BIOFLAM
APPLICATION OF LIQUID BIOFUELS IN NEW HEATING
TECHNOLOGIES FOR DOMESTIC APPLIANCES BASED
ON COOL FLAME VAPORIZATION AND POROUS
MEDIUM COMBUSTION
OMV AG - Competence Center Heating Fuels
Thomas H. Brehmer
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9 PARTNER, 4x IND, 4x RES, 1x EU
OMV AG Vienna (A)
RWTH EST Aachen (D)
LSTM Erlangen (D)
HOVAL Vaduz (LI)
IST Lissabon (P)
NTUA Athen (GR)
PTC Balerna (CH)
CSEM Neuchâtel (CH)
EHI (EU)
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CONTENT
 Market situation
 Project aims
 Technical concept
 Cooperation of partners
 Project status
 Summary and outlook
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MARKET SITUATION
 Emissions of NOx and CO2 per kWh of
conventional oil heating systems exceed
emissions of gas heating systems
 Conventional oil heating systems are not
certified for biofuel
 State of the art oil burners can only be
modulated in a very small power range
 Condensing boilers for oil are not widely
accepted or available
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PROJECT AIMS
Development of an oil fired
condensing boiler with the following
attributes:

Operation with biofuels
 Reduction of NOx emissions of 50 %
compared to conventional oil fired
 Minimum power-modulation 1:10
 Condensing boiler
 Cost of production: € 2500,-Mehr bewegen.
TECHNICAL CONCEPT
Porous burner
Cool flame vaporizer
Condensing boiler
6
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COOPERATION OF PARTNERS
RWTH EST Aachen (D), NTUA Athens (GR)
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COOPERATION OF PARTNERS
LSTM Erlangen (D), IST Lisbon (P), PTC Balerna (CH)
START
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COOPERATION OF PARTNERS
HOVAL Vaduz, (LI), CSEM Neuchatel (CH)
HOVAL (Li)
CSEM (CH)
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COOPERATION OF PARTNER
OMV AG, Vienna, (A), EST Aachen (D), NTUA Athens (Gr)
 Fuel characterisation
 Production of Blends
 Fuel Stabilisation
 Tests at test rigs
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PROJECT STATUS
Heat losses
app. 50 W
Cool Flame
product 250°C
Oil 35°C
Vaporizer
Burner
Flue gas
Air 20°C
Cool Flame Conversion: 2.3 kW burner power -> 13.8%
23 kW burner power -> 11.8%
Heat balance
of the cool
flame
vaporizer
fuel conversion Cool Flame
16%
14%
12%
10%
8%
6%
4%
conversion needed
2%
conversion staging 2
0%
0
5
10
15
20
25
burner power in kW
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PROJECT STATUS
prim = 0,4
primary air, 20°C
cold flame products
400°C
vaporizer
Mix
burner
secondary air, 20°C
sek = 0,8
preheater
270°C
200°C
Flame detection sensor
Zone A
New Porous burner
design and burner in
operation
Zone C
Ignition electrode
Gas/gas heat exchanger
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PROJECT STATUS
150
1st version:
preheating of the entire air
Tair,total = 350 oC
Pvaporizer = 3.5 - 18 kW ;  = 1,35
120
Emissions [mg/kWh]
ENOX = 120 mg/kWh
2nd version:
preheating of the secondary air
Tair,sec = 200 oC
Pvaporizer = 2.5 - 23 kW ;  = 1,25
90
ECO = 60 mg/kWh
60
CO 1st version
NOx 1 st version
CO 2 nd version
NOx 2nd version
30
0
0
5
10
15
20
25
Power [kW]
BIOFLAMEMISSIONEVERSION1UND2 | 4.7.2003
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SUMMARY AND OUTLOOK
 System certification
in September 2004
 Field tests in Austria
and Switzerland
 5 prototypes in 2004
 2 prototypes in the
field in 2004
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