HearthStone WFP-75 8411 Manuel D'installation Et D'utilisation page 112

Report prepared for Guillaume Thibodeau-Fortin (Stove Builder International Inc.) on
6/8/2020 7:48:41 AM
103704002MTL-001 TEST REPORT REV 4
TEST REPORT FOR STOVE BUILDER INTERNATIONAL INC.
Report No.: 103704002MTL-001
Date: 11/16/18
W
The air flow velocity shall be calculated as follows:
where
V
F
P
C
P
34.97 = Pitot tube constant
ΔP
T
28.56 = molecular weight of air
P
Baro
P
s
The mass flow rate shall be calculated as follows:
where:
m
V
3600
A
p
The rate of heat release into the circulating air shall be calculated using the air flow and change
in enthalpy, as follows:
Where:
Δe
Δh
m
The heat output over any time interval shall be calculated as the sum of the heat released over
each measurement time interval, as follows:
Version: 05/10/17
Stove Builder International Inc. | 46345 | Rev: Apr 13 2020 12:33PM | Uncontrolled Copy
= duct width, m
V = F x C x 34.97 x √T/28.56(P
p p
= velocity, m/s
= Pitot tube calibration factor determined from vane anemometer measurements
= Pitot factor
= 0.99 for a standard Pitot tube or as determined by calibration for a Type S Pitot tube
Note: The Pitot tube constant is determined on the basis of the following units:
m/s[g/g mole (mm Hg)/(K)(mm H
= velocity pressure, mm H2O
= temperature, K
= barometric pressure, mm Hg
= duct static pressure, mm Hg
m = 3600VAp
= mass flow rate, kg/h
= air flow velocity, m/s
= number of seconds per hour
= duct cross-sectional area, m2
= density of air at standard temperature and pressure (use 1.204 kg/m3)
Δe = Δh × m
= rate of heat release into the circulating air, kJ/h
= change in enthalpy of the circulating air, kJ/kg
= mass air flow rate, kg/h
(15 OF 21)
+ P )
baro s
0.5
O)]
2
Page 15 of 21
1829, 32nd Avenue
Lachine, Que,H8T 3J1
Telephone: 514-631-3100
Facsimile: 514-631-1133
www.intertek.com/building
GFT-OP-10c
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