- Joined
- Dec 6, 2009
- Messages
- 6,044
- Points
- 3,101
- City
- maplevalley WA
- Vehicle Year
- 1983
- Transmission
- Automatic
i remember being told before that when your building headers that all the runners should be the same length is there any truth to that or is it another wivestale?
I am just guessing here but being in air movement HVAC the pipes are not long enough to make much a difference it is the turns where you get the most turbulance (resistance) inside the pipes. In general a 90 degree angle adds about 5 feet of pipe for long turn and 10` for short turn. I think the key would be back pressure to equal out the static pressure in each pipe allowing the fuel to keep the valves and pistons from burning up. In refrigeration we use all long turn 90s and only allowed so many, air and gasses are a fluid measurement and when your working with 200 to 450 psi your moving alot of (cfm) cubic feet per minute. The back pressure will equal out the amount of pressure from each individual pipe. Of course I`m bored.