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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 !