Project in brief Building characteristics OWNER : Politecnico di Milano YEAR OF ERECTION: 1961 NET FLOOR AREA: 2,272 m² UTILIZATION: University building – mainly offices CONSUMPTION OF ELECTRICITY: 580,000 kWh/a (2008/09), 270 kWh/(m²�a) (considering cooling for server room) CONSUMPTION OF HEATING: 200,000 kWh/a (2006), 88 kWh/(m²�a) BUILDING ENVELOPE: Building is made of bricks and con- crete. Windows are out of aluminium, double glazed, endowed with a horizontal shadowing system BUILDING SERVICES: π District heating with a heating central at the university campus π Compression chiller located on the roof π Two air handling units, one of them with heat recovery π Hot water supply by small electrical boilers Demonstration Building | Informatic Systems Milan | Page 1 DEMONSTRATION BUILDING: INFORMATIC SYSTEMS DEPARTMENT, MILAN (I) | MULTI PURPOSE BUILDING STUTTGART | DISTRICT HOSPITAL HAGENOW | MINISTRY DüSSELDORF | KREUZGEBäUDE ESSEN | STATE TREASURY HELSINKI | HUT ENGINEERING DEPARTMENT ESPOO | AURORA 2 JOENSUU | SENATE HEADQUARTERS HELSINKI | INFORMATIC SYSTEMS MILAN | LECTURE HALLS MILAN ELECTRONICS DEPARTMENT MILAN | DUKA HOUSE GOTHENBURG | NORDSTADEN GOTHENBURG Renovation of the ventilation system achieves 4 % of savings The amount of air change compared to the needs is higher than what is necessary. Moreover the energy recovery is only one of the air handling unit. The winter humidification is also disabled. Globally the building shows some deficiencies on the ventilation system. The two air handling units work in a different manner and the amount of supply air is not correct. Besides, some local discomfort can be highlighted which is related to the central air treatment. Those are linked to a false local calibration, which lead to overheating problem in some rooms (the most sun exposed) and sub-cooling of the basement rooms (computer room). Overview Kind of data acquisition Data logger (Energy Team) Yearly energy cost 95,000 Euro Cost for installation of data acquisition for minimal data set 32,000 Euro = 34 % of yearly energy cost Estimated possible savings 4,000 Euro/year = 4 % of yearly energy cost Simple pay back (of data acquisition only) 8 year About Building EQ BuildingEQ is a project in the Intelligent Energy Europe Pro- gramme of the European Commission. BuildingEQ aims at strengthening the implementation of the EPBD (Energy Per- formance of Buildings Directive) by linking the certification process with commissioning and optimisation of building performance. Within the scope of the project, methodologies and tools are to be developed that can be used for ongoing commissioning and optimisation of non-residential buildings using gathered data from the certification process according to the EPBD. The emphasis will be on feasibility and cost-effectiveness of energy reduction measures with regard to building practice. Main target groups are the industry for Facility and Energy Management, real estate owners, energy agencies and energy consultants. www.BuildingEQ.eu Imprint Published by: Fraunhofer Institute for Solar Energy Systems Freiburg / Germany, www.ise.fraunhofer.de Energieagentur Regio Freiburg GmbH Freiburg /Germany, www.energieagentur-freiburg.de info @energieagentur-freiburg.de Design: triolog – kommunikation mit energie Freiburg / Germany, www.triolog-web.de Disclaimer The sole responsibility for the content of this Information lies with the authors. It does not necessarily reflect the opinion of the European Communities. The European Commission is not responsible for any use that may be made of the information contained. Results of the Building EQ project π Energy saving potential in the operation of buildings 5 - 30 % π Realisiation of these potentials with low or no investment costs π BuildingEQ methods and tools allow quick and cost efficient detection of these potentials π Ongoing performance evaluation is prerequisite for energy efficient operation π Consortium suggests amendment of EPBD with mandatory performance monitoring Supported by European Commission www.BuildingEQ.eu The consortium at a project meeting in Stuttgart ITALY: MILAN Project Partner Politecnico di Milano Dipartimento di Energia Prof. Livio Mazzarella Via Lambruschini, 4 20156 Milano/ Italia Telephone: +39-02-23991-3867 [email protected] www.energia.polimi.it Building Owner Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano/ Italia www.polimi.it