[Stoves] PM measurement with Speck

Dean Still deankstill at gmail.com
Thu Jun 11 10:07:56 CDT 2015


Hi Paul,

We have three PM sensors here at the lab (under $100) from China and are
interested in quantifying their performance. The Test Kitchen is set up and
we can try some experiments at Stove Camp for those interested.

Best,

Dean

On Thu, Jun 11, 2015 at 6:47 AM, Paul Anderson <psanders at ilstu.edu> wrote:

>  Stovers,
>
> WONDERFUL!!!     Now this Listserv is really working together!!   So
> summary of comments and thoughts thus far:
>
> 1.  MOST of us were almost unaware of the existence of Speck, and we find
> out (thanks Christina) that there are many such types of units.
>
> 2.  But being inexpensive, they have issues of quality of the data.
> Evidently not of sufficient quality for the HEALTH STUDIES requirements  of
> Kirk Smith and his crew.
>
> 3.  But for those of us in the "trenches" trying to understand how to
> improve the stoves, these small detectors of PM could be of great
> assistance.   If only to be able to detect whether the emissions are
> improving or worsening would be useful for a stove designer to make
> comparisons between one stove with two different variations.
>
> 4.  These smaller PM measurement devices have not yet entered into the
> activities of Aprovecho (as developer of high precision instruments) and
> therefore have not been part of Aprovecho activities for Stove Camps where
> the inexpensive instruments might be of great interest.
>
> 5.  Will these PM sensors be part of Stove Camps?   Or when?   I do not
> have any such sensors, and I am not intending to attend the Aprovecho Stove
> Camp in July (27 to 31, I believe).   Dean and crew or some attendee might
> arrange to have the PM sensors by then.
>
> But there is another Stove Camp early next month (9 - 10 July) in Ontario,
> Canada, headed by Crispin PP and Julien Winter and hosting assistance by
> Alex English.   The focus will be on the RELATIVELY LOW COST emissions
> testing equipment (and procedures) that Crispin knows so well.  If you are
> not familiar with such equipment or want further information and hands-on
> experience, consider attending.   Information about this Stove Camp about
> Testing is available from Julien, who I ask to re-post to the Stoves
> Listserv the contact information and details / agenda (with a new Subject
> line).        So, perhaps further discussion about the inexpensive PM
> measurement devices will be included at that event.
>
> Paul
>
> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
> Email:  psanders at ilstu.edu
> Skype: paultlud      Phone: +1-309-452-7072
> Website:  www.drtlud.com
>
> On 6/10/2015 6:09 PM, Christina Espinosa wrote:
>
> I asked Kirk Smith if he had used this one before and here is his response
> regarding these type of PM devices for the home from tests they have run:
>
> "There a number of PM devices on the market now designed for general
> consumers -- at least a dozen in China alone. plus some here.  We have
> evaluated several and are doing another batch here soon at our lab in
> Richmond.  So far, none has the combination we want of
>
> -- precise and stable enough readings
> --small and light enough for personal monitoring
> --ease in zeroing and calibrating
> --high enough upper limit -- they typically stop at 1 mg/me or lower
> --ease in cleaning -- necessary for our environments or even in dirty
> Asian cities
> --reasonable battery life
> --easy datalogging, downloading, etc
>
> Our UCB-PATs+ does meet these criteria and is now undergoing field
> trials.   (We are also flying it on our aerial particle monitor (drone) in
> India.)  Would not expect it to be commercially available (from BA) until
> early next year, however."
>
>
>
> On Wed, Jun 10, 2015 at 4:22 PM, Roberto Poehlmann <
> roberto.poehlmann at gmail.com> wrote:
>
>>  Paul,
>>
>>  i found this links about specksensor, with experiments results:
>>
>>
>> http://publiclab.org/notes/chrisbartley/04-15-2014/speck-particle-monitor
>>
>>  This is another monitor of PM:
>>  http://www.dylosproducts.com/ornodcairqum.html
>>
>>  ..and another:
>> http://aircasting.org/
>>
>>
>>  Arduino:
>>
>>  In the world of Arduino, you can DIY your own PM device, like this
>> (Dustduino):
>>
>> http://publiclab.org/notes/Schroyer/11-23-2013/measure-coarse-and-fine-air-particulates-with-a-dustduino
>>
>>  It uses the sensor Shinyei PPD-42 Dust Sensor (
>> http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html)
>>
>>  This is a experiment to compare this Japan sensor with a similar Korean
>> Sensor, http://aqicn.org/sensor/shinyei/
>>
>>  It says that "There are many affordable and low-cost air particule
>> sensor. The most famous one is definitely the Japanese Shinyei sensor, with
>> a cost of around 75 CNY (12 USD)"
>>
>>
>>  This is another DIY monitor with arduino:
>>  http://www.instructables.com/id/Make-one-PM25-monitor-with-Arduino-UNO/
>>
>>  It uses the sensor SDS011 (link http://inovafitness.com/product-35.html
>> ).
>>
>>
>>  Finally, i found this document, that describe various sensors and
>> describe how it works.
>> http://www.teco.edu/~budde/publications/inss2012_budde.pdf
>>
>>
>>  I have now two Arduinos, and i will make (some day) my own datalogger
>> (temp, PM, CO, oxygen, etc.). The sensors for Arduino's are not to
>> expensive, and in Internet exists a lot of examples of this type of devices.
>>
>>  This is, for example, a dalalogger made with Arduino:
>>
>>  http://www.instructables.com/id/Arduino-Temp-Logger/
>>
>> https://blog.adafruit.com/2010/09/07/a-thermocouple-datalogger-based-on-the-arduino-platform/
>>
>>  Cheers
>> Roberto
>>
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>>
>>
>
>
> --
> Christina Espinosa
> University of the Pacific '10
> School of International Studies
> c_espinosa1 at u.pacific.edu
>
>
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