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<DIV><FONT face=Arial>Dear Paul</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>The reason why "Cooking Only", "Heating Only" and "Cooking
+ Heating" functions are important are as follows:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial><STRONG>1: Cooking Only</STRONG>: In this case, for a
given amount Fuel consumption, the only useful task performed is Cooking, so the
Fuel Efficiency would be calculates as follows:</FONT></DIV>
<DIV><FONT face=Arial><STRONG>Fuel Eff. = (Energy to Cook Pot)
/ (Energy in Fuel Consumed.)</STRONG></FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial><STRONG>2: Heating Only:</STRONG> In this case, where
there is a need for Space Heating, the Fuel Efficiency would be calculated as
follows:</FONT></DIV>
<DIV><FONT face=Arial><STRONG>Fuel Eff. = (Energy to Heated Space) / (Energy in
Fuel Consumed)</STRONG></FONT></DIV>
<DIV><FONT face=Arial>I feel it is important to consider "Heating Only" stoves,
in that they consume vastly more fuel where they are used. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial><STRONG>3: Cooking + Heating:</STRONG> In this case, where
there is a need for both a Cooking Capability and a Space Heating Capability,
the heat loss from the shell of the stove is beneficial, and it can be sensibly
added to the heat that was used for cooking. In this case, the Fuel Efficiency
would be calculated as follows:</FONT></DIV>
<DIV><FONT face=Arial><STRONG>Fuel Eff. = (Energy to Heated Space + Energy to
Cook Pot) / (Energy in Fuel Consumed.)</STRONG></FONT></DIV>
<DIV><FONT face=Arial>Note also that when the shell heat loss from such a stove
is not needed, it cannot be claimed as a contributor to efficiency. The Test
Report Protocol would have to adjust for the expected percentage of annual
cooking time when the heating effect would be useful.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Clearly, a "Cooking + Space Heating" stove will likely
show an true efficiency that is higher than that of a "Cooking Only Stove"
in that it can justifiable claim credit for space heating. This has
important implications for the Stove Designer. For a "Cooking Only" stove,
the designer should insulate the shell of the stove, to maximize heat available
to the Cookpot and to minimize heat loss through the shell, in that any heat
loss through the shell is wasted and the stove gets no credit for it.
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>With a "Cooking only" stove in the tropics, the
shell heat loss can actually be a disadvantage, simply from a discomfort
standpoint.</FONT></DIV></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>On the other hand, for a "Cooking + Heating" stove, there
is less need for shell insulation, in that the shell heat loss has value.
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Note also that a Customer in a region requiring space
heating may actually be able to avoid the need for a second
stove</FONT> <FONT face=Arial>if he has a "Cooking + Space Heat stove of
adequate size. Most likely, however, his "optimal solution" would be two
stoves... a smaller Cooking + Space Heating" stove that was sized for
cooking needs would be used every day, primarily for cooking, but with
extended running, it would provide for extra heating needs. in cold weather, a
larger "Space Heating Only" stove would be fired up when the cook Stove heat
loss was insufficient for comfort.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Interesting, eh?</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Best wishes,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Kevin</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=psanders@ilstu.edu href="mailto:psanders@ilstu.edu">Paul Anderson</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, April 30, 2013 11:40
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Stoves] Stove
Definition</DIV>
<DIV><BR></DIV>
<DIV class=moz-cite-prefix>Kevin,<BR><BR>The definition provide by Christa
raises an interesting question:<BR><BR>Stove =
________________. And there are cookstoves or cook stoves =
for cooking.<BR><BR>Well, the there can be heat stoves or
heating stoves that do not necessarily have capacity for cooking.
One well know example is the Franklin
Stove by Benjamin Franklin. <BR><BR>So,
"stove" usually implies cooking, but certainly can also be for space
heating.<BR><BR>But I will not debate this topic.<BR><BR>Paul<BR><PRE class=moz-signature cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
Email: <A class=moz-txt-link-abbreviated href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</A> Skype: paultlud Phone: +1-309-452-7072
Website: <A class=moz-txt-link-abbreviated href="http://www.drtlud.com">www.drtlud.com</A></PRE>On
4/30/2013 12:09 PM, CHRISTA ROTH wrote:<BR></DIV>
<BLOCKQUOTE cite=mid:A1A2E223-10AE-4B31-99FE-B24E016454B1@foodandfuel.info
type="cite"><BASE href="x-msg://221/">Kevin, find a definition attempt
on <A href="https://energypedia.info/wiki/Improved_Cookstoves_"
moz-do-not-send="true">https://energypedia.info/wiki/Improved_Cookstoves_</A>–_What_is_it_all_about%3F
<DIV>it is a bit more specific than merriam-webster. </DIV>
<DIV>Would you agree with the following:<BR>
<DIV><BR></DIV>
<DIV>
<H1
style="BACKGROUND-IMAGE: none; BORDER-BOTTOM: rgb(170,170,170) 1px solid; TEXT-ALIGN: left; PADDING-BOTTOM: 0.17em; LINE-HEIGHT: 30px; BACKGROUND-COLOR: rgb(255,255,255); MARGIN: 0px 0px 0.6em; WIDTH: auto; FONT-FAMILY: arial, helvetica; CLEAR: both; FONT-SIZE: 22px; FONT-WEIGHT: normal; PADDING-TOP: 0.5em"><SPAN
id=What_is_a_stove.3F class=mw-headline>What is a stove?<BR></SPAN></H1>
<DIV
style="Z-INDEX: auto; POSITION: static; TEXT-ALIGN: left; LINE-HEIGHT: 20px; BACKGROUND-COLOR: rgb(255,255,255); MARGIN: 0.4em 0px 0.5em; FONT-FAMILY: arial, helvetica; FONT-SIZE: 14px">The
term ‘stove’ refers to a device that generates heat from an energy carrier
and makes that heat available for the intended use in a specific
application. Cook stoves are made to transfer the generated heat to food,
with the purpose to get it cooked and edible for human consumption. Thus ‘a
stove’ features the <B>combination of heat generation and heat
transfer</B> to a <U>cooking pot</U> if the food is cooked in
a liquid, or a <U>griddle, plancha</U> etc. if the food is baked
on a hot surface or roasted without liquid.</DIV>
<DIV>
<DIV><BR></DIV>
<DIV>Am 30.04.2013 um 18:50 schrieb Kevin <<A
href="mailto:kchisholm@ca.inter.net"
moz-do-not-send="true">kchisholm@ca.inter.net</A>>:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<DIV
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; FONT: medium Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; WORD-SPACING: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"
text="#000000" bgcolor="#ffffff">
<DIV><FONT face=Arial>Dear List</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Just what is a "stove?"</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>I would suggest that it is important that we all
know what a "stove" is, when we attempt to determine the difference
between a "good stove" and a "poor stove.'</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>When we ask Mr. Google, we get more than 7 million
hits. However, the most common definitions seem to be typified by the one
at</FONT></DIV>
<DIV><FONT face=Arial> <A
href="http://www.merriam-webster.com/dictionary/stove"
moz-do-not-send="true">http://www.merriam-webster.com/dictionary/stove</A></FONT></DIV>
<DIV><FONT face=Arial>" 1<SPAN class=ssens><EM class=sn>a</EM><SPAN
class=Apple-converted-space> </SPAN><STRONG>:</STRONG><SPAN
class=Apple-converted-space> </SPAN>a portable or fixed apparatus
that burns fuel or uses electricity to provide heat (as for cooking or
heating)<SPAN
class=Apple-converted-space> </SPAN></SPAN>"</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>At<SPAN class=Apple-converted-space> </SPAN><A
href="http://stoves.bioenergylists.org/"
moz-do-not-send="true">http://stoves.bioenergylists.org/</A> , the
stated purpose of the site is:</FONT></DIV>
<DIV><FONT face=Arial>"<FONT face="Times New Roman">Our site is dedicated
to helping people develop better stoves for cooking with biomass fuels in
developing regions.</FONT><SPAN
class=Apple-converted-space> </SPAN>"</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>What about accepting the Merriam-Webster definition
for a "stove?"</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Would anyone have a better definition for a
"stove?"</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Best wishes,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Kevin</FONT></DIV>
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