Ventilation requirements

[TexMex]

I am looking at building a Sound Proof studio, (internal dimentions about 14ft square by 8ft 6in high). Being sound proof means that it will be practically air tight and therefore I need to provide ventilation (by means of vents, extractor fans etc..). Does anybody know of a formula to give me the required throughput that should be provided (cu ft /hr). Bearing in mind this will probably be used by four musicians with associated amplifiers and other heat producing electrical equipment. Obviously the standard type things that you get for bathrooms would be totally inadequate (unless I used quite a few of them.) I would like to err on the over generous side as to add more ventilation later would be very difficult and expensive.

 

[masona]

Is this any good ?
Loads of information and also air change calulation in room/person/per hour.

 

[TexMex]

Absolutely ideal. I'm surprised how little is required. Allowing for five people, allowed to smoke, I need about 4 Air changes per hour. which comes out about 50 Ltrs per sec.

I'll probably install 1 fan with at least this output wired constantly to the lighting circuit, and add another of about 5 times this capacity, to be switched by the customer.

They may need a bit of air conditioning in due course (to keep things cool) but that will push the project over budget at this stage.

Thanks for the pointer.