HVAC for Bakery 1

[Drazen]

Anyone has experience with bakeries?

My concern is related to the fact that room with ovens has no separation from several other process rooms.

Ovens have cinematic gas burners, and there will probably be no chance for ventilation to not disturb adequate combustion air supply, though heat rejection would be my preferable way of dealing with heat emissions if I had chance with it.

Bakery rooms resemble boiler rooms to me, and I still don't have final concept on how to achieve at least minimum comfort for full-shift employees.

 

[MintJulep]

Generally exhaust hoods over the ovens and that's it.

 

[berkshire]

Don't forget the makeup air for the hoods.
B.E.

 

[cdxx139]

Sounds like a restaurant.

Supply the customer area,
transfer into kitchen,
exhaust up hood.
Add minimal supply to kitchen if you want to keep bakers somewhat comfortable, but I wouldnt (waste of energy). Cant handle the heat...

knowledge is power

 

[AnotherEllis]

Hoods with supply plenums for makeup, and be careful about blowing cold air on hood.

Worker comfort in the service industry is not the same as in say retail. You work in a bakery/kitchen setting... it will be hot.

My local Captive Air rep is a wealth of knowledge and a great resource.

http://www.ellisconsultingengineers.com

 

[mauricestoker]

If the employees complain,they can be replaced by non-union Keebler elves.

 

[AnotherEllis]

Yep. And I hear baking with magic can earn you LEED Points.

http://www.ellisconsultingengineers.com

 

[Drazen]

Thanks for replies. Maybe I was not specific enough about these ovens. Cinetic burners are equipped with make-up air fans, ovens are completely closed and all baking exhaust is captured with local fans for each unit, while each unit also has its flue.

All issue is with make-up air from room, as total capacity is about 700 kW.

If I use norms for boiler room (which specifically state to not cover such cases), I will have to have grilles all over opposing walls, and I am concerned about employee comfort.

 

[chicopee]

I think that I understand what you are asking because you sure have a way to go about it. I would investigate the installation of fresh air ducts whereby their inlets would be close to the ovens for combustion purposes.

 

[TrippL]

Sounds like you are trying to say that you have industrial sized ovens with self contained intake combustion and exhaust flue. Therefore you are not having to provide any additional combustion air only conditioned air to provide comfort for the employees.

If this is the case then you need to determine the heat gain from the ovens and go from there.

 

[MechEngNCPE]

Provide hoods with makeup air plenums, dedicate an ahu to each hood if the hood is large enough, or you can provide makeup air and use the cfm/linear foot for the type of hoods. Look in your mechanical code.

 

[Drazen]

Thanks, fresh air ducts to be brought in vicinity of fans seems to be the only feasible solution for now.


Industrial workplace naturally have different specs for comfort, but that mostly affect applied calculations, as some level of comfort is necessary; it is draft what concerns me, but that will likely be solved by increased effective surface of exhaust grilles.