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<pre class="moz-signature" cols="90">This reminds me of the hoopla about "Cold Fusion" 30 years ago. Gad, am I showing my age! :-( :-(
Joe
Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
<a class="moz-txt-link-abbreviated" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a>
<a class="moz-txt-link-freetext" href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
</pre>
<div class="moz-cite-prefix">On 7/20/2016 5:28 AM, Chris Jones
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">My
observations are that the air does heat up when compressed
then cooled when it decompresses. For example, if you have a
large take of compressed air used to fill a small tank, the
small tank heats up as it is filled and the large tank cools
off as it does the filling of the small tank.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That
would lead me to believe that, in the end, the air would be
roughly the same temperature after it went through the
compression then decompression as it traveled through the
bottles from outside to inside. The bottles might absorb
some of the heat from the compressed air and then you would
have a wall that is warmer than room. In the end, I don’t
believe there would be much change in temperature in the
room.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D">Christopher
Jones, P. Eng.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D">Rowan
Williams Davies & Irwin Inc.</span></b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br>
<i>Consulting Engineers & Scientists</i><br>
901 King Street West, Suite 400, Toronto, Ontario, M5V 3H5<br>
<b>T:</b> (519) 823-1311 ext 2052 <o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D">M:</span></b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D">
(416) 697-0056
<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
Equest-users
[<a class="moz-txt-link-freetext" href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Joe Huang via Equest-users<br>
<b>Sent:</b> Tuesday, July 19, 2016 8:54 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] How do you think
about the no electricity Eco-Coolers from Bangladesh<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>I saw today the same technology also promoted on the CIBSE
Bulletin Board even with a video "explaining" how it works
(the plastic bottles supposedly "compresses and cools the
air")<o:p></o:p></p>
<p>( <a moz-do-not-send="true"
href="https://www.linkedin.com/groups/75555/75555-6160367729091100672?midToken=AQF3zdCi1vKWLA&trk=eml-b2_anet_digest_of_digests-hero-8-view%7Ediscussion&trkEmail=eml-b2_anet_digest_of_digests-hero-8-view%7Ediscussion-null-bc6m0%7Eiqtrhngl%7Eh3">https://www.linkedin.com/groups/75555/75555-6160367729091100672?midToken=AQF3zdCi1vKWLA&trk=eml-b2_anet_digest_of_digests-hero-8-view%7Ediscussion&trkEmail=eml-b2_anet_digest_of_digests-hero-8-view%7Ediscussion-null-bc6m0%7Eiqtrhngl%7Eh3</a>
)<o:p></o:p></p>
<p>To me, this seems more like wishful thinking. My comment
posted on the CIBSE Bulletin Board was:<o:p></o:p></p>
<p><span class="text">I don't understand how this would work
from a thermodynamic point of view. There has to be some air
velocity to begin with, in which case I can see how the
bottles might channel the air flow resulting in higher air
velocities coming out of the bottle openings, but wouldn't
the total amount of air flow be the same, or less than
through the window opening with no obstruction? Also,
someone explain to me how compressing the air will cool it??
I've always thought that compressing the air would heat it
up, although in this case the effect would be extremely
minimal either way.</span><o:p></o:p></p>
<p><span class="text">Joe</span><o:p></o:p></p>
<pre>Joe Huang<o:p></o:p></pre>
<pre>White Box Technologies, Inc.<o:p></o:p></pre>
<pre>346 Rheem Blvd., Suite 205A<o:p></o:p></pre>
<pre>Moraga CA 94556<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:yjhuang@whiteboxtechnologies.com">yjhuang@whiteboxtechnologies.com</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://weather.whiteboxtechnologies.com">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data<o:p></o:p></pre>
<pre>(o) (925)388-0265<o:p></o:p></pre>
<pre>(c) (510)928-2683<o:p></o:p></pre>
<pre>"building energy simulations at your fingertips"<o:p></o:p></pre>
<div>
<p class="MsoNormal">On 7/14/2016 7:22 PM, <span
style="font-family:"MS Mincho"">
冷面寒</span><span
style="font-family:"PMingLiU","serif"">枪</span>
via Equest-users wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">Recently,I read the news about the zero
air cooler,<span
style="font-size:10.5pt;font-family:"Verdana","sans-serif";background:white">which
is made with re-purposed plastic bottles.And the new
claims that it helps reduce indoor temperature by 5
degrees centigrade.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif";background:white">The
making process is shown as following:</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif";background:white"><img
id="_x0000_i1025"
src="cid:part4.83B3A0FD.8467CC87@whiteboxtechnologies.com"
height="466" border="0" width="571"></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif";background:white"><img
id="_x0000_i1026"
src="cid:part5.96F16D3F.6681EA2F@whiteboxtechnologies.com"
height="359" border="0" width="592"></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I dout that very much.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">the Joule-Thomson Coefficient for air
(mostly nitrogen) at 300K (27°C/80°F) is about 0.36K/bar.
This means that at 300K a 1bar change in pressure equates
to a 0.22K. The change in pressure required to get the 5°C
(5K) reduction would therefore be:<span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#141414"><br>
<br>
<span style="background:#FCFCFF">5 / 0.22 = 22.7bar</span></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#141414;background:#FCFCFF"><img
id="_x0000_i1027"
src="cid:part6.DDF12ED6.1CA3CE67@whiteboxtechnologies.com"
height="477" border="0" width="740"></span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">So I think it is impossible the
temperature drop will be up to 5 degrees centigrade after
the air through the bottle.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">What do you think?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">------------------ <o:p></o:p></p>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><strong><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#3366FF">Yongqing
Zhao</span></strong><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><strong><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#006600">Changsha
Green Building & Energy Saving Technology
CO.,LTD</span></strong><b><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#006600"><br>
</span></b><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#3366FF">NO.438,Shaoshan
Road,Changsha,Hunan,China<br>
Telephone:13574805636</span><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#3366FF"><a
moz-do-not-send="true"
href="mailto:Email:zhaoyongqing1987@126.com">Email:zhaoyongqing1987@126.com</a></span><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana","sans-serif"">
<a moz-do-not-send="true"
href="mailto:503271081@qq.com">503271081@qq.com</a></span><span
style="font-size:10.5pt;font-family:"Verdana","sans-serif""> <o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
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