Heat Loss Calculator [RE-wrenches]

[Jeremy Rodriguez]

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Thank you guys, for your advise!

Jeremy

Bill Loesch wrote:
> 
> 
> Jeremy et al,
> 
> The Air Conditioning Contractors Assn. (ACCA) Manual J is a formidable
> document (now in Edition 8 that would choke a hippo) that even the HVAC
> industry doesn't adopt wholeheartedly. Possibly because of a lack of 
> sales,
> ACCA has wisely introduced a Manual J - AE (Abridged Edition) which is 
> much
> much simplified.
> 
> One benefit to either of the manual J programs is once you have entered 
> the
> standard building constructions (on your first useage) the subsequent
> useages are almost automated.
> 
> Since ACCA still wants to _sell_ this abreviated program, perhaps Dan's
> recommendation for free software is the way to go.
> 
> Bill Loesch
> Solar 1 - Saint Louis Solar
> 314 631 1094
> 
> 
> Message text written by INTERNET:RE-wrenches at topica.com
> >
> Hi;
> 
> I've got a copy of Manual J. Its overkill for most residential, but its 
> good. The problem is estimating your air infiltration losses without a 
> blower door test. Its almost not worth using Manual J without a good 
> infiltration number. Sort of like using a KWH meter to check all your 
> phantom loads and then winging a guess on the refrigerator.
> Of course there is engineering software beyond Manual J too, but once 
> again without actual measurements of the actual construction used, its 
> not going to be very accurate. (ie what if the guys that were supposed 
> to put in the vapor barrier didn't seal around the windows and doors, or 
> 
> the cable guy came back and hacked holes in it?) All those estimated R 
> values used in all of the estimators are only that: estimated, so I'd go 
> 
> with what Dan recommended.
> 
> Ray
> 
>  Jeremy Rodriguez wrote:
> 
> >Wrenches, 
> >Anyone have experience with Manual J or other heat loss calculators?  
> >Slant Fin, Wirsbo ??
> >
> >Thanks Again!
> >
> >Jeremy
> >  
> >
> <
> 


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