Dublin Outer City Border, Ireland, West Europe (GPS: +53° 25' 8.06", -6° 24' 59.99") – Flat land terrain. Climate zone: temperate maritime; modified by North Atlantic Current; mild winters, cool summers; consistently humid; overcast about 80% the time
• 5 Office buildings approx 16 years old, retrofitted 6 to 3 years ago
• 1 Data Centre running 24/7
• Office buildings actively used by a total of 2000 persons. Main usage during working week, HVAC operation hours 7am – 7pm.
Buildings’ Energy Performance Monitoring
About 3 years of data available: Gas, water and electricity is monitored for all buildings and for the main consumers such as HVAC, chiller, pumps, UPS with a total of ca. 2800 datapoints (DP). The IBM research living lab building is highly monitored with 2.500 DPs including 1520 Lighting Management DP and 150 PIR sensors; 940 DP in the BAS with thermal and cooling energy metering and HVAC systems; 10 Access Counters; 10 MapUme occupancy monitoring points are installed; 354 smart electricity meters; 16 water meters; 1 Weather Station.
The Current GAP
The IBM campus is regularly restructured with resulting change of building usage. This renders it hard to predict consumption and derive energy saving plans. Simulations models for the IBM research living lab are available and calibrated. Due to the specific building structure—being a refurnished warehouse—the gap between the uncalibrated model and the real usage was larger than 60% with a reference year. The baseline analysis in the public deliverable D8.3 in Tribute [PBPL14] revealed that simple predictions based on the previous year’s consumption also failed significantly. For example, below shows the performance gap, the large 80% gap in 2014 was due to the move in of additional business units and changes in the electric distribution network.