123ArticleOnline Logo
Welcome to 123ArticleOnline.com!
ALL >> Home-and-Garden >> View Article

Make-up Fan Ventilators

Profile Picture
By Author: Oleg Tchetchel
Total Articles: 42
Comment this article
Facebook ShareTwitter ShareGoogle+ ShareTwitter Share

In the environments where the inside air quality is acceptable, often a portion of the inside air may be drawn back through the make-up air unit where it is recirculated back into the building. Advantages of using Hartzell Recirculating Make-Up Air units are lowered heating costs, better indoor air mixing (reduced air stratification), as well as constant building pressurization.

Air make-up system might consist of a wall-mounted Hartzell propeller fan coupled with an automatic shutter or an inlet weatherhood and a control system to activate the fan motor. For rooftop installations, a powered Tenderall hooded roof ventilator, which may contain a motorized shutter, can be used successfully. These systems would provide make-up air mainly for ventilation purposes.

Practically all air removed from a building is replaced by outside air at the same rate. Outside air will enter by any means available, when the inside air pressure is less than outside air pressure. This happens when exhaust exceeds supply systems capacity to replenish the building envelope with air. Possible consequences of this negative pressure differential ...
... are degraded exhaust system performance, loss of environmental control, adverse safety and performance effects on appliances which combust fuel and processes which vent gaseous products via natural draft, increased building structural loads, and excessive forces on exterior doors. Unfortunately, these problems occur where an inadequate amount of replacement or make-up air has been provided. A good make-up air system will alleviate all of these ills by providing the correct amount of replacement air. It may also reduce plant overhead by lowering heating, cooling, and ventilating costs.

In many areas, air must be conditioned before entering a facility. This necessitates that the make-up air system have heating and often air cooling and filtering abilities. A so called make-up air unit is required. Typically a make-up air system includes an air mover section, usually a propeller or centrifugal type fan, an air tempering section containing heating and where necessary cooling and filtering equipment, and a control system.

Fan selection and power requirements are generally determined by the application. When only general ventilation is required (fan pressure requirements are low), a propeller type fan can be utilized. To supply make up air through a duct system with a resistance of 0.5 in w.g. or more, a centrifugal fan should be considered. In either system, diffusers may be used to direct the discharge air velocity.

In summary, an adequate amount of makeup air is required for personnel, machines, and processes to operate properly, efficiently, and safely. Failure to provide adequate make-up air is often the cause of unnecessary expenditures for additional exhaust systems and heating or cooling equipment. These devices in turn compound the problem of air starvation within the building. Reliable, cost effective equipment is available from Canada Blower to supply the make-up air necessary to balance air removed from a structure.

Additional information can be found at the Tenderall Fan web site http://www.tenderall.com

Oleg Tchetchel
Industrial Equipment Designer
nisco@globalserve.net
Tenderall Fan Co.
http://www.tenderall.com/blower/index.html
http://www.tenderall.com/ventilator/index.html

Total Views: 362Word Count: 485See All articles From Author

Add Comment

Home and Garden Articles

1. Avoid These 6 Common Mistakes When Choosing Fasteners
Author: Jo Cuneen

2. Understanding Purging Material: Why They Matter In Manufacturing
Author: UNICLEANPLUS

3. Home Improvement Projects To Do This Summer
Author: Structura Remodeling

4. Top Advantages Of Machine Sprayer For Agriculture: Power, Portability, And Precision
Author: Neptune farming

5. 6 Eco-friendly Carpet Cleaning Solutions
Author: Hazel Jones

6. Débouchage Wc Bruxelles
Author: Plombier bruxelles

7. Maximising Efficiency With Modern Plumbing Techniques
Author: jasonvanof

8. The Growing Demand For Indian Housemaids In Singapore
Author: Eazymaid Pte Ltd

9. Why The Mini Weeder Machine Is A Game-changer For Small Farmers
Author: Agriwow

10. 5 Things To Consider When Choosing A Gutter Guard Installer
Author: Gutter Empire Vancouver

11. Stainless Steel Fabrication, Shelving Storage, And Shower Trays: Elevate Your Auckland Room
Author: Kiwi Stainless

12. How To Clean Gutters From The Ground? What You Need To Know First?
Author: Gutter Empire LLC

13. How Pest Management Solutions By Ultima Search Can Improve Your Quality Of Life
Author: Ultima Search

14. Buy Garden Tools: Leading The Way In High-quality Products
Author: Agriwow

15. How A Cold Fogging Machine Can Help Combat Mosquitoes And Pests Effectively
Author: Neptune farming

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