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Re: [EnergyPlus_Support] Frame Effects
Dear Fred,
Thanks for the info...I spent some time going through the source code as was
unable to find that value. What file is it in? Just curious.
Thanks again for your help.
Peter
> <html><body>
>
>
> <tt>
> Peter,<BR>
> <BR>
> EnergyPlus uses 2.5 inches = 63.55 mm for the frame edge width, which is <BR>
> pretty close to<BR>
> 65 mm. This value is hardwired in the program and is not a user input.<BR>
> <BR>
> Fred Buhl<BR>
> <BR>
> Peter G. Loutzenhiser wrote:<BR>
> <BR>
> >Dear All,<BR>
> ><BR>
> >I am looking over the calculation procedure for the glazing heat balance <BR>
> >equation and in the Engineering Manual it shows the calcutions. One value
that <BR>
> >I am very interesting in is the "Ratio of Frame-Edge Glass Conductance"
which <BR>
> >is an input into EnergyPlus used to quantify the edge effects. According to
<BR>
> >the Engineering Manual, this values is used in conjunction with an edge
area. <BR>
> >To calculate this value required a frame edge distance. Ashrae fundamental
<BR>
> >suggests a common value for this glazing is 65 mm from the frame. <BR>
> >Unfortunately I have not been able to find what the standard value
EnergyPlus <BR>
> >uses to calculate this ratio, because apparently it is not an input to the
<BR>
> >code. Is this the value the EnergyPlus uses? If not, what value or how
does <BR>
> >it calculated or if I have missed somewhere in the EnergyPlus literature,
what <BR>
> >is the value?<BR>
> ><BR>
> >Many thanks,<BR>
> >Peter<BR>
> > <BR>
> ><BR>
> ><BR>
> ><BR>
> ><BR>
> ><BR>
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