Condensate Pipe Lines - Friction Resistance Imperial Units

Friction or major resistance in condensate pipe lines.

Mass Flow of Condensate (lb/h)
1/2	100	240	290	350	430	460	520
3/4	230	560	680	820	990	1000	1200
1	440	1070	1200	1550	1800	2000	2260
1 1/4	950	2300	2700	3300	4000	4300	4800
1 1/2	1400	3500	4200	5500	6100	6600	7100
2	2800	6800	8100	9900	11800	12700	14200
2 1/2	5700	13800	16500	20000	23900	25700	28900
3	9000	21500	25800	31000	37000	39800	44700
4	18600	44000	52000	63400	75500	81000	90900

Example - Sizing Condensate Pipe

For a steam distribution system with a running load of 2000 lb/h - the startup condensate load is doubled to 4000 lb/h.

Using the 10 inch H₂O column - a 1 1/2 inch pipe is acceptable.

Related Documents

Condensate Generated in Cold Steam Pipes - SI Units - Huge amounts of condensate are generated when cold steam pipes are heated up must be drained from the pipes.
Condensate Generated in Cold Steam Pipes - Sizing of Steam Traps - When cold steam pipes are heated up they generate huge amounts of condensate that must be drained away from the pipe through steam traps - in Imperial Units.
Condensate Pipe Lines - Capacities (kW) - Maximum capacities for condensate pipe lines in kW steam consumption.
Condensate Pipe Lines - Sizing - Flow and pressure loss in condensate return lines - SI Units.
Condensate Pipes - Flash Steam Generated - Calculate flash steam generation in condensate pipe lines.
Condensate Pumping - High temperatures and danger of impeller cavitation is the major challenge for condensate pumping in steam systems.
Gravity Return Condensate Pipes - Capacities - Max. capacities (lb/hour) in gravity condensate return lines.
Insulated Steam Pipes - Condensate Generated - Heat loss from steam pipes generates condensate which must be drained from the system - imperial units.
Insulated Steam Pipes - Condensate Generated (kg/h per 100m) - Heat loss from steam pipes generates condensate which must be drained from the system.
Steam Pipes - Installation of Drip Legs - Properly draining steam pipes for condensate.
Steam Tracing of Pipe Lines - Steam tracing of pipe lines can be done to maintain appropriate product temperatures.

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Condensate Pipe Lines - Friction Resistance Imperial Units

Friction or major resistance in condensate pipe lines.

Example - Sizing Condensate Pipe

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Scientific Online Calculator

Mass Flow of Condensate (lb/h)
Pipe Size (inch)	Frictional Resistance - Major loss (inches H₂O per 100 ft of pipe)
Pipe Size (inch)	1	5	7	10	14	16	20
1/2	100	240	290	350	430	460	520
3/4	230	560	680	820	990	1000	1200
1	440	1070	1200	1550	1800	2000	2260
1 1/4	950	2300	2700	3300	4000	4300	4800
1 1/2	1400	3500	4200	5500	6100	6600	7100
2	2800	6800	8100	9900	11800	12700	14200
2 1/2	5700	13800	16500	20000	23900	25700	28900
3	9000	21500	25800	31000	37000	39800	44700
4	18600	44000	52000	63400	75500	81000	90900