015 6:48 PM
To: RE-wrenches@lists.RE-wrenches.org
Subject: [RE-wrenches] Gen preheat in cold climates
Wrenches,
I'm curious what strategies you use to preheat a propane gen in cold climates.
This is a large off-grid design in a sub-zero winter climate and ideal would be
to turn on a block
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-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Benn Kilburn
Sent: Friday, April 03, 2015 2:23 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Gen preheat in cold climates
H
Foxfire Energy Corp.
Renewable Energy Systems
(802)-483-2564
www.Foxfire-Energy.com
NABCEP #092907-44
Original Message ----
Subject: Re: [RE-wrenches] Gen preheat in
We have installed many low ambient temp propane genset and here are a few
suggestions. I would recommend underground 1k propane tank this allows
constant 50* temp improves the evap rate of liquid propane and prevents fuel
starvation /lean burn conditions due to low evap rates. Primary reg set f
Hi Dana,
I have an off-grid client (central/northern Alberta) who tried this but the
heat from the gen would shut down the magnum inverter due to over temp. This
was in an enclosed room (~15'x15') in a much larger shop.
The gen was being exhausted outside but it was an air-cooled unit, so blew
Chris,
After I hit the send button, I thought about how a small generator or
gas grill will use tank pressure through a vapor regulator. If this
generator is plumbed that way, there lies a problem that your solution
of heating the tank will work with. Personally I would not plumb a
generator
Hi Chris,
LP will boil (vaporize) at -44° so until your ambient temperature is
below that it is vaporizing. Heating the tank will increase the liquid
and vapor pressure in the tank but it is still liquid, not vapor, that
is plumbed to a cold regulator, or vaporizer if they have one, where the
E-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of jay peltz
Sent: Friday, April 03, 2015 11:45 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Gen preheat in cold climates
Hi guys,
I don't live in super cold.
I'm curious about the block heater part. With the good syntheti
You may want to contact the gen set manufacture to see if the genny can go
cold "freeze protection" at sub zero because it may be required to operate
24/7in that condition. you may be able to install a thermostat to control
the block heater, this way its not always on. PS I would use the Outback
Hi guys,
I don't live in super cold.
I'm curious about the block heater part. With the good synthetic oils that are
thin at really cold
Is the issue heating the block or battery or heating the intake for propane
units?
Thanks
Jay
Peltz power
> On Apr 3, 2015, at 8:21 AM, James Jefferson J
At our high elevation installs the generator gets installed indoors with the
balance of the offgrid system we utilize the heat for the room
Dana Orzel 208.721.7003
Encourage Free Thinking Self Responsible Free Range Children
On Apr 2, 2015, at 8:47 PM, Gary Higbee wrote:
Wrenches,
I'm curio
Heating the regulator won't help if the propane is not vapourizing. You
would need to heat the tank.
However, you do not need to heat it very much, just enough to let it
vapourize. Think about putting it somewhere with a little heat, or burying
it.
On Fri, Apr 3, 2015 at 1:51 PM, Larry wrote:
>
About the carb heat idea...LP is a liquid at -44°F. The liquid does not
combust, it must be vaporized. As the ambient temperature drops closer
to the LP liquid temperature, there would be a reduction in how fast
liquid is vaporizing and therefor a reduction in volume. What you need
in cold weat
Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject: Re: [RE-wrenches] Gen preheat in cold climates
From: drake.chamber...@redwoodalliance.org
Date: Fri, April 03, 2015 10:32 am
To: "RE-wrenches" <re-wren
ergy.comNABCEP #092907-44
Original Message ----
Subject: Re: [RE-wrenches] Gen preheat in cold climates
From: James Jefferson Jarvis <j...@aprsworld.com>
Date: Fri, April 03, 2015 11:21 am
To: re-wrenches@lists.re-wrenches.org
On 4/3/2015 9:32 AM, drake.chamber...@redwoodalliance.org
On 4/3/2015 9:32 AM, drake.chamber...@redwoodalliance.org wrote:
We are dealing with a generator that absolutely won't start when cold, so
I was considering a block heater. Below 20 deg F it has proven worthless,
and we can see -20 F on occasion.
I had a generator like that. Below zero it would
We are dealing with a generator that absolutely won't start when cold, so
I was considering a block heater. Below 20 deg F it has proven worthless,
and we can see -20 F on occasion.
My concern is using power from a low battery on a cold cloudy day to heat
a generator. How long does it take to make
Gary,
Mac's approach is intelligent and will work well, as an automated
system with the right hardware. We took a quite different approach
on a somewhat similar scenario in 2009.
This was a Kohler 8.5REZ, with the electric carb heater and AC
charter for the start
Hi Gary,
We have implemented a preheat strategy that has really worked well at a
site using dual sunny islands. They have a load shed function built in
with the control relays. We are using that function to add the block
heater load. When a generator start is likely (~50% SOC) it triggers a
rel
Wrenches,
I'm curious what strategies you use to preheat a propane gen in cold climates.
This is a large off-grid design in a sub-zero winter climate and ideal would be
to turn on a block heater an hour or two in advance, then run the gen cycle. We
plan to use either a Schneider XW or Outback R
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