[Stoves] News 24 Jan 2017: Joint Research on air pollution of Mongolia

[Traveller]

Crispin:

We are not in disagreement at all. You and I just have different time
frames in mind. (I went to UB in 1998 summer, before the CHP was
rehabilitated and new units added.

BTW, it is not that some units emit "nothing".  They do emit steam - the
most important GHG! - and small amounts of acidic gases and fine
particulates.

A source apportionment study was done for UB by Sarath Guttikunda,maybe 10
or more  years ago?

Dust and auto emissions are probably more serious sources now, if ger
emissions are coming under control. I looked into small boilers and aimak
CHPs/diesels around ten years ago, but didn't go there.

Nikhil

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Message: 14
Date: Fri, 27 Jan 2017 08:24:42 +0000
From: Crispin Pemberton-Pigott <crispinpigott at outlook.com>
To: Discussion of biomass cooking stoves
        <stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] News 24 Jan 2017: Joint Research on air
        pollution of Mongolia
Message-ID:
        <YTOPR01MB02354E050D36F6B638A985BFB1760 at YTOPR01MB0235.
CANPRD01.PROD.OUTLOOK.COM>

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Dear Everyone

>True, "Air pollution represents a major threat to public health in
Ulaanbaatar, and reductions in home heating emissions should be the primary
focus of future air pollution control efforts". But that is because the
central heat and power plant's emissions have been reduced dramatically.

I beg to differ. The combined heat and power (CHP) plants are 4 in number.
Station 1 closed long ago.
Station 2 was converted to a coal semi-coking plant several years ago.
Station 3 is 156 MW and is not a major source of PM emissions in the city.
Station 4 is 540 MW and has a 250m tall chimney which emits into the air
stream passing over the city?s inversion layer. There is virtually nothing
from No.4 reaching the city?s air.
Station 5 has just been approved and emits nothing.

During peak demand in summer for air conditioning and so on, the PM2.5
level in the city is 12-15 microgrammes per cubic metre proving that once
space heating is removed, there is nothing from the power stations.

There are several majors sources:
Vehicles
Fugitive dust from the Gobi and
Power station ash dumps,
Street dust
Low pressure boilers
High pressure boilers such as apartment buildings
Domestic stoves

Domestic stoves were the largest contributor. They have dropped in
importance.  Now it is low pressure boilers. I hear that two new models
designed by the Stove Development Centre (actual product development!) will
be introduced to the market this year. The SDC is attached to the SEET Lab
and headed by the Mongolian University of Science and Technology and the
Energy Research Centre (Min of Energy).

Regards
Crispin
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