<div dir="ltr">Paul: <br><br>Permit me to interject an observation. What Crispin calls "an expected working life" is an economic concept. <br><br>Beyond some testing for durability, operating instructions for maintenance and repairs, there is no fixed working life.<br><br>This is true of all physical investments - hydro plants to Trump Tower. Financiers need a fixed measure of "life" in order to compute a depreciation schedule, and so do regulators. Household durable goods do not fall in that category. I have a microwave that is 20+ years old, though a new one will pay for itself in convenience and energy efficiency within a year. Unregulated investments on a larger scale depend on newer technologies - some may render an old technology obsolete in 10 years, some in 50. <br><div class="gmail_extra"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><font face="georgia, serif"> <br></font>That Deganga stoves have finished four years of virtual daily usage and that sales rates are growing is, in my books, a confirmation of ground performance, whatever the efficiencies. <br><br>Two questions: a) has any customer bought a SECOND stove of the same kind? b) has anybody INCREASED stove use - larger families or reduction in purchased foods or cooking some food for sale? c) have you got any requests for larger stoves, including for commercial food preparers?<br><br>Higher utilization rates simply mean capital costs are spread out over more hours. Durability and O&M are always balanced against utilization rates. It doesn't matter what the "nameplate" capacity and lifetimes are; whether the stove is used is of utmost importance.THEN and only then can one figure out why efficiencies or emission rates are different - if so - and what do about them. <br><br>Waiting for pictures and more observations. I too agree with Crispin, "<span style="color:windowtext">Having one working example is always 10 times better than talking up the first one." I would say a thousand times; that is when the rubber meets the road, and all the unknowable wrinkles get straightened out. </span><br><br>Nikhil</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Nov 15, 2017 at 1:13 PM, Paul Anderson <span dir="ltr"><<a href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
Crispin,<br>
<br>
Sorry for the week's delay in responding. See below:<br>
<pre class="gmail-m_-8448467159597046486moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="gmail-m_-8448467159597046486moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a href="tel:(309)%20452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a class="gmail-m_-8448467159597046486moz-txt-link-abbreviated" href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
<div class="gmail-m_-8448467159597046486moz-cite-prefix">On 11/8/2017 8:42 PM, Crispin
Pemberton-Pigott wrote:<br>
</div>
<blockquote type="cite">
<div class="gmail-m_-8448467159597046486WordSection1">
<p class="MsoNormal"><span style="color:windowtext">Dear
Paul<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext">That is
very encouraging news about the project. I am happy to hear
sales are 3000 per month. Do you have an expected working
life for the stove? What parts fail first?</span></p>
</div>
</blockquote>
In the pilot project in Deganga, the earliest stoves have completed
over 4 years of virtually daily usage (with annual confirmations by
the carbon credit verifiers). This is with maintenance and
repairs. The major parts have many years of life ahead of them.
The repairs are on the grate and on the fuel chamber (innermost
cylinder). The project purchases the produced charcoal, so the
users are quite good at dumping out the char at the end of the
pyrolysis stage, thereby helping protect the grate and lower
sidewalls.<br>
<br>
The fuel cylinder has a "sacrificial cylinder" that is inside the
main wall of the fuel cylinder. When it is showing stress, it is
removed (one screw) and inverted so that the less-stressed upper
portion becomes the bottom area. I am asking the project
implementer (MB) about the frequency of the repair work. The
cylinders are produced with seam welding of stainless steel sheets.
Look good and hold up well.<br>
<blockquote type="cite">
<div class="gmail-m_-8448467159597046486WordSection1">
<p class="MsoNormal"><span style="color:windowtext"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext">Are you
aware of any production issues such as quality control as
the numbers get larger?
</span></p>
</div>
</blockquote>
The stoves are assembled at one location (with quality supervision)
from components from 5 different suppliers whose components are
clearly comparable with each shipment. There is surplus production
capacity in the Kolkata area to greatly expand the number of pieces
of each component. <br>
<blockquote type="cite">
<div class="gmail-m_-8448467159597046486WordSection1">
<p class="MsoNormal"><span style="color:windowtext"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext">I
believe this project needs to be written up in a way that
provides an analysis of the conditions that must be in place
to go forward. Having one working example is always 10 times
better than talking up the first one.</span></p>
</div>
</blockquote>
I agree. Just need to find the time to do the write-up. I hope to
do it before ETHOS. By January 2018 the project will be passing
50,000 stoves in use, and (I anticipate) that the number of stoves
per month will be over 4000, with new expansions of the project
coming on-line as fast as funding will allow. (I will discuss
funding issues in a later message.)<br>
<br>
Paul<br>
<br>
<blockquote type="cite">
<div class="gmail-m_-8448467159597046486WordSection1">
<p class="MsoNormal"><span style="color:windowtext"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext">Thanks<br>
Crispin<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:windowtext"><u></u> <u></u></span></p>
<p class="MsoNormal"><br>
Only yesterday did I return from India (GACC Forum and then 9
days at the TLUD (woodgas) project in West Bengal near
Kolkata. Passed 40.000 Champion TLUDs, and increasing at
3000+ per month. More messages will follow.<br>
<br>
Paul <br></p></div></blockquote></div></blockquote></div><br></div></div>