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Re: [EnergyPlus_Support] infiltration sensibly cools house in summer
Bad URL eere.energy.gov/buildings........
--- Drury Crawley <drury.crawley@xxxxxxxxxx> wrote:
> No need to run EnergyPlus to calculate the monthly
> average outdoor temps...
> All this information and much more is included in
> the STAT report for the weather
> file. (Included on the EnergyPlus weather page:
> US:
>
http://www.eere.energy.gov/buildings/energyplus/cfm/weatherdata_us.cfm).
>
> The STAT file is tab-delimited so it can easily be
> read in to Excel.
>
> For Atlanta, the monthly average temps are:
>
> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
> 4.7 6.6 11.6 16.1 21 24.1 25.2 24.5 22.6 16.5 10.5
> 6.6
>
> ----- Forwarded by Drury Crawley/EE/DOE on
> 02/02/2004 02:55 PM -----
>
> <mjwitte@xxxxxxxx>
> 02/02/2004 02:47 PM
>
> To:
> EnergyPlus_Support@xxxxxxxxxxxxxxx@internet@HQMAIL
> cc:
> Subject: Re: [EnergyPlus_Support] infiltration
> sensibly cools house in summer
>
> In your simulation, is the house conditioned 24hrs a
> day 365 days a year.; If
> the house is always closed up, and the HVAC is
> always on, which is typical of a
> simulation model, then it seems quite reasonable
> that the average outdoor air
> temperature over the course of a summer is cooler
> than the indoor cooling
> setpoint.; To answer this for yourself, have
> EnergyPlus report the average
> outdoor tempature on a monthly basis.; If this is
> below your cooling setpoint,
> then infiltration has a net cooling effect.; The
> published data may be based on
> measurements or calculations in which the HVAC
> system is not on during mild
> days when the house would likely be cooled by open
> windows.;
>
> Mike
>
>
> On 31 Jan 2004, at 19:54, Ian Doebber wrote:
>
> > Analyzing my summer component loads for Atlanta
> GA, I discover that the net
> > sensible effect of infiltration is negative.; In
> other words, infiltration
> > sensibly overall cools my house during the
> summer.; The infiltration latent
> > effect is as it should be, adding heat into the
> house.; When I view pre-existing
> > data on summer infiltration effects on homes the
> reported effect is that it
> > heats the house.; I am wondering if anyone else
> has had resultant data showing
> > sensible cooling effect of infiltration during the
> summer and that the published
> > summer effects of infiltration adds the latent and
> sensible infiltration effects
> > together to get a rough estimate of the overall
> infiltration effect during the
> > summer.;
> >
> > If the published data adds latent and sensible
> infiltration effects during the
> > summer, then is this the same process used for
> winter infiltration effects or
> > does only the sensible infiltration effect get
> reported since the latent load is
> > insignificant during the winter.
> >
> > Thanks
> > Ian
> >
> > [Non-text portions of this message have been
> removed]
> >
> >
> > The primary EnergyPlus web site is found at:
> > http://www.energyplus.gov
> >
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> >
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>
>
========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support;;;;;
> EnergyPlus-Support@xxxxxxxx
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