It had to do with the surface area of the propane in the tank, temperature
and the amount of gas available at different temps. Even for a modest
generator you need a large tank to be able to give you enough vapor at low
temps.
This site has most of the info.
https://countryplans.com/smf/index.php?topic=10186.0
You can always parallel the small cylinders.
Best Regards,
Chuck McCown
McCown Technology Corporation
8401 N Commerce Dr
Lake Point, Utah 84074
801-250-9503 Office
435-830-4306 Cell
www.mccowntech.com
www.microtrench.pro
www.terabitnetworks.com
-----Original Message-----
From: Nate Burke
Sent: Thursday, December 5, 2024 9:12 AM
To: AnimalFarm Microwave Users Group
Subject: [AFMUG] Propane and Low temps
Many years ago, I think Chuck had posted an excellent chart showing
Propane tank sizes, and the offgas rate at different temperatures, but I
can't find it anymore, and my Google results don't show what I think it was.
We have several 2000-2500w Champion Dual-Fuel Generators that have been
working flawlessly for us with propane. Last night was the first time I
think that I deployed one in Cold temperatures though. We were about 13
degrees last night. I have it on a 30# tank, and it fired right up, and
ran for about 5 minutes, then turned off. Fired it up again, and it ran
for 2 hours and shut off. Propane tank was nearly full, but I'm
wondering if it was too cold for the propane. Back-of-the-napkin math
says that possibly it was. Working out some numbers based on run
times@60F, it looks like it might draw about 14kbtu/hr At 10 degrees,
it looks like a 30# tank will only do about 13kbtu/hr. Would a heater
blanket work And/or provide enough heat to offset the lower
temperatures? Or just stick with Gas for the winter. We're warming up
now, so won't be able to test until it gets cold again.
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