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[EnergyPlus_Support] Re: Boiler efficiency according to ASHRAE (e.g. according to CFR)

Thank you Javed,
it seems that the test conditions are indicated here:
http://www.ahrinet.org/App_Content/ahri/files/standards%20pdfs/BTS-2000.pdf
During the test the "outlet water temperature" has to be maintained at "180°F"
(i.e. 82°C). Unsurprising, 82°C is also the hot-water supply temperature for the
baseline model according to G3.1.3.3 (ASHRAE 90.1-2007).

Modeling the thermal efficiency of the baseline model as constant would be a good idea? It doesn't correspond to a real boiler, but to a reference boiler.
Regards
Francesco


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Javed Iqbal <eee.javed@...> wrote:
>
> Hi,
> 
> You can find 10 CFR Part 431 boiler test procedure here. look at page no.
> 461 .
> http://www.gpo.gov/fdsys/pkg/CFR-2011-title10-vol3/pdf/CFR-2011-title10-vol3-part431.pdf
> 
> 
> Check this for Boiler efficiency. ..
> http://www.designbuilder.co.uk/helpv3/Content/Boilers.htm
> 
> 
> On Fri, Aug 10, 2012 at 5:00 PM, FrancescoP <direzionecontraria@...>wrote:
> 
> > **
> >
> >
> > I'm developing a baseline model for LEED certification. The boiler
> > efficiency has to respect Table 6.8.1F of ASHRAE 90.1:2007. The thermal
> > efficiency Et shall be equal to 80% according to the test procedure 10 CGR
> > Part 431. I'm modeling the boiler using the object Boiler:HotWater. I
> > imposed the "nominal thermal efficiency" equal to 0,8 but what about the
> > "normalized boiler efficiency curve"? Any suggestion, please?
> > Do you have any information regarding the conditions of the test procedure
> > 10 CFR Part 431?
> > With Regards
> > Francesco Passerini
> >
> >  
> >
> 
> 
> 
> -- 
> 
> 
> Javed Iqbal, LEED AP, CEA
> Energy Analyst
>



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