The trailer I mentioned is not venting gasoline fumes from the tank but waste from a heating system.I have put in enough gas water heaters to know what a waste gas vent is.
Now why, in the summer, would you have waste gas fumes comming out of a trailer on a gas station lot....near the tanks.
The guy at the store said it was "something for the gas tanks" The trailer was installed when prices jumped over $1.50
Not all stations have the MPD's with all the electronic compensators or MPD's at all. There are still a lot of stations running Dispensers with mechanical computers.
Not all stations are doing this....
Geothermal H/C systems depend on the temp of the ground to work...gas stored in the below ground tank will cool.The ground is cooler than the air outside...that is why dogs will dig out a hole to lay in. Not much gas stays in the dispenser and is pumped out within the first gallon or so. So whatever gas is in the cabinet that was heated by the air will pass quickly and cooler gas should follow.
70 degrees was an estimate on the ground temp...but...the nozzle should not feel like bath water temp gas is flowing through it.
This fall/winter take notice and see if the nozzle is warm or cold.Even here in GA in the winter Normally you almost cannot hold the nozzle because of the cold.Last winter I did not notice this....
Last winter I started noticing this at several newer stations.
Do you get cold water or warm water when you turn on the cold side of your sink?
Water lines run long distances through the ground and do not absorb that kind of heat.
