You probably don't have to heat the tank, but just the feed line from
the tank to the genny. Run it underground for added protection.
bp
<part15sbs{at}gmail{dot}com>
On 12/6/2024 6:09 AM, Chris Fabien wrote:
You can get tank heater blankets which might help keep your portable
unit running although will increase overall fuel usage.
We ran into the same issue when we were considering multiple 125gal
tanks to run a 50kw gas generator. The site didn't have room for a
large tank but 125gal are allowed to be placed alongside a building.
In talking with a few local propane suppliers, their knowledge level
varied considerably on specing a sufficient tank size for a large
generator in very cold conditions (we see down to -20F occasionally).
You can do buried propane tanks also which helps considerably by
having the ground as a heatsink, but very expensive and an ongoing
inspection cost.
Ultimately just had a larger natural gas service installed. Some risk
there of a gas outage but saves a LOT of cost and headache.
On Thu, Dec 5, 2024 at 11:14 AM Nate Burke <n...@blastcomm.com> wrote:
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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