Energy Balances and Benchmarks of Non-Residential Buildings Examples of Federal Buildings Dr.-Ing. Olaf Böttcher Institute for Rehabilitation and Modernization of Buildings, Reg. Assoc. at the Technical University Berlin 05.11.2008 US Energieeffizienz Dr. Böttcher
Structure Introduction Commissioner for Energy in Federal Buildings Benchmarks in Federal Buildings Certification of the Energy Demand of Federal Buildings Monitoring of the Energy Consumption in Federal Buildings The New Building of the Federal Agency for Environment in Dessau Folie 2
Measures to reduce the energy demand in Buildings Federal Buildings General Introduction Development of Requirements for the Energy Demand in German Buildings 1995 2002 2004 2007 2009 2012 WSVO HeizAnlVO EnEV Modification EnEV I Modification EnEV II Modification EnEV III Modification EnEV IV Establishment of a Commissioner for Energy in Federal Buildings Guide for Sustainable Buildings Forced Monitoring of the Energy Consumption Certification of the Energy Demand Folie 3
Commissioner for Energy in Federal Buildings Tasks: Minimization of the energy demand/consumption in Federal Buildings Optimization of the energy supply concepts in Federal Buildings Broad use of renewable energies Monitoring of assorted Federal Buildings in the first years of operation Certification of the Energy Demand regarding to EnEV 2007 for assorted Federal Buildings Consultation of the Ministry in questions of energy-saving in Buildings Folie 4
Commissioner for Energy in Federal Buildings Methods: Activities in Federal Building Projects Definition of the specific energetic aims Participation in meetings Consultation of the building owner Preparation of assessments to the reached energetic quality in the different planning steps Monitoring of innovative systems (technical and structural) Monitoring of the Energy Consumption in assorted Federal Buildings Folie 5
Benchmarks in Federal Buildings Requirements regarding to EnEV Annual Demand of Primary Energie Q p Specific Coefficient for Heat Transfer by Transmission H T specific Requirements in Federal Buildings regarding to the Guide for Sustainable Building Energy Demand for Electricity 35 kwh/(m² NGF a) Energy Demand for Lighting in Offices 15 kwh/(m² NGF a) Energy Demand for Heating significant below the requirements regarding to the EnEV no Hot Water Supply in rooms with normal use no Cooling in rooms with normal use... Folie 6
Certification of the Energy Demand of Federal Buildings in Berlin (Assortment) Villa Borsig, Reiherwerder Bundesfinanzministerium Energy Certificates regarding to EnEV 2007 Bundeskanzleramt Bundesarbeitsministerium Bundesjustizministerium Bundesverteidigungsministerium Folie 7
Certification of the Energy Demand of Federal Buildings in Berlin Balance Method: DIN V 18599 Energy Balance: Heating Hot Water Supply Mechanical Ventilation Cooling Ligthing Folie 8
Percentage below the allowed Value regarding to EnEV 2007 Benchmarks of Federal Buildings in Berlin (Assortment) New Buildings H T ' H T ' - Ø Q P - Ø Q P ' Folie 9
Percentage below the allowed Value regarding to EnEV 2007 Benchmarks of Federal Buildings in Berlin (Assortment) Existing Buildings % 70 60 50 H T ' Q P ' 40 30 Q P - Ø H T ' - Ø 20 10 0 BMJ,BT1-4 BMAS BMBF BPA BMWi,E+F BMELV BMVBS,A Folie 10
Certification of the Energy Demand of Federal Buildings in Berlin Folie 11
BMWi,G AA,Neubau KAN BPrA BMBF,Neubau BMVBS,Neubau (D) BMAS,Neubau BMVBS,Bestand (A) BMAS,Bestand BMBF,Bestand BMWi,Bestand (E+F) BMELV,Bestand BMJ,Bestand BPA,Neubau BPA,Bestand Benchmarks in Federal Buildings in Berlin (Energy Demand for Heating) kwh/(m² 180 NGF a) 160 140 120 100 80 60 40 20 0 Folie 12
AA,Neubau BMWi,Bestand (E+F) BMBF,Bestand BMAS,Neubau BMJ,Bestand Büros BPrA BMAS,Bestand BMELV,Bestand BMVBS,Neubau (D) BMBF,Neubau BMVBS,Bestand (A) BMWi,G BMJ,Bibliothek KAN BPA,Bestand BPA,PBZ,Giebel,Neubau Benchmarks in Federal Buildings in Berlin (Energy Demand for Cooling) kwh/(m² 25 NGF a) 20 15 10 5 0 Folie 13
BMELV,Bestand BMWi,Bestand (E+F) BMBF,Bestand BMAS,Neubau BMBF,Neubau BMVBS,Neubau (D) BMVBS,Bestand (A) AA,Neubau BPA,PBZ BMWi,G BPrA BPA,Bestand BMAS,Bestand BMJ,Bestand KAN Benchmarks in Federal Buildings in Berlin (Energy Demand for Ventilation) kwh/(m² 18 NGF a) 16 14 12 10 8 6 4 2 0 Folie 14
BMWi,G AA,Neubau BPrA BMAS, Neubau BMVBS,Neubau (D) BMBF,Neubau BMVBS,Bestand (A) KAN BMELV,Bestand BMBF,Bestand BMWi, Bestand (E+F) BMAS,Bestand BPA,Neubau BPA,Bestand BMJ,Bestand Benchmarks in Federal Buildings in Berlin (Energy Demand for Lighting) kwh/(m² 35 NGF a) 30 25 20 15 10 5 0 Folie 15
Heizenergieverbrauchskennwert Energy consumption for Heating HKW in [kwh/(m kwh/(m² 2 NGF*a)] NGF a) Energy consumption in Federal Buildings in Berlin (Heating) 150 140 130 Vergleichswert nach EnEV 2007 für Ministerien (95 kwh/m 2 NGF *a) 120 110 100 90 80 70 60 50 40 30 Mittel 2001-2006 2005 2006 2007 keine Werte wegen Baumaßnahme BMG für 2007 BMFSJ für 2005-07 BMVBS ab 2006 mit EW 2 20 10 0 BMAS BMBF BMELV BMF BMFSJ BMG BMJ BMVg BMVBS BMWi Folie 16
Energy Stromverbrauchkennwert consumption for electrical SKW [kwh/(m devices 2 NGF*a)] in kwh/(m² NGF a) Energy consumption in Federal Buildings in Berlin 80 (Electricity) 70 Vergleichswert nach EnEV 2007 für Ministerien (50 kwh/m 2 NGF *a) 60 50 40 30 20 Mittel 2001-2006 2005 2006 2007 keine Werte wegen Baumaßnahme BMG für 2007 BMFSJ für 2006-07 BMVBS ab 2006 mit EW 2 10 0 BMAS BMBF BMELV BMF BMFSJ BMG BMJ BMVg BMVBS BMWi Folie 17
Building - UBA Dessau Foto: Busse Folie 18
UBA Dessau - Concept for Energy Supply Adsorption Chiller Compression Chiller Oil Electricity Free Cooling PV Gas Soil Heat Exchanger Solar Heat District Heat Heat Recovery Folie 19
Research Project EnBau: UBA Dessau TU Berlin Photovoltaikanlage; solargestützte Kälteerzeugung; Bezug zur Lehre IEMB Forschungskoordination Energiekonzept Verbrauchsmonitoring LBB SA, NL Ost Projektbegleitung BTU Cottbus Energetischer Beitrag EWT; Umwelt- Monitoring; Bezug zur Lehre UBA Projektbegleitung TU Dresden Begleitung EnBau ISE-Freiburg Langzeitmonitoring sha Gebäudeentwurf Planung/Ausführung Dokumentation HS Anhalt Dokument. Wärmedämmung, luftd. Ausführg.; Energieverbr.; Bezug z. Lehre ZWP Dokum. Planung EWT; Beratung Messkonz.; Begleitung Messph. Folie 20
UBA Dessau - Energetic Aims (planning phase) Annual Energy Demand (Heating) 36 kwh/(m² beh.ngf a) Annual Energy Demand (general) 66 kwh/(m² beh.ngf a) Annual Primary Energy Demand 75 kwh/(m² beh.ngf a) Folie 21
Summary The German Government has started a lot of activities to reduce the energy demand in buildings at an early stage. There are National Regulations for the energy demand in residential and non-residential buildings. The National Regulations are adjusted in time regarding to the European Regulations. There are continuative regulations for Federal Buildings. A Commissioner for Energy in Federal Buildings was established in 1995. The Commissioner is responsible in questions of energy demand and consumption in Federal Buildings. Folie 22
Thanks for your attention! Folie 23