rabbiofberlin-
Till you solve for me the question of how the gas gets ignited, I can assume that it is one fire.
.
The below diagram is the view from the side of a burner and pilot.
The burner has not been turned on.
___________
| | | | / <--(a)
_____________________ | |
(F) (T) > <--(b)|
/ _____________________ >_______|
/(P)
/
/
Keys:
1) The burner is turned on. Gas fills the burner, and escapes thru the holes on top and on the side.
G_G_G_G_G_G
| | | | /
_____________________ | |
(F) GGGGGG> GGGGG |
/ _____________________ >_______|
/(P)
/
/
2) Gas continues to flow thru the holes on top and on the side. The gas flowing from the side travels down the tube and ignites on the pilot light.
G_G_G_G_G_G
| | | | /
_____________________ | |
(F)FFFFGGGGGGGGGGGGGGGGGGGGGGGGG> GGGGG |
/ _____________________ >_______|
/(P)
/
/
3) Since the gas in the tube is being consumes faster than the burner is filling the tube with gas, the flare retreats down the tube toward the burner. Note, there are now two separate flames.
G_G_G_G_G_G
| | | | /
_____________________ | |
(F) FFFGGGG> GGGGG |
/ _____________________ >_______|
/(P)
/
/
F_F_F_F_F_F
| | | | /
_____________________ | |
(F) F> GGGGG |
/ _____________________ >_______|
/(P)
/
/
Gas expansion, if any, is minimal.
Yes, exactly.
Unless you accept the fact that the gas in the burners expands and gets ignited during its travel through the pipelet, with the lit gas then returning to the burners, you will have to explain to me how the gas in the burners get ignited.
Also, once the gas is ignited, how does it suddenly stop being a fire in the pipelet?