Uei-test-instruments KM940 Bedienungsanleitung PDF herunterladen (Seite 34)

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C. CALCULATION OF FUEL DATA

For any fuel not specified by Kane International the net calorific value, gross calorific value

and composition should be obtained from the fuel supplier.

The following fuel data has been calculated with reference to the efficiency calculation.

Example 1:

Chemical composition: C 25%

O 50%

net

8.35 MJ/kg

9.3 MJ/kg *

Max CO

20.4%

K1n = (255 x % carbon in fuel) / Q

net

(kJ/Kg)

= (255 x 25) / 8350 = 0.763

K1g = (255 x % carbon in fuel) / Q

(kJ/Kg)

= (255 x 25) / 9300 = 0.685

K2 = Max % CO

= 20.40

K3 = Wet Loss = [(9 x %H

+ %H

O) / 9300] x 2425

= [(9 x 3 + 50) / 9300] x 2425

= (77 / 9300) x 2425 = 20.08

K4 = 65 (an approximation for wood) *

The fuel values to program into the Analyser are as follows:

NATURAL GAS

K1g

K_2

K_4

: 0.763

: 20.4

: 65

K1n

K_3

O2r

: 0.685

: 20.08

: 8.0

* Assumed values in the absence of supplied data. See previous appendix for other fuels.

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