
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