#1 San Antonio Spurs Hats von gsnoopy520 24.03.2018 09:44

B Blower Co. makes low Profile Positive Pressure Ventilators that have been designed to fit in tight compartments ans small spaces without scarificing performance or features. These compact ventilation blowers are available is both gasoline driven conviguration and with 115230V single phase electric motor.

The Positive Pressure Blower is a high volume fan use to pressurize a burning structure http://www.redsoxbaseballproshop.com/red-sox-tyler-thornburg-jersey/ , in case of fire, in order to force the smoke out. Positive Pressure Blowers are portable, gasoline powered fans http://www.redsoxbaseballproshop.com/red-sox-ted-williams-jersey/ , most of which utilize a 5.5 horsepower engine. The theory of positive pressure ventilation is based on the principal of even pressure distribution. Once a structure is pressurized, air and smoke can be forced out through any opening (similar to escaping from an inflated baloon).

Electric smoke ejectors (negative pressure ventilation) can be used for smoke removal but this has proven to be inferior to positive pressure ventilation.

What makes Positive Pressure Ventilation superior to negative pressure ?

* The risk of injury from the engaged structure is reduced while placing the fan in operation.
* Positive pressure ventilation is faster to set up and requires fewer personnel.
* The Positive Pressure Blower has a self contained power source, while electric fans require cords and adaptors.
* Smoke and heat is removed from all levels of the structure unlike negative pressure which can result in localized extraction.
* Quicker results. After initial knockdown http://www.redsoxbaseballproshop.com/red-sox-steven-wright-jersey/ , positive pressure ventilation can be initiated and will show immediate improvements in the interior conditions.
* It allows replacement of contaminants with vital cooler, cleaner air - especially in sealed or windowless buildings. It's also very effective in large and compartmentalized buildings, warehouses http://www.redsoxbaseballproshop.com/red-sox-rusney-castillo-jersey/ , schools, etc.
* Quick results allow firefighters faster entry due to lower heat levels and improved visibility.

The following criteria should be considered for effective use of Positive Ventilation:

- The cone of air must cover the intake opening. The fan must be placed the correct distance from the structure such as that the cone of air forms a seal around the opening.
- The size and location of the discharge is important. The discharge, if at all possible should be as high and far away from the intake as is practical. The discharge size should be between 34 to 12 times the intake. This may not always be possible as the fire may have already dictated discharge locations and sizes; but whenever there is a choice http://www.redsoxbaseballproshop.com/red-sox-roger-clemens-jersey/ , the above criteria should be used.
- It is important to control the ait flow between the intake and discharge. Positive pressure ventilation can move air long distances if proper control is maintained by opening and closing doors, windows, etc. It is important that firefighters understand not to open the structure too much: ie breaking windows http://www.redsoxbaseballproshop.com/red-sox-rick-porcello-jersey/ , etc.

Xobor Forum Software ©Xobor.de | Forum erstellen
Datenschutz