Where does the propane go?
Ol biscuit and I disagreed on whether or not is was possible for there to be air in a propane system basically with the tank valve shut and all the appliances turned off(valves shut). He said impossi...
Forum Discussion
Fascinating discussion, folks!
"Until sufficient flow is established the air/fuel ratio is 'air rich'
Propane is there just not rich enough for amount of available air to make fire"
This makes sense. The system must leak - propane out, air in. When the pressures are nearly equal, molecules can migrate both ways simultaneously.
I'm also interested in the comment about systems not leaking much in the past. My low end MH does not have any electronic valves (the propane stove works when there is no electricity) but it still has the delay before the stove burner will ignite after not being used for a while. Could it be that the propane system is now deliberately designed to leak outside the house on concern that a regulator failure or leak could cause too high pressure on the low side - at the appliances? Perhaps the deliberate leak is a safety feature of the regulator. I know my regulator area sometimes has a faint smell of propane that I cannot detect by means of detergent bubbles. If so, no wonder the propane bottle enclosure must be ventilated.
"Until sufficient flow is established the air/fuel ratio is 'air rich'
Propane is there just not rich enough for amount of available air to make fire"
This makes sense. The system must leak - propane out, air in. When the pressures are nearly equal, molecules can migrate both ways simultaneously.
I'm also interested in the comment about systems not leaking much in the past. My low end MH does not have any electronic valves (the propane stove works when there is no electricity) but it still has the delay before the stove burner will ignite after not being used for a while. Could it be that the propane system is now deliberately designed to leak outside the house on concern that a regulator failure or leak could cause too high pressure on the low side - at the appliances? Perhaps the deliberate leak is a safety feature of the regulator. I know my regulator area sometimes has a faint smell of propane that I cannot detect by means of detergent bubbles. If so, no wonder the propane bottle enclosure must be ventilated.
