[Equest-users] Meters

[Brian Fountain]

1) DOE reports both a* site* energy use and a *source *energy use 
value.  Site would be the energy input to your building.  Source would 
be the energy input to the generating station or district energy 
provider.  Setting the efficiency to 0.6 would not impact your loads or 
any site energy #s.  It would increase the *source* energy reported to 
take into account the generation efficiency and distribution losses of 
the energy provider.  Manual has a better explanation.

2)  There is a capacity and capacity ratio for the chilled water & steam 
meters.  Typically the capacity ratio would be 1 so the meter will 
deliver whatever the building calls for.  You can set these lower to 
account for the utility capacity available to your building.  If they 
are lower, that may account for your unmet loads.  It could also be your 
pump flow rates, your chilled water temperature and/or your hot water 
temperature.  How are the hot water & chilled water loops sized -- 
perhaps fixed #s would be better than sizing ratios.  Check SS-R reports 
to see which zones are affected by unmet hours to isolate the issue.

Not sure this helps much.

Seth P. Spangler wrote:
>
> Hello All,
>
>  
>
> I have two questions about steam/chilled water meters.
>
>  
>
> 1)                          There is a spot to specify equipment 
> efficiency àsource to site efficiency. Does this factor affect the 
> amount of steam/chilled water required for my system? In other words 
> if I set the efficiency to 1 then the load in the reports is what my 
> equipment needs to satisfy my conditions. If I set the efficiency to 
> .6 then will my loads will be higher to compensate for losses in 
> transmission from the plant to my site?
>
> 2)                          My unmet load hours doubled when I removed 
> the chillers/boilers and replaced them with meters. Does anyone have 
> an explanation for why this occurs or how I can fix it?
>
>  
>
> Thanks in advance for your help.
>
>  
>
> Seth Spangler, LEED® AP
>
> Design Engineer
>
>  
>
> RMF Engineering, Inc
>
> Ph: (843) 971-9639 ext:108
>
> Fax: (843) 971-9641
>
> sspangle at rmf.com
>
>  
>
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