I do have some info on absorbance/emittance of various media, but not
easily at hand. I'll try to look it up.
What I recall is that flat black paint is about 80% absorbance, and
also 80% emittance. Not sure about the difference between different
types of black paint. The selective surfaces used
Really? I was under the impression 65% of the incoming solar radiation
was IR and NIR. Well I was thinking of putting flat black paint on
copper pipes and having a sun tracking parabolic mirror beneath them. I
was just wondering if anyone had any data on flat black paint types as
the last pos
Howdy Joe, don't stop with IR, you want to absorb all wavelengths- there
is more energy available in the visible/UV than the IR. Any flat black
material will absorb all wavelengths (not counting high energy stuff
like gamma rays). what you need is a material which not only absorbs,
but also co
Do you have any information on IR absorption of common black materials,
ie flat black paint types which are resonably good? I plan to do
something with it one day but would like to make something myself of
reasonable efficiency rather than buying a turnkey solution.
Joe
Hakan Falk wrote:
or 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
> > >
Joe,
In Israel you will see the same, but with efficient solar panels
built together with an insulated storage. It is however an enormous
difference in efficiency. The black cisterns have a very low
efficiency and you can only collect some warm water at the end of
sunny days. The main functio
ent 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
>
Almost every house and building has a big black cistern on the roof.
The are everywhere you look.
Joe
Hakan Falk wrote:
Joe,
Yes, but Mexico it is a bit larger and more people than Israel and in
total they do not have the same density, but last time was around 15
years ago and Israel t
t" , grandma frieburg
>never had a freezer, they left buckets of apple beer on the porch in the
>winter.
>- Original Message -
>From: Joe Street
>To: biofuel@sustainablelists.org
>Sent: Thursday, April 27, 2006 8:16 AM
>Subject: Re: [Biofuel] WVO-Water Separation: coale
: [Biofuel] WVO-Water Separation: coalescer media
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. B
Joe,
Yes, but Mexico it is a bit larger and more people than Israel and in
total they do not have the same density, but last time was around 15
years ago and Israel the last time was around 6 years ago, China 5
years and Brazil last time was only 2 years ago. Time goes very fast.
Still, I dou
t;>>>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, bec
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 t
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 wate
Hakan Falk wrote:
>Zeke,
>
>Solar thermal hot water is the cheapest and most efficient solar use,
>I do not understand that the use is so low. This except Israel, where
>you can see solar for hot water on almost every house. .
>
>
>
snip
Ever been to Mexico?
Joe
ter 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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel]
MAIL PROTECTED]>
To:
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 d
;
> 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 ki
reen 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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separation: coalescer media
I
r 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
> > > care
mall 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 REALL
Original Message -
From: "Ryan Pope" <[EMAIL PROTECTED]>
To:
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. passiv
ding 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
g? 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]>&
difies, 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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 P
hichever 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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separatio
, 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 B
p.
>
> 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
y. 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 wrot
used to make apple whiskey for hard cider when my
grandma was a kid.
- Original Message -
From: "Ryan Pope" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separation: coalescer media
I&
gt;>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 th
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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separation: coalescer media
r 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]>
>
reen 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" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, April 26, 2006 12:19 PM
Subject: [Biofuel] WVO-Water Separation: coalescer media
That could cetainly work it a Wisconsin winter...the cold is free!
Ryan
From: "Jason & Katie" <[EMAIL PROTECTED]>
Reply-To: biofuel@sustainablelists.org
To:
Subject: Re: [Biofuel] WVO-Water Separation: coalescer media
Date: Wed, 26 Apr 2006 16:54:01 -0500
what a
t; <[EMAIL PROTECTED]>
To:
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
> h
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 biod
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