Expert report

Study of efficiency and exhaust gasemission with small
size boiler assembled with CCR NOCO-reactor.

Elaborated:
Ph. D. Attila Meggyes

Budapest, 6-th August 1996.


1./ Introduction.

Mr Allan Inovius President of the CCB /Complete Combustion BureauSweden/Hungary AB/ asked us for the studding effect CCR NOCO-reactordeveloped and invented by them on the efficiency and exhaust gasemission of small size boiler.

2.1 Data of the boiler under measurement and the measureddata.

The measured boiler:

CCR NOCO EUROPE BOILER
Number 1
Maker: FÛTÔBER; Nagybátony.

Oil burner:

OIL N 10 B
Maker: GB GANZ; Budapest

CCR NOCO-reactor:

Type 240/2

Nozzle of oil atomiser:

0.5 G/h 60° H

Annex I. contains the measuring points on thedevice and the result of them.

3./ Results of calculations.

The calculated characters based on the measured results:


Indirect efficiency:

ind.= 93,35 %

Exhaust gas losses

= 5,35 %

Losses of radiation and heat transfer

= 1,3 %

Losses of unburned fuel

= 0 %

Direct efficiency:

dir.= 92,7 %

Heat flux of the input fuel

= 17479,3 W

Heat flux of the input air

= 163,351 W

Effective head flux of water

= 16347,9 W

Emission values related to 3% 02

NOx

= 91,32 ppm

NO

= 88,31 ppm

CO

= 22,38 ppm

Soot

Å 0 mg/m3

CO2 =

CO2max.

=

15,8
1,17

= 13,51 %

NO/NOx ratio andNO2/NOx ratio

NO
NOx

= 96,7 %

NO2
NOx

= 3,3 %

Excess air coefficients

=

20,9
20,9 - O2

= 1,1754 -

The above values are calculated on average.

4./ Summary, conclusions

Following statements can be taken for the small size boilerprovided with CCR NOCO-reactor based on the measured result and thecalculation.

1./ Both direct and the indirect boiler efficiencies are veryadvantages /more then 92 %/ that can be realised primary by the lowexhaust gas temperature.

2./ The CO emission and the soot emission are also of veryadvantages.

3./ The air excess change /O2 content/ is of loweradvantages in the area of fluctuation. At a given adjustment theO2 emission was between 2,92/3,4 V%.

4./ We propose -to achieve lower air excess /without COrespectively soot emission increase/ and the decrease the air excessfluctuation- further development for the adaptation of the burnerwith CCR NOCO-reactor respectively the complementation of CCR NOCO-reactorwith deflector.


Ph.D. Attila Meggyes
Candidate of Sciences
Dip. N°: 8116/79
Associate professor
Technical University of Budapest

I. Annex.

Ambient air:

temperature:

ta

= 22,98 °C

pressure:

pa

= 101*103 Pa

humidity:

= 70 %

Water:

inlet temp.:

twi

= 21,2 °C

outlet temp.:

tWO

= 54,25 °C

mass flow:

mv

= 0,1173 kg/sec

Fuel:

pressure:

pf

= 7 bar

temperature:

tf

= 20,5 °C

mass flow:

mf

= 1,4964 kg/h

spec. heat value:

Hi

= 42000 kJ/kg

Exhaust gas:

temperature:

texh

= 120,0 °C

Measured exhaust gas components:

min./max.

NOx

= 90,09 ppm

88,53/92,09

NO

= 87,13 ppm

81,53/92,09

CO

= 22,08 ppm

13,61/64,67

O2

= 3,12 V%

2,92/3,4

R

= 0 mg/m3

NO2 = NOx - NO

= 2,96 ppm

The above values are average values in stationary condition.
Place of the measuring points are on Fig. 1.
The boiler was not connected to chimney.

1. fig.: The test rig

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