123ArticleOnline Logo
Welcome to 123ArticleOnline.com!
ALL >> Education >> View Article

Positive Pressure Ventilation Fans

Profile Picture
By Author: Oleg Tchetchel
Total Articles: 30
Comment this article
Facebook ShareTwitter ShareGoogle+ ShareTwitter Share

Buffalo Fan 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 115/230V single phase electric motor.

The Positive Pressure Blower is a high volume fan use to pressurize a burning structure, in case of fire, in order to force the smoke out. Positive Pressure Blowers are portable, gasoline powered fans, 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, 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, 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 3/4 to 1/2 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, 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, etc.

The standard features of Buffalo Fan Co. Positive Pressure Ventilators include: fold down "T" handle; 8" pneumatic tires with full width axle; a "tilt and lock" device that allows the unit to be angled 20 degrees up or down with infinite positions in between; sturdy and light 1 inch wrap around frame. Explosion proof electric motors are available as drivers too.

The optimum ventilator placement distance on most 6'6" doors is about five to six feet away. If placement is too close, the seal won't be achieved. If placement is too far away, the cone of air will be hitting well outside the opening.

Additional information can be found at the Buffalo Fan Co. company web site http://www.buffalofan.com/index.html.

Oleg Tchetchel
Air Systems Engineer
Buffalo Fan Co.
http://buffalofan.com/news.html
http://buffalofan.com/custserv.html

Total Views: 146Word Count: 564See All articles From Author

Add Comment

Education Articles

1. Assignment Help In The Uk: Expert Support For Academic Success
Author: Nick Dell

2. The Best Oracle Cloud Infrastructure Training And Certification
Author: SIVA

3. Data Science Course Exploring Generative Ai In Data Science? Transformative Applications And Techniques
Author: Eshwar

4. Amazon Quicksight Training | Aws Quicksight Training In Hyderabad
Author: himaram

5. Microsoft Fabric Training | Expert Led Microsoft Fabric Course
Author: Renuka

6. Data Science And Artificial Intelligence: Collaborators In Technological Innovation
Author: Gajendra

7. Kubernetes Certification Training Course | Docker Online Training
Author: krishna

8. Curriculum At Diyafah International School
Author: diyafah

9. Affordable World-class Medical Education For Aspiring Doctors
Author: Mbbs Blog

10. Explore The World With Your International Driving Licence
Author: Motolic

11. Building Credibility In Ai: How Generative Ai Certifications Enhance Professional Trust
Author: Dorothy Benson

12. Assignment Help In The Uk: Your Path To Academic Success
Author: Nick Dell

13. Germany's 90,000 Work Visa Initiative A New Chapter For Indian Talent
Author: Videsh

14. The Best Google Data Engineer Certification Online Training In Hyderabad
Author: SIVA

15. Scrum Master Training - Scrum Master Online Training
Author: himaram

Login To Account
Login Email:
Password:
Forgot Password?
New User?
Sign Up Newsletter
Email Address: