oven load for a/c

yellowdog · June 26

I have a small bakery that is starting up and wants to put a/c in the space they are renting. The only oven that they are going to have is pretty much just a Samsung electric residential double stacked 30" wall oven (trying to get a model number now). The ovens will run almost all the time that they are in the bakery. I am struggling to find out how much load I should add to my heat gain for the ovens. Does anyone have any practical experience with this, or a rule of thumb? Is it kw x 3412 and add the total load to the heat gain? Any help is appreciated.

Jamie Hall · June 26

That would be pretty much what I would do…

But I would also have an exhaust hood and fan for it.

pecmsg · June 26

bakeries, equal flour and yeast.

That creates nightmares in AC equipment. All kinds of bacterial growth.

I highly advise a four or 5 inch media filter on the return duct

avoid mini splits

EBEBRATT-Ed · June 26

Watts X 3.42 will give you BTU. Kilowatt is 1000 watts. so a 10kw oven would be 10,000 x 3.42=34,200 btu/hr or 3 tons of cooling if it ran at that load for 1 hour.

Now if you are exhausting air you getting rid of some of that heat load but whatever your exhausting is made up of (probably) outside air MU that contains heat.

So lets say you exhaust 100cfm that is 6000 cf of air/hour.

If the outside air is 95 and you want the kitchen at 80 thats a 15 degree TD so

15 x 100x 1.08= 1,620btu/hour

You also have to figure in the moisture content of the OA coming in and add that in

and you have to figure how much heat from the oven adds to the load . Some heat is load some is exhausted.

Kitchens are complicated as you can see.

I would recommend picking up the ASHRAE "pocket Guide for HVACR"

oven load for a/c

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