[EnergyPlus_Support] Re: Simple Sizing Parameter Question

["JV Dirkes II" <jvd2pe@xxxxxxx>]

Dear All,

I've been thinking about this, in large part because LEED
certifications allow different sizing factors for heating and cooling.

It seems that you could do the following to get separate heating and
cooling sizing factors from E+:

1) Develop a working model using Sizing Parameters or Zone Sizing
factor of 1.0
2) Review the component sizing information for each zone and determine
whether the heating or cooling load dominates that particular zone.
3) Apply individual zone sizing factors in the Zone Sizing objects
that meet your goals.

In the case of a LEED project, you might find a zone that's
heating-dominated and use 1.25 as the zone sizing factor.  For
cooling-dominated zones, use 1.15.

p.s., I have NOT tried this out yet.  My LEED projects thus far have
plenty of savings using an across-the-board 1.15 factor.  Since that's
easier and faster.....

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent"
<brent_griffith@...> wrote:
>
> You can't automatically use separate sizing factors for heating and
> cooling.  
> 
>  
> 
> (For a single air system that does both heating and cooling, it isn't
> clear how separate sizing factors would really play out for things like
> air flow rate.) 
> 
>  
> 
>  
> 
> ________________________________
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jonathan
> Hackersmith
> Sent: Friday, July 11, 2008 3:03 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: Re: [EnergyPlus_Support] Simple Sizing Parameter Question
> 
>  
> 
> Please let me know if something needs clarification. 
> 
>  
> 
> ----- Original Message ----
> From: hacker_jon <hacker_jon@...>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Sent: Thursday, July 10, 2008 3:50:16 PM
> Subject: [EnergyPlus_Support] Simple Sizing Parameter Question
> 
> Hello,
> 
> I have been reviewing the sizing parameter and zone sizing options. 
> These seem useful, but I am interested in modifying the sizing
> parameter say for heating and leaving cooling as is. Many of my sizing
> values are set to "AUTOSIZE". 
> 
> I have figured out that I can go into the *.eio file and look up the
> sizing of my components, modify it by the parameter I determine and
> replace that new value with the "AUTOSIZE" in my *.idf file. Is there
> an easier way to achieve a similair result?
> 
> Thanks,
> 
> Jon
>



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