[Stoves] Stoves Digest, Vol 99, Issue 19

Sat Nov 24 00:45:30 CST 2018

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MICHAEL W. JOHNSON
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On Fri, Nov 23, 2018 at 2:00 PM <stoves-request at lists.bioenergylists.org>
wrote:

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> Today's Topics:
>
>    1. Re: Off-topic: air pollution in a Kenya spot (re: Teddy)
>       (Cookswell Jikos)
>    2. Re: ESPs for stove solidfuel PM2.5? (Andrew Heggie)
>    3. Invitation to attend the 27th Domestic Use of Energy
>       Conference (Crispin Pemberton-Pigott)
>
>
>
> ---------- Forwarded message ----------
> From: Cookswell Jikos <cookswelljikos at gmail.com>
> To: Nikhil Desai <ndesai at alum.mit.edu>
> Cc: Crispin Pemberton-Pigott <crispinpigott at outlook.com>, Discussion of
> biomass cooking stoves <stoves at lists.bioenergylists.org>
> Bcc:
> Date: Thu, 22 Nov 2018 22:37:02 +0300
> Subject: Re: [Stoves] Off-topic: air pollution in a Kenya spot (re: Teddy)
> Hi Nikhil,
>
> If you'd like to catch up with Nairobi today, google maps has kindly
> started street view here
> <https://www.google.com/maps/@-1.3104459,36.873585,3a,75y,189.21h,68.84t/data=!3m7!1e1!3m5!1sAF1QipMwbsLgR8hbKSTn96eVAQyDXXpy71qlA7cLbhPz!2e10!3e11!7i5376!8i2688> -
> you can now take a cruse around KwaRuben and see if you can spot the
> smokestacks, charcoal depots and various types jikos street vendor are
> using.
>
>
> Teddy Kinyanjui
> Sustainability Director
>
>
>
>              <https://www.facebook.com/CookswellJikos>
> <https://www.instagram.com/cookswelljikos>
> <https://twitter.com/cookswelljikos?lang=en>
>
>
>
>
>
>
>
>
>
> On Wed, Nov 21, 2018 at 6:19 AM Nikhil Desai <pienergy2008 at gmail.com>
> wrote:
>
>> Teddy:
>>
>> I looked up Reuben  and the steel mill and realized, My God, I know these
>> locales!
>>
>> Didn't have anything to do there, but these were excursions from or to
>> the airport when I had a few hours to kill and was alone.
>>
>> Any measurements such as these have to be encouraged. That they need to
>> be interpreted cautiously wouldn't be understood unless somebody was
>> collecting the data.
>>
>> It is also unsurprising that Mr. Nangulu's response was uninformed.
>> Crispin, Steven, and I ridiculed his mention of ESP, but I recognize that
>> regulatory staffs in low income countries are not trained properly and do
>> not actually get to enforce regulations.
>>
>> I have not been to Nairobi since 2010 and don't do air quality management
>> work, but I think ll African countries should quickly come up to speed on
>> this because of the demographic boom and transport, industry  growth.
>>
>> Nikhil
>> ------------------------------------------------------------------------
>> Nikhil Desai
>> (US +1) 202 568 5831
>> *Skype: nikhildesai888*
>>
>>>
>>>>
>
>
> ---------- Forwarded message ----------
> From: Andrew Heggie <aj.heggie at gmail.com>
> To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>
> Cc:
> Bcc:
> Date: Fri, 23 Nov 2018 11:06:04 +0000
> Subject: Re: [Stoves] ESPs for stove solidfuel PM2.5?
> On Wed, 21 Nov 2018 at 03:46, Crispin Pemberton-Pigott
> <crispinpigott at outlook.com> wrote:
> >
> >
> > There is no doubt that cooking emissions in the home are a problem for
> modern structures because of the low air turnover.
>
>
> Recommended air changes per hour in UK  see to be 7-8 but this is
> probably more to do with preventing condensation from cooking,
> presumably with a flueless biomass cook stove it would need to be much
> higher, with a chimney I would expect it to be similar. Many kitchens
> will use a natural gas hob which is essentially flueless but clean
> burning.
> >
> >
> >
> > Of particular importance are animal oils (fish for example) that are
> over-heated and evaporated. They will be high in BaP and other PAH’s.
>
> Yes  this will come from partial oxidation, from flame grilling or as
> you previously pointed out where fat drips onto coals.
> >
> >
> >
> > I was looking at the Kyrgyz Republic indoor air quality measurements
> from Fresh Air, Netherlands. It is rare to find a home that is below 25
> µg/m3 even after installing a good stove.
>
> ...but is 25µg/m3 the target we should be aiming for, I realise this
> is the level the World Health Organisation say but how practicable is
> it given your next paragraph?
> >
> >
> >
> > Boots on the floor, smoking and cooking provide almost 100% of the IAP
> once the stove is taken care of.
>
> This is very much what I see at home, around 5µg/m3 quiescent state
> but when I walk into the room I notice a temporary rise to over
> 10µg/m3, some of this may possibly be from particulates released into
> the local atmosphere by *my* chimney as I heat with wood, as well as
> background particulates and dust from my working.
>
> >
> >
> >
> > As for the use of electrostatic precipitators and catalytic converters,
> they have both been promoted recently in Ulaanbaatar at a cost equal to or
> above the cost of providing a highly advanced new stove. In other words
> they are willing to spend more money to clean up emissions instead of
> preventing them in the first place.
>
> Yes I cannot see this being a sensible use of the money, nor fitting
> filters like a diesel car has to have now in UK (they have a back
> pressure which could not be overcome with natural draught).
>
> >
> > Run properly the PM output is about 0.006 g/kg burned. Run badly it is
> about 4 or 5 times that: 0.030 g/kg. It is not worth spending hundreds of $
> per installation to reduce that further.
>
> This will be coal burning then?
> >
> >
> >
> > I see one of the stoves at the competition in DC reached 0.42 with
> wood.  That’s pretty good.
>
> So is it a sensible target, 0.42g/kg of fuel burned? If we assume
> 150% excess air (or more as long as it's known) we can relate that to
> a particulate concentration in µg/m3 of the stack emissions.
>
> ...and yes Nikhil I realise I am being deterministic where you
> consider it is meaningless but I still feel targets are needed.
>
> Andrew
>
>
>
>
>
> ---------- Forwarded message ----------
> From: Crispin Pemberton-Pigott <crispinpigott at outlook.com>
> To: "'Stoves (stoves at lists.bioenergylists.org)'" <
> stoves at lists.bioenergylists.org>
> Cc:
> Bcc:
> Date: Fri, 23 Nov 2018 17:02:25 +0000
> Subject: [Stoves] Invitation to attend the 27th Domestic Use of Energy
> Conference
> Dear Friends
> This is an annual event with a stove-oriented parallel session providing
> an opportunity to present research, designs and thinking relevant to
> cooking and heating.
> All papers are reviewed and published.
> See you there!
> Crispin
>
> Cape Peninsula University of Technology, Wellington Campus
> 25-27 March 2019
> We invite you to attend and contribute to the Conference, The conference
> is a celebration of the convenience of electricity and investigates new
> ways to “do more with the energy you use” – productive use of a strategic
> resource by an ever expanding base of consumers in both the residential and
> business sector means that South Africa can grow its economy thanks to a
> reliable electricity supply. Enjoy Wellington, and idyllic town 40 minutes
> from, Cape Town at the finest time of the year! At the same time, please
> join the local drive to conserve water – our other most precious resource.
> Full day workshop on Microgrids / Eskom
> Conference fee including workshop R3500. 10% discount for early bird
> registration
> SUBMISSION OF PAPERS
> Important dates
> 1 December 2018
>
> Submission of abstracts (200 – 220 words).
>
> 14 December 2018
>
> Notification of Abstract acceptance.
>
> 14 January 2018
>
> Full paper Submission of papers in accordance with DUE guidelines.
> Submission of full manuscript prepared in accordance with guidelines.
> Submission before the deadline will allow for papers to be corrected in
> accordance with recommendations by referees rather than non-acceptance.
> (For guidelines go to http://www.energyuse.org.za/due/<
> https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.energyuse.org.za%2Fdue%2F&data=02%7C01%7C%7C1f515814a55b4f3f75c808d6512cb16e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636785651473569399&sdata=otO%2FYdRTQ3NLiMpcFzJGX8SKE4ngeVW%2B9tMmepQOUDA%3D&reserved=0
> >)
>
> 14 February 2019
>
> Notification of paper acceptance
>
> 28 February 2019
>
> Final version of paper submission
>
>
> Conference abstracts should be submitted online using the template on the
> conference webpage www.energyuse.org.za/due/<
> https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.energyuse.org.za%2Fdue%2F&data=02%7C01%7C%7C1f515814a55b4f3f75c808d6512cb16e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636785651473569399&sdata=otO%2FYdRTQ3NLiMpcFzJGX8SKE4ngeVW%2B9tMmepQOUDA%3D&reserved=0>
> To register, please complete the registration form under "Registration" on
> the conference webpage and submit it to due at cput.ac.za<mailto:
> due at cput.ac.za>
>
> We look forward to welcoming you – and as many of your colleagues as you
> can bring with you!
>
> Best regards,
>
> [cid:image006.jpg at 01D48326.119413E0]
>
>
>
>
>
> Prof MTE Kahn
>
> Director: Energy Institute
>
> Head: CDPES
> [cid:image007.png at 01D48326.119413E0][cid:image005.jpg at 01D4830D.209AB3D0]
>
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