[EnergyPlus_Support] Dometsic Hot Water System modeling

["aboyemeplus" <Merid.Aboye@xxxxxxxxxxxxxx>]

Hi,

I am trying to model a simplified domestic hot water system which 
consists of a "Water Heater" and a "Water Use Connections" object 
connected to the "Use Side" of the Water Heater. Please help me 
understand the definition of some of the fields used in these 
objects.

1) On page 500 of the I/O reference, what is the object of reference 
used to describe "Use Side Inlet Node" and "Use Side Outlet Node"? 
Or, referring to Figure 68 (pg 493), is the Red Node on the "Use 
Side" "Use Side Inlet Node" or "Use Side Outlet Node"? 

2) Can the "Source Side" fields be left blank if the energy source 
is specified as an electric heating element within the Water Heater? 
What exactly does the "Source Side" represent in a "Water Heater" 
object? Can you please provide a real life example?

3) Does the "Outlet Node" of a "Water Use Connections" object 
represent return water to the water heater? In other words, is 
the "Use Side Inlet Node" of a water heater the same as the "Outlet 
Node" of a "Water Use Connections" object?      

4) Is it possible to simulate DHW systems with hot water 
recirculation using the current version of E+? If so, can you 
provide me with generalized guidance and/or point to a sample file 
of relevance?

Thank you for your support.

Merid




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