Hi Bldg-Sim Group,<div><br></div><div>I am working on variable refrigerant flow (VRF) system modeling using EnergyPlus to understand energy savings compared to other conventional systems. </div><div><br></div><div>For VRF modeling, I utilized the example file "VariableRefrigerantFlow_5Zone.idf". This example uses outdoor air mixer in each VRF indoor unit for the supply air which goes through cooling and heating coil to the zone inlet node. </div>
<div><br></div><div>But, a typical VRF system practice uses a separate DOAS system to reduce cooling and heating load in the VRF side only recirculating return air to be conditioned. </div><div><br></div><div>I am trying to add DOAS in the VRF modeling. The problem is that HVACTemplate:DOAS (in EnergyPlus 7.2 or 8) does not support this. </div>
<div><br></div><div>Is there anybody who did VRF system modeling with adding DOAS?</div><div><br></div><div>Thank you!</div><div><br></div><div>--</div><div>Sang Hoon Lee, Post-doc</div><div>Building Technology</div><div>
College of Architecture</div><div>Georgia Institute of Technology</div><div><br></div>