Byeongho's profile - activity

I want to do co-simulation between EnergyPlus and Matlab, and I can do that without any errors.

But one trouble occurred in co-simulation, which is as below.

The data which was sented to Matlab from EnergyPlus takes two time-step until the data returns to Energyplus.

As shown in attached picture, first row data of EnergyPlus is same with second row data of EP-Matlab data and third row of EP-Matlap-EnergyPlus data. where, each column names mean the exchange history.

Using current data, I want to control next time-step in EnergyPlus through Matlab.

How can i adjust the timestep in bcvtb?

Thank you for your answer. According to the Engineering Reference, the IR radiation can be exchanged but convective heat transfer is ignored since the convective heat gain coefficient is set to 0. and when the room air is returned, the airflow from lower zone to upper zone is possible. right? Therefore, when the lower zone load is calculated, except the ceiling(virtual surface between subzones), just convective heat gains of walls and floor are involved. Consquantly, the upper subzone condition can not influence on the lower subzone load. right?

In EnergyPlus simulation, I want to know how is the Occupied Subzone load calcuated in UFAD system clearly such as calculation proceedure, affecting factor and ect. I think, actually, the Occupied subzone is affected by Non-occupied subzone, radiation from ceiling surface and ect. In order to know that, what should i refer to?