Siemens was commissioned to carry out an energy-related renovation of the two campuses. Under the contract, the university paid for the renovation costs from the savings provided by the updated technologies.
To start, HAW students assessed the current state of the HVAC. Siemens then refined the statistics and calculated savings potential. Afterward, in collaboration with the customer, a range of measures were established for saving energy, such as exchanging around 20 ventilation and air conditioning systems. The building Automation system was upgraded to Desigo 5.1. With the modernization of the measurement and control system, the basis was set for better control of the buildings as well as for a comprehensive monitoring system. Around 9,000 lamps were updated to T5 fixtures equipped with an electronic ballast or LED technology.
In order to ensure the guaranteed savings and to optimize energy use for the future, Siemens takes care of monitoring and controlling the modernized systems. An integrated measurement concept continually records electricity, heating, cooling and water as well as the volumetric flows of the heating, ventilation, air conditioning and refrigeration units; defective elements are exchanged in the framework of the Energy Performance Contracting.