<div dir="ltr">Dear Ron: <br><br>Please tell more. If these were "Example problems", what else? <br><br>Your objections do seem valid and relevant. However, from your list of six, I think 1) and 2) are context-dependent. The authors may well have reasons to accept char as waste if that is what the users do. <br><br><div class="gmail_extra">As for part of 6), yes, Jim does publish as James Jetter. See for example <a href="https://pubs.acs.org/doi/abs/10.1021/es301693f">https://pubs.acs.org/doi/abs/10.1021/es301693f</a>. I thought you would have read it. <br><br>Nikhil<br clear="all"><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>Nikhil Desai</font></div><div><span style="font-family:georgia,serif;font-size:small">(US +1) 202 568 5831</span><font face="georgia, serif"><br><i>Skype: nikhildesai888</i><br></font><br></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 Sat, Aug 18, 2018 at 9:35 PM, Ronal W. Larson <span dir="ltr"><<a href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</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">List, cc Crispin:<br>
<br>
I was disappointed in this article.<br>
<br>
Example problems:<br>
<br>
1. A TLUD with zero measurement of char production - makes no sense. Measuring the weight of the char is a trivial exercise. I made the same comment about an earlier similar article with 3 different fuels.<br>
2. Said to be a popular stove. I find it inconceivable that users routinely do what is done here - count all char as waste. The name of the stove is not given. The stove appears to have no control on primary air - and a too-large flame in the figure. This should be about a Tier 0 or Tier 1 stove as listed by an efficiency computation of about 15%. <br>
3. Mention is made of the importance of density - but no densities are provided. There is talk of pellets absorbing water easily<br>
4. One of the fuels (the one with the highest moisture content) is listed as having an energy density >21 MJ/kg; I've never seen one that high.<br>
5. Figures 5 and 6 are identical - and the texts don't match with the figures. Maybe 6 is the one in error - but who knows?<br>
6. Several examples of not agreeing with other authors (including Jim Jetter - maybe also "James"?) - but no explanations/rationales for the differences.<br>
<br>
I'd like to know what the values of G2 were for the three cases. And the densities. Too many unanswered questions here.<br>
<br>
Ron<br>
<div><div class="gmail-h5"><br>
<br>
<br>
<br>
> On Aug 18, 2018, at 7:54 AM, Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com">crispinpigott@outlook.com</a>> wrote:<br>
> <br>
> Dear Friends<br>
> <br>
> This will be of interest to the TLUD builders. The long list of references at the end is a really good start if you want to look at emissions from different fuels.<br>
> <br>
> I remind you that this paper is about the emissions from a particular stove, not "the fuel". It is how that stove handled those biomass fuels made from different materials.<br>
> <br>
> The International Journal of Agricultural and Biological Engineering<br>
> <br>
> "Effects of biomass pellet composition on the thermal and emissions performances of a TLUD cooking stove"<br>
> Zhang Zongxi et al 2017.<br>
> <br>
> <a href="https://www.ijabe.org/index.php/ijabe/article/view/2963" rel="noreferrer" target="_blank">https://www.ijabe.org/index.<wbr>php/ijabe/article/view/2963</a><br>
> <br>
> It is open access.<br>
> <br>
> Regards<br>
> Crispin </div></div>
<br>
</blockquote></div><br></div></div>