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<p class=MsoNormal><span style='color:#1F497D'>David,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:#1F497D'>….You have
raised a good point in your message…..</span><span lang=EN-US
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> ¨</span><b><span
lang=EN-US style='font-size:14.0pt;font-family:"Times New Roman","serif";
color:red'>one would probably use ACR where there is no electricity, or where
there is an abundance of heat which would likely otherwise be wasted, etc.¨ </span></b><span
lang=EN-US style='font-family:"Times New Roman","serif";color:#1F497D'>I think
that it is an important issue to bear in mind. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman","serif";
color:#1F497D'>I do remember having in contact with a Swedish company, involved
in manufacturing domestic absorption refrigerators, and their main costumers
were UN funded projects to be developed in Africa where there was a need for
keeping their medication and food with the proper temperature for avoiding its
damaging. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman","serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'>Kindest regards.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'>Oscar.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Times New Roman","serif";
color:red'><br>
<br>
</span></b><span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>De:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'> Gasification
[mailto:gasification-bounces@lists.bioenergylists.org] <b>En nombre de </b>David
House<br>
<b>Enviado el:</b> viernes, 15 de ag</span><span lang=EN-US style='font-size:
10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>os</span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>to
de 2014 12:50<br>
<b>Para:</b> Discussion of biomass pyrolysis and gasification<br>
<b>Asunto:</b> Re: [Gasification] Gasification or Pyrolysis + Absorption
Chiller for Fruit<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<br>
<span style='font-family:"Helvetica","sans-serif"'>Friends,</span><o:p></o:p></p>
<div>
<p class=MsoNormal>On 8/14/2014 2:54 PM, Big Daddy wrote:<o:p></o:p></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><span style='color:#1F497D'>Gentlemen,</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>I live in the tropics (Puerto
Vallarta), and have a very keen desire to power a refrigeration system from
gas… I always assumed it would be some sort of ammonia refrigeration
system, or a super-big version of an RV fridge. Currently, I build charcoal
retorts and charcoal gasifiers… Just haven’t had time to dive into
the refrigeration sciences yet.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Additionally, there may be a way
to use “waste heat” from a retort vs. direct flame… I just don’t
have the numbers yet, but am very interested in this thread.</span><o:p></o:p></p>
</blockquote>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
I am ignorant in a vast array of subjects, including the fine points of the
physics of refrigeration. That gives a context for my saying that I have heard
that absorption cycle refrigerators (ACR)-- that is, those which are passive,
using only convection to pump fluids-- are far less efficient than technologies
which rely on active pumping and/or compressors. ACRs are often quoted as
having single digit efficiencies, and further that in general it is more
efficient to generate electricity and use that to power a refrigerator;
although of course YMMV. If this is the case, then whether the working fluid is
ammonia/water or some other, and again speaking generally, one would probably
use ACR where there is no electricity, or where there is an abundance of heat
which would likely otherwise be wasted, etc.<br>
<br>
Or use a better ACR. Interestingly, Albert Einstein shares a number of patents
directly and indirectly related to ACR technology with Leó Szilárd (another
physicist, noted as a science fiction writer), and some say that their
technologies offer better efficiencies. <br>
<br>
But the final fly in the soup is that few ACR refrigerators are still
manufactured, and as such while a discussion of the technology may be of
interest, few of us have the machine shop, the knowledge and the skill to
translate any of that into reality.<br>
<br>
<br>
<br>
d.<o:p></o:p></span></p>
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