Ventilation

Ventilation in applied fluid mechanics

1. Sub:Applid Fluid Mechanics Topic:Ventilation . PATEL YASH..(131100106042 ) RADADIYA PRASHANT.(131100106043) RAITHATHA MADHAV.(131100106044) RAKHOLIYA ARUN.(131100106045) SAVALIYA HARSH.(131100106049) BRANCH: GUIDED BY: CIVIL ENGG. PROF.NILESH RATHOD.

2. Introduction to Ventilation. Types Of Ventilation. Methods Of Ventilation. Air Conditioning. OUTLINE

3. Ventilation The process of "changing” or replacing air in any space to provide high quality indoor air To: Remove unpleasant smells and moisture Introduce outside air Improve circulation, etc. In firefighting, refers to a tactic of creating a draft to control the release of heat and smoke

4. Reasons for Ventilation To remove or control: Hazardous/obnoxious odors Smoke and smoke odor Odors Asbestos Chemicals Gases Fumes Particulates Burned Popcorn-Ugh!

5. Types of Ventilation Vertical Moving air up and out Horizontal (lateral) Moving air out through windows and doors

6. Ventilation system of a house

7. Methods Of Ventilation

8. Natural Ventilation Natural movement of air entering and leaving openings such as windows, doors, roof ventilators as well as through cracks and crevices of a building Heated air rises, cool air below

9. Mechanical Ventilation Mechanical/Forced Fans Cooling Dilution Exhaust Circulation Filtration Scrubbers Exhaust Systems Chemical

10. How Air Moves Natural + No cost Difficulty controlling Increased time to utilize Mechanical/Forced + Easy to control direction Need power source Fumes Cost

11. Air Conditioning systems Air conditioners U se work to transfer heat from cold to hot.

12. Air Conditioning

13. Air conditioners An air conditioner M oves heat from cold room air to hot outside air M oves heat against its natural flow M ust convert ordered energy into disordered energy S o as not to decrease the world’s total entropy! U ses a “working fluid” (chlorofluorocarbons – freon -, hydrofluorocarbons )to transfer heat This fluid absorbs heat from cool room air This fluid releases heat to warm outside air

14. Total Air Conditioning

15. Central Air conditioning Circulate cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls, floors, or ceilings covered by grills) carry cooled air from the air conditioner to the home. This cooled air becomes warmer as it circulates through the home; then it flows back to the central air conditioner through return ducts and registers

16. www.google.com www.wikipedia.in Applied fluid mechanics by R.P Rethaliya . References:

17. THANK YOU