Report No.: 300-ELAB-2526-EPA Rev4 110821
Date:
11.08.2021
Initials:
JSA/
Page
40 of 49
300-ELAB-2526-EPA Rev4 110821
Internal correction of gasmeters
The Vögtlin Red-Y gasmeters have internal correction to as well normal temperature (here 0-degree C)
and to pressure (here 1013 hPa)
Consequently, in the calculations, the gasmeter temperature and pressure is entered as 0 degr C
respectively 1013 hPa.
1013 Hectopascal (hPa) equals 14,69 psi or 10329,7 mm water column.
Unitary DTI Cribwood and Cordwood spreadsheet
The spreadsheet used for calculation of the emissions is a unitary Cribwood and Cordwood spreadsheet, in
so far as the particle emission calculation is identical for Cribwood and Cordwood. When used for a
Cordwood test there are some void spaces under the cribs and spacers calculations in the beginning. Also,
generally the fuel is referred to as ‘Cribs’ even though for good reasons, for Cordwood,
wood logs are
used.
Request of restriction of the air valve action
The action of the air valve must be restricted by means of a physical stop as to prevent use of the stove at
any valve setting lower than the one used during the Low Fire test, here 3 quarters of a revolution open.
Duplicated High fire calculations
As well for the ASTM calculations as for the CSA calculations we have performed double calculations. One
which applies for the HF part alone, to return the burn rate and another for the combined CS + HF part
tests, to return the particle emission. On each of the duplicate HF result sheet, the invalid result sections
are blanked out with a red bar.
For some of the burn rate calculations, there is a minor still insignificant deviation from the (true) ASTM
calculation to the CSA calculation.
For the Low fire test, the true burn rate is 0,6145 (rounded to 0,61) kg dry matter per hour. CSA suggests
0,62 kg dry matter per hour
For the HF3 test, the true burn rate is 2,3256 (rounded to 2,33) kg dry matter per hour. CSA suggests
2,34 kg dry matter per hour
The deviating results are attributed to different rounding and number of decimal places, metric conversion
factors in combination with direct test run timekeeping for ASTM calculation, but derived or truncated test
run timekeeping for the CSA calculation to the nearest sampling time in a 30 seconds interval.
Содержание 2B Classic 2020
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