PB Heat DE - Manual (Page 19)

17
Table 5.3: Pipe Capacity
Capacity of pipe of different diameters and lengths in cubic feet per hour
[cubic meter per hour] with a pressure drop of 0.3 inches of water [75 kPa]
and a specific gravity of 0.60. No allowance for an ordinary number of
fittings is required.
Table 5.1: Natural Gas
Based on 1000 Btu/Cubic Ft.
Table 5.2: LP Gas
Based on 2500 Btu/Cubic Ft.
GAS PIPING
Model
Input
(Cubic Ft/Hr)
Input
(Cubic Meter/Hr)
DE-03
DE-04
DE-05
DE-06 70
105
140
165
2.0
3.0
4.0
4.7
Model
Input
(Cubic Ft/Hr)
Input
(Cubic Meter/Hr)
DE-03
DE-04
DE-05
DE-06 28
42
56
66 0.8
1.2
1.6
1.9
Pipe
Length in
Feet
[Meters]
³⁄₄″″
Pipe
1 ″″
Pipe
1 ¹⁄₄″″
Pipe
1 ¹⁄₂″″
Pipe
10 [3.0]
20 [6.1]
30 [9.1]
40 [12.2]
50 [15.2]
60 [18.3]
278 [7.9]
190 [5.4]
152 [4.3]
130 [3.7]
115 [3.3]
105 [3.0] 520 [14.7]
350 [9.9]
285 [8.1]
245 [6.9]
215 [6.1]
195 [5.5]
1050 [29.7]
730 [20.7]
590 [16.7]
500 [14.2]
440 [12.5]
400 [11.3]
1600 [45.3]
1100[ 31.1]
890 [25.2]
760 [21.5]
670 [19.0]
610 [17.3]
Specific Gravity 0.50 0.55 0.60 0.65 0.70 0.75
Correction Factor 1.10 1.04 1.00 0.96 0.93 0.90
Specific Gravity 0.80 0.85 0.90 1.00 1.10 1.20
Correction Factor 0.87 0.84 0.82 0.78 0.74 0.71
Specific Gravity 1.30 1.40 1.50 1.60 1.70 1.80
Correction Factor 0.68 0.66 0.63 0.61 0.59 0.58
Maximum Capacity Correction Factors for
Specific Gravity other than 0.60.