Plumber69
In the Trades
I just ran 60 feet of 1 1/4 gas line to a heater because 1" was shy of btu. Then only to realize the connection on the unit was 1". Im confused on running 1 1/4 would even benefit if the final connection was 1"
Yes, it would benefit.I just ran 60 feet of 1 1/4 gas line to a heater because 1" was shy of btu. Then only to realize the connection on the unit was 1". Im confused on running 1 1/4 would even benefit if the final connection was 1"
Friction loss is calculated as size over distance. Larger pipe over a given distance will have less friction loss.
EDIT: Volume moved (speed) is a third and important factor.
Friction loss is calculated as size over distance. Larger pipe over a given distance will have less friction loss.
EDIT: Volume moved (speed) is a third and important factor.
For the record, that's a power law, not an exponential law. In an exponential law the variable is in the exponent.The line friction increases exponentially with velocity . . . (since near-nothing to the nth-power is still near nothing)
What about fittings aren't they also considered for friction losses? What about materials use as Black steel would have more friction then plastic or copper does that also come into consideration?
For the record, that's a power law, not an exponential law. In an exponential law the variable is in the exponent.
Cheers, Wayne
Keep your day job.So basically if it was all 1 inch, it would start burning up most the gas in the last say 20 feet of pipe.
So basically if it was all 1 inch, it would start burning up most the gas in the last say 20 feet of pipe.
You still need to consider the origin of the gas source. That is the pipe size to the meter, and meter size. A 1.25" pipe will not provide more gas than what can flow through the meter. All you did is reduce back pressure (loss of pressure) for the 1.25" pipe section and it may save the day but you need to get the pressuresure readings at the meter and at the gas appliance to sort it out. How did you come up with "shy of BTU"? You might be able to ask the gas company the pressure in inches of water at the meter and what the meter can provide. At the meter it may be around 6".I just ran 60 feet of 1 1/4 gas line to a heater because 1" was shy of btu. Then only to realize the connection on the unit was 1". Im confused on running 1 1/4 would even benefit if the final connection was 1"
This is awkward, but...
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