propane preheater

-----Original Message-----
From: Stan Prevost ]
Posted At: Friday, December 22, 2006 10:35 PM
Posted To: rec.aviation.owning
Conversation: propane preheater
Subject: propane preheater

If this is blowing the warm combustion gases into the cabin, plenty of
drawback. The combustion products are primarily carbon dioxide and
water
vapor. Lots of water vapor. The moisture can fog all the windows, or
create frost on the inside of the windows if it is below freezing. OK
on
the engine, bad in the cabin.


"dave" wrote in message
. ..
Another thread made me think about using the portable propane heater
I
use
in my garage to preheat my airplane. It's the standard metal tube
type
with the fan from Home Depot or Lowes. I've seen people simply
attach
a
flex duct to the end of this type heater and blow the hot air into
the
cabin - poor man's red dragon. Any drawbacks?
Thanks
Dave

It may also render your CO detector completely useless. Aren't the
combustion products are CO and H2O, not CO2 and H2O?

It may also render your CO detector completely useless. Aren't the
combustion products are CO and H2O, not CO2 and H2O?


Complete combustion results in only C02 and H20.

Incomplete combustion, such as that in an (relatively) oxygen starved
environment, results in the formation of CO (carbon monoxide).

The trick is knowing wether or not you are having complete combustion.
People have died as a result.

Dave

Dave S wrote:


The trick is knowing wether or not you are having complete combustion.
People have died as a result.

Those cheesy garage heaters generate CO. The instructions even warn
you not to use them in non vented spaces. I couldn't even use mine
in the garage with the door open without getting headaches.