Outdoor air in smoking room

[Vicsidhu]

ASHRAE requires 60 cfm of outdoor air per person in a smoking room. How do I get the cheapest and effective solution. My HVAC unit will be set at minimum 20% outdoor air and the room is 250 sq. ft with 10 smokers.

Thanks

 

[stevenw]

Cheapest answer - "no smokiking" sign.

Real world -
10 people x 60 CFM/person = 600 CFM
600 CFM exhaust fan to remove smoke from the room and exhaust it to the outside.
Interlock the fan with the ahu so they run at the same time.

 

[ChasBean1]

Depending on your system, you may not need worry about providing 3,000 cfm to get your 600 cfm of ventilating air, if that's what you're concerned about. As long as you don't recirculate any of the room air, even if the supply contains only 20% OA, 600 cfm total air in is still providing ventilation if it is single pass and the room is equipped with a 600 cfm exhaust fan.

 

[paulkeating]

Smoking is prohibitted in the workplace here .... so you cannot design a system supposedly for smokers or else the cancer council people will take you to court and sue you so badly that you'll never work again ....

 

[friartuck]

UK Health and Safety Regs actually prohibit the recirculation of smoke so a full fresh air system should be used. Planning and building applications requires 16litres/sec of fresh air per person and quite often this is based on one person per sq. metre (in pubs).

The net result is very high air change rates (typically 12-15ac/hr)

There are smoke filters which have activated carbon and electrostatic filters made by Honeywell, Trion etc.

Smoking in officers is however banned....separate smoking areas are provided.

Drapes