Warehouse bathroom cooling
Warehouse bathroom cooling
(OP)
I have a situation where I have to provide cooling to a bathroom group that is located within a non-cooled warehouse. The heat load on the room will be satisfied with a residential grade packaged wall AC unit. Now, by code I have to provide 200-300 cfm of exhaust. My question is what is the best way to handle this situation?
Are any of these solutions valid? Are they feasible?
1. Run the fan constantly and size the unit for the heat load in the space plus the ventilation infiltration load introduced by the fan? Won't I overcool the space during the shoulder months? Where will the extra air come from? Do I need to provide an intake grille somewhere?
2. Run the exhaust fan only when the bathroom is being used and size the wall unit for only the heat load in the space and not the ventilation infiltration load?
Any help would be appreciated.
Thanks
Are any of these solutions valid? Are they feasible?
1. Run the fan constantly and size the unit for the heat load in the space plus the ventilation infiltration load introduced by the fan? Won't I overcool the space during the shoulder months? Where will the extra air come from? Do I need to provide an intake grille somewhere?
2. Run the exhaust fan only when the bathroom is being used and size the wall unit for only the heat load in the space and not the ventilation infiltration load?
Any help would be appreciated.
Thanks





RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
My only concern now is the negative pressure in the space created during exhaust fan operation. Does anyone think this will be a problem and cause the door to stay slightly cracked open?
Thanks again.
RE: Warehouse bathroom cooling
the example given by jterrell, that applies to restroom area cannot be applied to bathroom in my opinion.
first of all, how do you find target design temperature for bathroom? you cannot apply anything that applies to general rooms, as wet body has very different comfort feeling.
second, it is almost impossible to have such strict control of air supply temperature, especially at part-loads, which will avoid not only discomfort, but even serious health problems. you simply cannot release 16 degree Celsius air in area where someone is bathing. you should specify minimum supply temperature to be about 24-25 degrees Celsius or even more, which could be really senseless, as you cannot recirculate air, you would have enormously large supply air volume needs, and even if that would be demand of very rich client, you would not be able to properly distribute such large quantities of air in small space.
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
No mention of heating requirements? Will radiant electric units be provided?
RE: Warehouse bathroom cooling
engineer's code of practice is very important part of engineer's performance, and if we do not stick to it, we will waste lot of time for nothing.
in this instance, if something is stated as bathing area, it must contain either shower or bathtub, otherwise it is simply not bathing area and than it can be some completely different story.
RE: Warehouse bathroom cooling
I agree with you, but I have one point regarding to health issue you mentioned.
in a regular house equipped with heating/cooling system, bathrrom has an air outlet provide both heating and cooling, what about this point
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
As previously mentioned the bathroom will be negatively pressurized, which indicates that the makeup air will be unconditioned air. I ask if moisture is a concern, because when the unconditioned air enters the space and hits surfaces that have been cooled by the air conditioning unit, then condensation may occur. If condensation occurs, then mold may also become an issue.
Justin K, P.E.
http://www.engproguides.com
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling
RE: Warehouse bathroom cooling