Less oil for heatingOil-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

Austria 30,1 %Belgien 40,5 %Finland 22,1 %France 24,8 %Germany 32,5 %Luxembourg 50,6 %Spain 33,1%Switzerland 54,2 %European Union (15) 23,3 %

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

Unit Oil Gas

Gross calorific value kWh/l or per Nm3 10.6 11.1Net calorific value kWh/l or per Nm3 10.0 10.0Density kg/l or kg/ Nm 3 0.85 0.754Ratio of gross to lower heating value [ / ] 1.06 1.11Amount of condensate l/kWhu 0.86 1.63Dew point temperature (based to lambdaof 1.2 and 50% humidity)

°C 47.0 56.3

Efficiency comparison with oil

Low temperature boiler

Condensingboiler

Hea

t val

ue 1

0 kW

h/l

Cal

orif

ic v

alue

10,

6 kW

h/l Losses over

water vapour

Heat losses(flue gas,

Radiation )

Energy usefor heating

94 %NT 75/60°C

Profit fromwater vapour

Heat gain from flue gas Pr

ofit

wit

h ca

lori

fic

valu

eca . 104 %

ca . 94 %

Losses

annual efficiency: 98 %

Annual energy consumption and outside temperature

(heating water temperature 75°C/60°C )

cum

ulat

ed y

earl

y en

ergy

con

sum

ptio

n[%

]

0

10

20

30

40

50

60

70

80

90

100

-15-10-505101520

Outside temperature [°C]

Hea

ter

wat

er te

mpe

ratu

re [°

C]

60

100

0

80

40

20

Heating advance

Dew point temperature HEL

Cumulated yearly energy consumption

Heating returnRange calorific value use

40/ 30°C up to 105,5 % 70/ 50°C up to 102,5 %

Emissions

Oil condensing boiler Permitted

maximum in Austria

Heizbösch Buderus Viessmann Hoval Oil boiler 4-350 kW

CO 5.2 5.6 6 1.8 20 NOx 32 25.3 31 27 35 OGC < 1 < 1 < 1 < 1 6 Soot 0 0 0.1 0 1

SO2 (1,000 ppm) < 50 no regulation SO2 (50 ppm) < 2,5 no regulation

A DCB

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

Kondensat

heater heat advance

heat return

Abgas

Brenner

Kessel

35°C

55 °C

45 °C

25 °C

90 °C

NeutralisationsboxKanal

Kondensat

heater heat advance

heat return

flue gas

burner

boiler

35°C

55 °C

45 °C

25 °C

90 °C

Neutralisation- box

canal

heat exchanger

oil - condensing boiler with larger heat exchanger

oil condensing boiler with pots(7-12 kW, 14-16 kW)

Fuel gasCombustion air

Sound-absorbing ceiling

burner(air blast burner)

Control unit

Heat exchanger and pots

Fire box

Advice heating water

Return heating water

1100°C

50°C

Pots with holes

Wall mounted oil condensing boiler(12,9/19,3 kW; 16,1/23,5 kW)

Return heatingwater

Two step burner

Fuel gas - Sound-absorbing ceiling

Oil pumpe

Circulation pump

Fire box

system of heat transfer

flue gas

1,100°C

40°C

Dew point temperature

temperature of the flue gas

Crack 0,8 mm

Gap

leng

hSquare end spiral spring

Place of the fire box

Modulating oil burner(4,7 - 10,9 kW / 5,7 - 14,0 kW

blast motor

Fresh air

Oil pipe to thepump

Flame holder

Rough mix area

Economy and Future Outlook

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

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)

Folder for enduser (edition: 9.000)

Oil condensing boiler brochurefor opinion leader

for decision maker

language: German

technical background

32 pages

download version: December 2003

sponsor: OMV

W i e n , O kt o b er 20 0 3

I m Au ft r a g d er OM V AG

Market overview (11 companies, 47 boilers )

Firma Viessmann Heizbösch ROTEX Heating Systems

GmbH Hoval Ges.mbH.Olymp Vertrieb- u. Service

GmbH

Adresse in Österreich

Viessmann Ges.m.b.H Lerschstraße 11

A-4602 Wels

heizbösch Walter Bösch KG

Grüttstraße 11

Friedrich Hofer Lindenweg 7, A-4081

HartkirchenHovalstrasse 11, A-

4614 MarchtrenkOlympstrasse 10

A-6430 Ötztal-Bahnhof

ABBILDUNG per EMAIL bestellt vorhanden / ok per EMAIL bestellt per Email bestellt per EMAIL bestellt

Kesseldaten

Marke und Type Vitoplus 300 Superia SPX20-RA61 ROTEX A1BO20i MultiJet b-i (8) GBD2010 Olymp Super Max

Web-Infos: http://www.viessmann.at

http://www.heizboesch.at/HT/Produkte/Kompaktheizzentralen/SPX20/ind

ex.php http://www.rotex.de www.multijet.at http://www.olymp.at

Kesselnennwärmeleistung (kW) 12,9 / 19,3 21 (11-23) 20 (12 - 20) 7-10 16 - 22

Stand / Therme Wandtherme Standgerät Standgerät Standgerät Wand oder Stand

Technologie der BrennwertnutzungKondensation im Kessel (Inox-

Radial-Wärmetauscher) nachgeschalteter WärmetauscherKondensation in Kessel und

Abgassystem Kondensation im Kesselnachgeschalteter Wärmetauscher

Gerätepreis inkl. Steuerung (inkl. 20 % MWSt) 6.199,20 € 5.892,00 € 5.397,60 € € 5.640 (inkl. MWSt) 5.532,15 €

Wasserinhalt (Liter) 16 Liter 16 Liter 5 Liter 35 Liter 25 LiterUmweltdatenNormnutzungsgrad (50/30°C) bis 104 % 103,5% 103,8% 104,8% (40/30°C) FEHLTNormnutzungsgrad (80/60°C) FEHLT 99,8% 101,4% 102,1% (75/60°C) FEHLT

maximale Abgastemperatur °C 67 (bei 60 °C Rücklauftemp.) 105 105 47°C (bei 40/30°C) 110

Erstzulassung (Datum) FEHLT Jahr 4/2003 Jahr 2001 FEHLT Sept. 2001

zulässiger Schwefelgehalt 500 ppm 1000 ppm

50 ppm 350 ppm 1000 ppm< 350 ppm < 1000 ppm50-1000 ppm

Brenner

Brennerbauart Öl-Gebläseblaubrenner Low Nox Brenner NC4LX Blaubrenner BL20LN-Blaubrenner (Druckluftzerst.)

Soft Start Blaubrenner, Olymp SilentStar 1.12A

LN Druckzerstäuberbrenner

Stufenbrenner 2 stufig 2 stufig 1 stufig 1 stufig 2-stufig (Anfahrstufe)

Neutralisation

Zubehör (n. erf. bei HEL mit S < 50 ppm)

Zubehör (n. erf. bei HEL mit S < 50 ppm)

Zubehör (n. erf. bei HEL mit S < 50 ppm) integriert integriert bauseits extern

Maße und GewichtKesselhöhe (mm) 900 1025 1100 1534 mm 1720

Kesselbreite (mm) 500 600 625 480 mm 776

Kesseltiefe (mm) 406 600 720 480 mm 553

Kesselnettogewicht (kg) 81 120 81 107 kg 160

Stromverbrauch Stand By FEHLT FEHLT 4 Watt FEHLT FEHLT

Stromverbrauch Normalbetrieb FEHLT FEHLT 69 Watt FEHLT FEHLT

„If somebody is installing an oil boiler, it should be an oil condensing boiler.“

More information: http://www.eva.ac.at/(de)/projekte/oil.htm

Thank you for your attention !