TY - GEN
T1 - Modeling and calibration of a variable refrigerant flow (vrf) system with a dedicated outdoor air system (doas)
AU - Kim, Dongsu
AU - Cho, Heejin
AU - Im, Piljae
AU - Cox, Sam
N1 - Publisher Copyright:
© 2017 Building Simulation Conference Proceedings. All rights reserved.
PY - 2017
Y1 - 2017
N2 - With increased use of variable refrigerant flow (VRF) systems in the U.S. building sector, there have been gaining interests in capability and rationality of various building energy modeling tools to simulate VRF systems. This paper presents modeling and calibration of a VRF system with a dedicated outdoor air system (DOAS) by comparing to the measured data from a real building and system. Modeling and calibration of a VRF-DOAS model were performed using the whole-building simulation, U.S. DOE's EnergyPlus version 8.1, with the measured data collected from an occupancy emulated research building, Flexible Research Platform (FRP), at Oak Ridge National Laboratory (ORNL). The initial building model was built, and the original EnergyPlus code was modified to model a specific DOAS installed in the FRP. The VRFDOAS model can reasonably predict the performance of the actual VRF-DOAS system based on the criteria from ASHRAE Guideline 14-2014. The calibration results show that hourly CV-RMSE and NMBE would be 15.7% and 3.8%, respectively, which is deemed to be calibrated.
AB - With increased use of variable refrigerant flow (VRF) systems in the U.S. building sector, there have been gaining interests in capability and rationality of various building energy modeling tools to simulate VRF systems. This paper presents modeling and calibration of a VRF system with a dedicated outdoor air system (DOAS) by comparing to the measured data from a real building and system. Modeling and calibration of a VRF-DOAS model were performed using the whole-building simulation, U.S. DOE's EnergyPlus version 8.1, with the measured data collected from an occupancy emulated research building, Flexible Research Platform (FRP), at Oak Ridge National Laboratory (ORNL). The initial building model was built, and the original EnergyPlus code was modified to model a specific DOAS installed in the FRP. The VRFDOAS model can reasonably predict the performance of the actual VRF-DOAS system based on the criteria from ASHRAE Guideline 14-2014. The calibration results show that hourly CV-RMSE and NMBE would be 15.7% and 3.8%, respectively, which is deemed to be calibrated.
UR - http://www.scopus.com/inward/record.url?scp=85107567909&partnerID=8YFLogxK
U2 - 10.26868/25222708.2017.373
DO - 10.26868/25222708.2017.373
M3 - Conference contribution
AN - SCOPUS:85107567909
T3 - Building Simulation Conference Proceedings
SP - 2542
EP - 2548
BT - 15th International Conference of the International Building Performance Simulation Association, Building Simulation 2017
A2 - Barnaby, Charles S.
A2 - Wetter, Michael
PB - International Building Performance Simulation Association
T2 - 15th International Conference of the International Building Performance Simulation Association, Building Simulation 2017
Y2 - 7 August 2017 through 9 August 2017
ER -
