Comparison between Energy Simulation and Monitoring Data in an Office Building

One of the most important steps in retrofitting process a building is to understand its pre-retrofitting stage energy performance. The best choice for carrying this out by means calibrated simulation (BES) model. Then, testing different solutions validated model allows quantifying improvements that may be obtained, order choose suitable solution. In work, based on available detailed drawings, constructive details, operational data and sets obtained minute basis (for whole year) from dedicated monitoring system, calibration an in-use office has been carried out. It possible construct white box Design Builder software. comparing output indoor air temperature, lighting consumption heating against monitored data, some envelope parameters inner inertia were fine tuned obtain fits fulfilling ASHRAE criteria. Problems found during fitting how they are solved explained detail. firstly performed hourly typical winter summer week; then, year results compared data. show good agreement with criteria mean bias error (MBE).