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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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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)

9 PARTNER, 4x IND, 4x RES, 1x 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,--

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TECHNICAL CONCEPT

6

Cool flame vaporizerPorous burner

Condensing boiler

Oil nozzle Bosch HDEV 67 °

Ignition electrode

Secondary air

Cool flame Vaporizer

Porous burner

Gas/gas heat exchanger

Mixing chamber

Zone C

Exhaust

Primary air

Cool Flame Product

Flame detection

Preheated secondary air

Zone A

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COOPERATION OF PARTNERSRWTH EST Aachen (D), NTUA Athens (GR)

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COOPERATION OF PARTNERS LSTM Erlangen (D), IST Lisbon (P), PTC Balerna (CH)

START

STOP

X

Y

0 0.05 0.1 0.150

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.1

0.11

0.12

0.13

0.14

T

19501850175016501550145013501250115010509508507506505504503502931

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COOPERATION OF PARTNERSHOVAL Vaduz, (LI), CSEM Neuchatel (CH)

HOVAL (Li) CSEM (CH)

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COOPERATION OF PARTNEROMV 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

Vaporizer Burner

Oil 35°C

Air 20°C

Flue gas

Cool Flame Conversion: 2.3 kW burner power -> 13.8% 23 kW burner power -> 11.8%

Cool Flame product 250°C

Heat lossesapp. 50 W

0%

2%

4%

6%

8%

10%

12%

14%

16%

0 5 10 15 20 25

burner power in kW

fuel

co

nve

rsio

n C

oo

l Fla

me

conversion needed

conversion staging 2

Heat balance of the cool

flame vaporizer

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PROJECT STATUS

burnerMix

270°C200°C

cold flameproducts400°Cprim = 0,4

sek = 0,8

primaryair, 20°C

secondaryair, 20°C preheater

vaporizerburner

Mix

270°C200°C

cold flameproducts400°Cprim = 0,4

sek = 0,8

primaryair, 20°C

secondaryair, 20°C preheater

vaporizerburner

Mix

270°C200°C

cold flameproducts400°Cprim = 0,4

sek = 0,8

primaryair, 20°C

secondaryair, 20°C preheater

vaporizer

Gas/gas heat exchanger

Zone A

Zone C

Ignition electrode

Flame detection sensor

New Porous burner design and burner in operation

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PROJECT STATUS

0 5 10 15 20 250

30

60

90

120

150E

mis

sion

s [

mg/

kWh]

CO 1st versionNOx 1 st versionCO 2 nd versionNOx 2

nd version

Power [kW]

1st version:preheating of the entire airTair,total = 350 oCPvaporizer = 3.5 - 18 kW ; = 1,35

2nd version:preheating of the secondary airTair,sec = 200 oCPvaporizer = 2.5 - 23 kW ; = 1,25

ENOX = 120 mg/kWhENOX = 120 mg/kWh

ECO = 60 mg/kWhECO = 60 mg/kWh

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