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[EnergyPlus_Support] Question about enthalpy contoled openings.

I have a question about Airflow Network. 

I almost entered all the related inputs but don't know how to do enthalpy control of openings. 

There are 4 Ventilation option (Always on, Temperature, Enthalpy, No vent) in the Airflow network opening control.

and under the that blank, there are blanks about "lower delta T,H" and "upper delta T,H"

"delta T" isn't a problem. 

But I don't know what value should be in the "delta H" blank.

When I run simulation choosing enthalpy control without entering delta H.(Delta T is set, lower:0 upper:8, setpoint : 26'C) 

There's no error occured.

Moreover the cooling loads is lower than temperature control.

What happened? 

Every inputs are the same except control mode(one is Temperature, another one is Enthapy and Delta H remained blank)


If you have experience on this, could you give a referal value of delta H or advice to me? 


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