[Stoves] Stove testing in Mongolia continues

[Crispin Pemberton-Pigott]

Dear Stove Buildings and Testers

 

Testing has restarted at the SEET lab after a major move to a new location
at the Mining Research Institute north of the city. An announcement was made
in the newspaper asking for stoves to be brought to the SEET Lab. The
following criteria are listed:

 

1.       Stove should have a name, a type and manufacturer clearly stated.

2.       Drawings supplied

3.       It should be well sealed and have controllable air (meaning power
level)

4.       Must be serviceable for both heating and cooking (cooking means
heating a single large wok)

5.       Easy to light, must not require the use of gas cylinders (little
butane blow torches)

6.       Fuels to be uses: coal, semi-coked briquettes and wood

7.       Manufacturer must be able to explain how to ignite it

8.       If the stove is provided by an importer, the importer must have
both an importer's licence and a contract with the supplier assuring supply.

 

The testing will be conducted immediately the stoves arrive. If there are
too many for the lab they will be pre-screened using portable testing
equipment by specialists at the Ulaanbaatar City Air Quality Department.

 

The evaluation metrics are:

-          Ignition method (ease and convenience)

-          Thermal efficiency as a space heater of more than 70% (Siegert
Method)

-          Average heating power of >3.83 kW (net)  [This is the same as 5.5
kW @ 70% efficiency.]

-          PM 2.5 per net MJ of space heating energy (PM2.5/MJ(Net))

-          CO per net MJ of space heating energy (CO/MJ(Net))

-          Average CO/CO2 ratio

-          NOx SOx and H2S (mg/MJ(Net))

-          Safety considerations

 

Power and emissions are considered after 90% of the initial mass of fuel has
burned.

 

Several stoves have arrived including 3 TLUD's (which are the most popular)
and one that lights as TLUD and converts automatically to a side-fed
up-draft configuration. The TLUD's are based on the Silver stove from Turkey
and includes a brand new unit that looks in shape a lot like a Kimberly
Stove. The converting one is based on many of the design features of the
GTZ-7 described previously on this list. It may prove to be the first coal
stove ever built that has net negative PM emissions. All the high end stoves
scrub PM from the ambient air emitting less than they take in, but only
after they have heated up significantly which takes about 15-20 minutes. We
will see.

 

The test method is the SeTAR HTP v3.044 which provides real time emissions
and thermal performance.

 

Regards

Crispin

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20130525/9ff91e46/attachment.html>