Design Basis for Industrial Air Change Rate
Design Basis for Industrial Air Change Rate
(OP)
Excluding ventilation required for heat load removal and/or contaminant levels various HVAC catalogs (ie Loren Cook, Greenheck,etc) list recommended air change rates for various commercial and industrial facilities.
Of particular interest is the industrial facilities.
What is the design basis to derive the recommended air change rates??
My outdated copy of the "Industrial Ventilation - A Manual of Recommended Practice" does not list suggested air change rates.
The "Steel Mill Ventilation" book (published 1965)appears to be the predecessor to the "Industrial Ventilation" book and does not list recommended air change rates.
Of particular interest is the industrial facilities.
What is the design basis to derive the recommended air change rates??
My outdated copy of the "Industrial Ventilation - A Manual of Recommended Practice" does not list suggested air change rates.
The "Steel Mill Ventilation" book (published 1965)appears to be the predecessor to the "Industrial Ventilation" book and does not list recommended air change rates.





RE: Design Basis for Industrial Air Change Rate
http:
RE: Design Basis for Industrial Air Change Rate
Thanks for looking
As I had stated previously, the chart that you referenced is commonly available. I would like to know how that number was derived.
I have a client whom insists on air change rate significantly lowered than that published on the recommended frequency charts.
Does anyone know if this topic is covered by the IBC??
RE: Design Basis for Industrial Air Change Rate
RE: Design Basis for Industrial Air Change Rate
RE: Design Basis for Industrial Air Change Rate
Interesting tidbit of info
ASHRAE probably wishes that you had thrown that ole book away
RE: Design Basis for Industrial Air Change Rate
I'd go around it this way:
The IMC 2006 allows for an engineered ventilation system, which means that you can provide the high rate for the code reviewer and still satisfy your client by installing combination CO/NO2 sensors or other IAQ sensors for other gases to override the Ventilation system to swicth to the high rate, set the rate as low as possible (even below your client's requirements) any time the IAQ sensor detects limits below OSHA acceptable Threshold Limit values.
RE: Design Basis for Industrial Air Change Rate
I went to a baggage handling facility where internal temperatures were fine with about 4ACH ventilation on a 32oC day and and the prime concern there was creating air movement by installing numerous fans around the place.