Cigar Smoke Removal
I regularly have customers ask me about how effective a smoke eater can be for removing cigar smoke in their cigar bars, country clubs, lounges or retail outlets where they allow cigar smoking. Many question if a smoke eater unit can be effective enough to remove the smoke and odors to an acceptable level. Some have even commented that they have witnessed systems that do not perform up to par.
An important thing to remember, when you are selecting a smoke removal system for cigar smoke, is that cigar smoke is much more concentrated than cigarette smoke. Cigar smoke contains more particles and more chemical fumes and VOCs (Volitile Organic Compounds) than cigarette smoke.
There are two main things to consider when dealing with cigar smoke:
1. Choosing the Right Smoke Removal Technology
While electrostatic air cleaners work very well for cigarette smoke, most electrostatic units lack enough gas phase media to effectively remove the fumes and odors from cigar smoke. I always recomend a media based air cleaning system or at least a system with several pounds of granulated activated carbon and potassium permanganate.
The Everclear Deluxe HEPA Air Cleaner for example, has 44 pounds of gas phase media blend that is specially formulated to deal with heavy tobaco smoke. Some electrostatic units, such as the SE50 and Smokeeter LS systems do boast a decent ammount of granulated activated carbon, which can help reduce odors and exposure to toxic chemical fumes. Make sure to check and see that there are several pounds before selecting a model.
Many smoke eaters will advertise that they have carbon, some are merely a few grams of carbon embedded into a foam pad, this will not be enough to get the job done!
2. Properly Sizing the Smoke Removal System
Airflow is very important; the best unit in the world will not be effective if it is not delivering enough airflow. I would suggest a little overkill when dealing with cigar or pipe smoke. We use a formula to determine how many CFM (cubic feet per minute) are needed based on the volume of air in a particular establishment.
To do this, first figure out the total volume of air:
length X width X height = cubic feet of air
Next, divide the total cubic feet by 60 (as in 60 minutes in an hour)
The answer is how many CFM are require to do one complete air exchange.
For cigar smoke we like to achieve between 14 and 20 air exchanges per hour, depending on how many smokers and the desired results.
Multiply the number of desired air exchanges per hour, this will be the number of CFM you will need from your smoke eaters.
Below I give an example using a 25′ X 25′ room with 10′ ceilings. I want to achieve 16 air exchanges per hour to deal with my average of 4-5 smokers at a time:
25X25X10= 6,250 cubic feet
6250/60 = 104.167 cfm for one air exchange
104.167 X 16 = 1666.667 CFM
So I will need about 1667 CFM to deal with my smoke problem.
Another thing to consider is that I will want to run the smoke eaters on the medium speed, so that the noise level does not bother my customers. All air cleaners have a CFM rating that is based on the highest and loudest fan speed setting.
For this job, I have chosen the Everclear Deluxe, which has a CFM rating of 1150 on high speed and about 825 on medium. Since I will want to run these on medium, I will need two units, which will deliver about 1650 CFM, which is close enough to my estimated 1666 to get the job done. This also leaves me the ability to turn the units up to high speed, if I am busier than I expect, and still be able to handle the load.
Other things to consider are installation options, electrical requirements and control options.
I hope that today’s post helps people understand what is involved in properly sizing a system, if you have any questions, feel free to give me a call and I’ll be glad to help you determine your airflow requirements.
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