1. Dr.-Ing. Peter Seifert; DBI Gas- und Umwelttechnik GmbH; Leipzig / Freiberg; Germany  Fuel cells for CHP: Existing Projects  Fuel cells for domestic use: Future Projects Fuel Cells – Building Integration

2. Existing Projects MITGAS Fuel Cell Project Location:MITGAS Office Building in Gröbers (near Halle / Sachsen-Anhalt) Heat use:  Office heating  Run the absorption chiller Power use:  Delivery into the grid

3. Waste gas heat 2% Remains 5% Own power consumption 5% Cooling losses 28% Power 36% High temp. heat 10% Low temp. heat 14% Natural gas MITGAS: Energy balance – first year of operation

4. 500 45 9,3 650 215 9,6 150 45 0,1 0 100 200 300 400 500 600 700 mg/m³ dry waste gas, 5 % oxygen NO x CO HC TA-LuftGas enginePC 25 C MITGAS: Reduction of emission

5. Kamenz Fuel Cell Project Location:Malteser Hospital Kamenz (near Dresden / Saxony) Heat use:  Hospital heating  Run the adsorption chiller Power use:  Delivery to the hospital Existing Projects

6. Kamenz: Data of the main components

7. Power central Solar collectors Fuel cell Kamenz: Bird’s-eye view

8. Auxiliary cooler for the fuel cell Cooling tower for the adsorp- tion chiller 20 m³ heat tank Heat cycle connections of the fuel cell Kamenz: Court

9. View into the power central (Jan. 2000) Adsorption chiller (MYKOM ADR 30) 105 kW cooling capacity Ice storage Capacity 400 kWh Kamenz: Power central

10. Kamenz: Main components of the project Natural gas Power Boilers Heat Solar collectors Compression chiller Adsorption chiller Cold heat Cooling ceilings Heat storage Ice storage Fuel cell

11. Kamenz: Energy distribution Fuel Cell Solar plant Cooling plant 200 kW 240 kW 220 kW 50 kW 1530 kW 105 kW 80kW 35 kW Ads. chiller Ice storage Comp. chiller Power Heat Cold heat

12. Kamenz: Fuel cell operating hours

13. Kamenz: Fuel cell efficiencies

14. Kamenz: Grid independent operation TimeEvent 13:35Entered I 80 - Run Grid Independent 14:15Entered I 50 - Run Grid Connected 14:46Entered I 80 - Run Grid Independent 15:41Entered I 50 - Run Grid Connected

15. Kamenz: Effects of the ice storage (hottest days of the year)

16.  Kinds of available fuel cells  Domestic application of fuel cells Future Opportunities

17. Company: Sulzer Hexis VaillantEFC Cell Type:SOFCPEMPEM Power:1 kW el1 – 4.6 kW el 1.5 kW el Heat:2.5 kW th 1.5 – 7 kW th 8 kW th + 12/16/22 kW th+ 25 – 50 kW th Efficiency:~ 85 %> 80 % > 70 % Available:Q3 / 20012002Q2 / 2002 (Field test)(Field test)(Field test) Fuel cells for domestic use

18. House of one‘s own: Consumption and generation mismatch

19.  Field test for 3 kinds of fuel cells in domestic projects  Co-operation in the DVGW Project “European Standardisation of Fuel Cells” DBI Future Projects

20. Domestic Application V EG P el P th consumer QHQH QWQW W el T T nat. gas waste gas boiler fuel cell heat tank heat hot water power nat. gas P el control

21. Power Mehrfamilienhaus-Siedlung mit PEM-Brennstoffzellen im Stromverbund Nat. gas HTHT HTHT HTHT HTHT Main control Energy opt. HTHT B FCFC B FCFC B FCFC FCFC B FCFC B Apartment houses with power coupled PEM fuel cells