[EnergyPlus_Support] Plant Loop Setting

["natasamdj" <natasamdj@xxxxxxxxxxx>]

Dear,
I have two questions about the Plant Loop settings. I have made a 
model with the Baseboard Heater: Water: Convective. In addition I 
have the real data, and I would like to adjust the simulation output 
with these real-life data.
1. I set the Loop Temperature Setpoint by using Set Point Manager: 
Outside Air. I found out in the output that E+ calculated the load 
so that water mass flow rate has been increased how the Loop 
Temperature is lower. In other words, how the outdoor temperature 
increases, the supply water temperature is decreased, and the water 
flow is increased. I have some real data, and I would like to 
combine that with the simulation results. Actually, I found out that 
E+ calculated almost the same return temperature for the different 
outdoor temperatures, while the supply temperature is decreased. 
Because of that the water flow has been increased all the time how 
the outdoor temperature is increased. How I can model different 
managing of the return temperature? Is it possible to model that the 
difference between the supply and return water temperature is 
constant (or almost) constant for the different outdoor conditions?
2. I found in the report output, that System Node Setpoint Temp for 
the demand side is calculated only for the design day, while for the 
other days it is zero (0). In this case the System Node Setpoint 
Temp for Demand side should be calculated regarding to Set Point 
Manager: Outside Air, and it is calculated exactly by this schema 
but only for the design day. In addition, the System Node Setpoint 
Temp is calculated correctly for all the nodes at Supply side, but 
not for the nodes at Demand side. What should I do to get these 
temperatures correctly for all other days at Demand side nodes?

If it is necessary I can send to my *.idf file.

Thank you in advance!

Natasa M.Djuric 






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