Yes but the electrical energy is converted to heat with practically
100% eff regardless of it's source of generation which is what I
meant. You are right of course, electrical generation is not without
it's environmental impact, even hydro. But what of your emissions from
burning??
J
Hakan Falk wrote:
Joe,
Electricity more efficient for heating? A lot of the electricity
production is using oil, with around 35% efficiency to make the
electricity. Heating with oil have 70 to 85% efficiency in burners. I
would not give anything for this manual, the author lacks knowledge
and understanding. A pity that it is a women who wrote it, because
now I am going to be accused of being a male chauvinist. It does
however not effect the fact that it is much more efficient to heat
with oil, than with electricity.
Hakan
At 15:16 27/04/2006, you wrote:
Getting it really cold means removing heat. Whether you remove heat
or add heat it takes time and energy. Adding heat would be a more
efficient process unless you live in the arctic and can let good old
mother nature do the work for you. BTW someone recently passed me a
manual written by a woman who shall remain nameless that is for sale
about making biodiesel. It says that heating oil for dewatering is
a very inefficient process. An electrical resistance heater is as
close to 100 percent efficient as anything I can imagine. Just be
careful about heat density. Too much power confined to too small an
area will degrade the oil at the heater surface. Better to use
several low density heaters to speed things up.
Joe
Jason & Katie wrote:
what about applejack style dewatering? get it REALLY cold so the oil
solidifies, or the water freezes, whichever comes first and screen it out?
thats how the old folks used to make apple whiskey for hard cider when my
grandma was a kid.
----- Original Message -----
From: "Ryan Pope" <mailto:[EMAIL PROTECTED]><[EMAIL PROTECTED]>
To: <mailto:biofuel@sustainablelists.org><biofuel@sustainablelists.org>
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separation: coalescer media
I'm trying to think of alternate ways to reduce/eliminate water in WVO
that are both easy (i.e. passive) and don't involve the energy use of
heating a bulk volume of oil to near water BP.
Coalescing media comes to mind, has anybody every looked into this
further or heard of its use in biodiesel production? All I see on JtF is
variations on heating and settling.
If you aren't familiar with coalescer media, it works because as the
oil-water mix is passed though the media, the small suspended drops of
water
tend to group together into larger and larger drops of free water that
will
then separate by gravity on the downstream side of the media.
An example video can be seen at
<http://www.kaydonfiltration.com/tech_video.htm>http://www.kaydonfiltration.com/tech_video.htm
Not sure on cost of the bulk media yet.
Thanks,
Ryan Pope
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