[Bldg-sim] supply air rate

[Varkie C Thomas]

Carol,
You are right.  The question was what is the range for supply air in CFM/sqft.  SA standards for medical and industrial facilities are in ACH.  The minimum value for OA & SA are set by standards but the maximum SA value cannot be anything that CFM = BTUH (cooling) / (1.08 * (Ti - Ts)) produces.  The type of space determines the maximum and there is a limit to the SA and after which other cheaper methods (supplying air is expensive) are used for heating and cooling and judgement is also involved.  It helps to understand the whole subject.  Refer to OSHA for the answer to the question.  http://www.osha.gov/
Varkie
----- Original Message -----
From: Carol Gardner <cmg750 at gmail.com>
Date: Thursday, March 3, 2011 12:42 pm
Subject: Re: [Bldg-sim] supply air rate
> Funny how this has expanded from the original question: "what is 
> the range 
> for supply air cfm/sqft for conditioned spaces". I took it to be 
> him asking 
> for OA+RA quantities that get delivered to a space, since I was 
> just talking 
> about that with a colleague recently. Perhaps Sambhav can let us 
> know if we 
> met his needs. 
> 
> Thank you once again, Varkie, for sending us another of you 
> papers. I 
> appreciate all information I get from you and I actually read it!! 
> Goodstuff. 
> 
> Cheers, 
> 
> Carol 
> 
> 
> On Thu, Mar 3, 2011 at 9:14 AM, Varkie C Thomas <thomasv at iit.edu> 
> wrote: 
> > Sambhav, 
> > http://bepan.info/class-notes/e1-bldg-shell-environ 
> > Click on F15 - Air-Quantities 
> > I have also attached the section 
> > Varkie 
> > 
> > ----- Original Message ----- 
> > From: sambhav tiwari <tiwari.sambhav at gmail.com> 
> > Date: Thursday, March 3, 2011 6:18 am 
> > Subject: [Bldg-sim] supply air rate 
> > 
> > > Hi All, 
> > >           What is the range for supply air cfm/sqft  for 
> > > conditioned spaces 
> > > Thanks 
> > > Sambhav. 
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> 
> 
> -- 
> Carol Gardner PE 
> 
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