A framework for simulation-based real-time whole building performance assessment

TitleA framework for simulation-based real-time whole building performance assessment
Publication TypeJournal Article
Year of Publication2012
AuthorsPang, Xiufeng, Michael Wetter, Prajesh Bhattacharya, and Philip Haves
JournalBuilding and Environment
Volume54
Start Page100
Pagination100-108
Date Published08/2012
ISSN0360-1323
Keywordsbuilding controls virtual test bed, building performance, energy modeling, energyplus, real-time building simulation
Abstract

Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures. One approach to addressing this problems is to compare the predictions of an energy simulation model of the building to the measured performance and analyze significant differences to infer the presence and location of faults. This paper presents a framework that allows a comparison of building actual performance and expected performance in real time. The realization of the framework utilized the EnergyPlus, the Building Controls Virtual Test Bed (BCVTB) and the Energy Management and Control System (EMCS) was developed. An EnergyPlus model that represents expected performance of a building runs in real time and reports the predicted building performance at each time step. The BCVTB is used as the software platform to acquire relevant inputs from the EMCS through a BACnet interface and send them to the EnergyPlus and to a database for archiving. A proof-of-concept demonstration is also presented.

LBNL Report Number

0360-1323

Refereed DesignationUnknown
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