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[EnergyPlus_Support] Re: Water Heater Question



Hello all,

I also have an aside question related to the water heater. If the 
boiler is supplying hot water to the unit and it is connected to 
the 'source side', does the water heater's source connections have 
to be on the supply side that water loop? 

I have noticed this is various examples of the water heater's use. 
Thanks again, I appreciate any input.

Kind regards

-Elmer

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Elmer Morrissey" 
<elmofuddly@...> wrote:
>
> Hello all,
> 
> Is it possible to link a water heater with a boiler cicuit (which 
is 
> additionally heated via an electric internal unit) and then 
schedule 
> the use as seen below...
> 
> WATER HEATER:MIXED,
>     J5,                      !- Name
>     0.5,                     !- Tank Volume {m3}
>     Hsched:1,                !- Setpoint Temperature Schedule
>     ,                        !- Deadband Temperature Difference 
> {deltaC}
>     80,                      !- Maximum Temperature Limit {C}
>     CYCLE,                !- Heater Control Type
>     5000,                    !- Heater Maximum Capacity {W}
>     0,                       !- Heater Minimum Capacity {W}
>     ,                        !- Heater Ignition Minimum Flow Rate 
> {m3/s}
>     ,                        !- Heater Ignition Delay {s}
>     Electricity,             !- Heater Fuel Type
>     1,                       !- Heater Thermal Efficiency
>     ,                        !- Part Load Factor Curve
>     0,                       !- Off-Cycle Parasitic Fuel 
Consumption 
> Rate {W}
>     Electricity,             !- Off-Cycle Parasitic Fuel Type
>     0,                       !- Off-Cycle Parasitic Heat Fraction 
To 
> Tank
>     0,                       !- On-Cycle Parasitic Fuel 
Consumption 
> Rate {W}
>     Electricity,             !- On-Cycle Parasitic Fuel Type
>     0,                       !- On-Cycle Parasitic Heat Fraction 
To 
> Tank
>     SCHEDULE,                !- Ambient Temperature Indicator
>     Hsched:2,                !- Ambient Temperature Schedule
>     ,                        !- Ambient Temperature Zone
>     0,                       !- Off-Cycle Loss Coefficient To 
> Ambient Temperature {W/K}
>     ,                        !- Off-Cycle Loss Fraction To Zone
>     0,                       !- On-Cycle Loss Coefficient To 
Ambient 
> Temperature {W/K}
>     ,                        !- On-Cycle Loss Fraction To Zone
>     1.111111E-06,            !- Peak Volumetric Use Flow Rate 
{m3/s}
>     HWSschdule:J5,           !- Use Flow Rate Fraction Schedule
>     Hsched:3,                !- Cold Water Supply Temperature 
> Schedule
>     ,                        !- Use Side Inlet Node
>     ,                        !- Use Side Outlet Node
>     1.0,                     !- Use Side Effectiveness
>     J5:Pin,                  !- Source Side Inlet Node
>     J5:Pout,                 !- Source Side Outlet Node
>     1.0;                     !- Source Side Effectiveness
> 
> I am having problems with my configuration. I tried using a DHW 
unit 
> on the use side however I still recieve zero loads. Can anyone see 
> something that I may be missing?
> 
> Kind regards
> 
> -Elmer
>






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