Model duct pressure loss, temperature loss and leakage without Airflow Network

asked 2021-05-03 07:42:48 -0500

energy-modeling gravatar image

updated 2021-05-06 15:41:21 -0500

We are running python cosimulation for our project where EnergyPlus is used for calculating load of the building using geometry model. We have our own model in python to calculate supply air flow and discharge air temperature etc. of the HVAC equipment that is selected to serve the zone. In EnergyPlus, ZoneHVAC:IdealLoadsAirSystem is used and its supply air flow, temperature and humidity ratio are overwritten using outputs from our model in python. It is all working well.

The study requires evaluating the impact of duct pressure and temperature losses. Also, impact of duct leakage need to be evaluated a) in the zone temp/hum ratio where ducts are located and b) in energy consumption . AirflowNetwork can not be used here because there is no air loop (no AirLoopHVAC).

Can anyone suggest some model or relevant study that can be used to implement in python to account for duct pressure/temperature and leakage losses? We are hoping, a combination of OtherEquipment, along with pressure, temperature, leakage loss model will help us sail through this. Any help would be much appreciated.

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