[Bldg-sim] EE4: Boiler/Cooling Tower Set Points, and Max Heating COP

[RobertWichert]

What software are you using, Justin?  I have seen EnergyPro require the 
cooling tower minimum water temperature to be above the boiler 
setpoint.  This might be correct for a water source heat pump system, 
but I don't think it is correct for a hot water reheat system, for 
instance.  I have never been able to get EnergySoft to tell me why this 
limitation exists.

You may have a different situation, but I have seen that error in EnergyPro.


Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068







===============================================


On 4/12/2012 12:00 PM, Justin Elkin wrote:
>
> Hello All,
>
> I had a couple questions that I was hoping someone could clear up for me.
>
> 1)Boiler and Cooling Tower Set points: The boiler set point states its 
> range from 32 °F -- 100 °F. But the program will not run if the set 
> point is over 65 °F. Has   anybody encountered this before? Is this 
> normal or should I be able to have a higher value? For the cooling 
> tower, is there a place where I can input the set points?
>
> 2)Max Heating COP: In the building tree under the Zone Level and in 
> the Mechanical Tab I can set the heating COP. It says in the EE4 Help 
> Guide that I should be able to set this value as high as 10. But the 
> program will not let me input anything higher than 8. Again, is this 
> normal and has anyone else experienced this? I am trying to model a 
> hybrid heat pump; therefore I would like to input the highest COP 
> possible.
>
> Please let me know if anyone can shed some light on the issues I've 
> expressed above. Thank you in advance.
>
> Cheers,
>
> *Justin Elkin, */LEED® Green Associate/**
>
> /  Mechanical Engineer-In-Training/
>
>   t: (902) 422-7393
>
>   f: (902) 423-4945
>
>   e:jelkin at mreng.ca <mailto:jelkin at mreng.ca>
>
>
>
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