Siemens renovated an office building in Zug, Switzerland, which included the replacement of the MEP systems. The building achieved a LEED BD&C Gold certification.
Baumann provided fundamental and enhanced commissioning and optimized the operation during the first year of operation with monitoring-based commissioning (MBCx).
Heating and cooling, as well as hot water and process heat for the labs, are provided by water-water heat pumps. Water from the lake near Zug, 0.7 miles away, serves as the heat source and sink for the geo-exchange system.
The main features that contribute to the energy efficiency of the building:
- Heat Pump system utilizing lake water
- Passive cooling with lake water
- Dedicated outdoor air systems with heat recovery and high-efficiency fans
- High-quality facade
- Motion and daylight sensors
Some of the findings identified by the trend data analysis for MBCx are:
- Supply air temperatures higher than designed (>22 °C in summer). Over 50% of the data points are outside of the tolerance (highlighted area in the graph below)
- Heating in the summer with an ambient temperature of more than 26 °C
- AHU not operating according to the designed schedule
The resolution of those items lowered energy consumption and increased thermal comfort.