Presentation on theme: "Less oil for heating Oil-condensing boilers are becoming standard Georg Benke, Günther Simader E.V.A. - The Austrian Energy Agency Vienna, Austria Cosponsored."— Presentation transcript:
Less oil for heating Oil-condensing boilers are becoming standard Georg Benke, Günther Simader E.V.A. - The Austrian Energy Agency Vienna, Austria Cosponsored by:
Final consumption of oil for heating in the residential sector Source: Enerdata May 2003, E.V.A.
New situation on the market nearly all oil boilers manufactures have at least one oil condensing boiler on the market improved quality of oil with less than 50 ppm sulphur standard in Austria: 1000 ppm standard in Germany: 2000 ppm new boiler designs and wall mounted new materials two step or modulating oil burner Higher oil price (46,6 Cent / Liter (17.5.2004, Austria)
Parameters for the use of the gross calorific value of oil and gas UnitOilGas Gross calorific valuekWh/l or per Nm 3 10.611.1 Net calorific valuekWh/l or per Nm 3 10.0 Densitykg/l or kg/ Nm 3 0.850.754 Ratio of gross to lower heating value[ / ]1.061.11 Amount of condensatel/kWh u 0.861.63 Dew point temperature (based to lambda of 1.2 and 50% humidity) °C47.056.3
Efficiency comparison with oil Low temperature boiler Condensing boiler Heat value 10 kWh/l Calorific value 10,6 kWh/l Losses over water vapour Heat losses (flue gas, Radiation) Energy use for heating 94 % NT 75/60°C Profit from water vapour Heat gain from flue gas Profit with calorific value ca. 104 % ca. 94 % Losses annual efficiency: 98 %
Annual energy consumption and outside temperature (heating water temperature 75°C/60°C ) 40/ 30°C up to 105,5 % 70/ 50°C up to 102,5 %
Oil condensing technology - three different solutions Heat transfer to the burner air lower efficiency (but higher than low temperature boiler) able to work with higher heating temperature larger heat exchanger very common head transfer within the boiler new design high requirement of the material less space (wall mounted)
oil - condensing boiler with larger heat exchanger
Economy and Future Outlook è additional costs for oil condensing are about 700 Euro new chimney for oil condensing boiler is cheaper than a new chimney for a low temperature boiler pay back period about 8 to 12 years (40 Cent/ liter) Oil condensing boilers are technical standard but they should become market standard !
Promoting oil condensing boilers è E.V.A. is supporting market transformation brochure (32 pages for decision maker) folder for end users market overview expert conference (last week January 2004)