PB Heat DE manual Natural Gas

GAS PIPING

Table 5.1:	Natural Gas
Model		Input	Input
		(Cubic Ft/Hr)	(Cubic Meter/Hr)
DE-03		70	2.0
DE-04		105	3.0
DE-05		140	4.0
DE-06		165	4.7

Based on 1000 Btu/Cubic Ft.

Table 5.2:	LP Gas
Model		Input	Input
		(Cubic Ft/Hr)	(Cubic Meter/Hr)
DE-03		28	0.8
DE-04		42	1.2
DE-05		56	1.6
DE-06		66	1.9

Based on 2500 Btu/Cubic Ft.

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.

Pipe	³⁄₄″	1″	1¹⁄₄″	1¹⁄₂″
Length in
Feet	Pipe	Pipe	Pipe	Pipe
[Meters]
10 [3.0]	278 [7.9]	520 [14.7]	1050 [29.7]	1600 [45.3]
20 [6.1]	190 [5.4]	350 [9.9]	730 [20.7]	1100[ 31.1]
30 [9.1]	152 [4.3]	285 [8.1]	590 [16.7]	890 [25.2]
40 [12.2]	130 [3.7]	245 [6.9]	500 [14.2]	760 [21.5]
50 [15.2]	115 [3.3]	215 [6.1]	440 [12.5]	670 [19.0]
60 [18.3]	105 [3.0]	195 [5.5]	400 [11.3]	610 [17.3]

Maximum Capacity Correction Factors for Specific Gravity other than 0.60.

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

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