comparave*analysis*of*stove* emission*variability*using...
TRANSCRIPT
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Compara've analysis of stove emission variability using a large
global dataset C. Weyant*, Jin Dang, Pengfei Chen, Ashma Vaidya , Ganesh Ram Shrestha
Chaoliu Li , R.D. Edwards, K.R. Smith, T.C. Bond
*[email protected] University of Illinois Urbana-‐Champaign
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In-‐home tests of rural cooking in tradi5onal stoves. Cooks make whatever they would be cooking that day for their family, using whatever stove or fuels they want
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Emission measurements were conducted in hundreds of homes from these global regions.
Ethos 2013 Nepal India Uganda Honduras Tibet
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Each stove measurement included emissions of several parameters.
• Gasses
• (CO, CO2), • Aerosols
• (PM2.5, organic & elemental carbon), and • Op'cal proper'es of par'cles (light absorp'on and scaVering)
• In recent campaigns, CH4, VOCs, and SO2 were also collected.
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• Gasses
• (CO, CO2), • Aerosols
• (PM2.5, organic & elemental carbon), and • Op5cal proper5es of par5cles (light absorp5on and scaAering)
• In recent campaigns, CH4, VOCs, and SO2 were also collected.
• Today we will talk about only some of these results.
Each stove measurement included emissions of several parameters.
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How to read these plots
This shape is a representa'on of a set of measurements. In this case, it is the test of shrubs burned in tradi'onal stoves in Nepal
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How to read these plots
The center is the average of the measurements
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How to read these plots
The center is the average of the measurements
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How to read these plots This is the 95% confidence interval
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HOW DO FUELS, STOVE TYPE AND LOCATION AFFECT EMISSIONS?
What maVers ?
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Measurements in Tibet
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Measurements in Tibet
Tier 0 Tier 4
Tier 0
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Measurements in India
Tier 0 Tier 4
Tier 0
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Measurements in India Tier 0 Tier 4
Tier 0
Tier 4
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Measurements in Nepal Plains Tier 0 Tier 4
Tier 0
Tier 4
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Measurements in Nepal Mid-‐Hills Tier 0 Tier 4
Tier 0
Tier 4
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Measurements in Uganda Tier 0 Tier 4
Tier 0
Tier 4
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Measurements in Honduras* Tier 0 Tier 4
Tier 0
Tier 4
*Measured 2004-‐2006
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Combined fuels, all loca'ons Tier 0 Tier 4
Tier 0
Tier 4
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• Next we will look Combus5on Efficiency 𝐶𝑂↓2 /(𝐶𝑂↓2 +𝐶𝑂)
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• Next we will look Combus5on Efficiency 𝐶𝑂↓2 /(𝐶𝑂↓2 +𝐶𝑂) • And Single ScaAering Albedo
𝑆𝑐𝑎𝑡𝑡𝑒𝑟𝑖𝑛𝑔 ( 1/𝑚 )/𝑆𝑐𝑎𝑡𝑡𝑒𝑟𝑖𝑛𝑔 (1/𝑚 )+𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 ( 1/𝑚 )
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SSA ≈ 0.2
SSA ≈ 1
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Measurements in Nepal Plains
More Black Carbon More Organic (White) Carbon
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Measurements in Nepal Plains
More Black Carbon More Organic (White) Carbon
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Measurements in Tibet
More Black Carbon More Organic (White) Carbon
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Measurements in Uganda
More Black Carbon More Organic (White) Carbon
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Measurements in India
More Black Carbon More Organic (White) Carbon
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Measurements in Nepal Mid-‐Hills
More Black Carbon More Organic (White) Carbon
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Measurements in Honduras
More Black Carbon More Organic (White) Carbon
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Combined fuels, all loca'ons
More Black Carbon More Organic (White) Carbon
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DISCUSSION
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Further tests are planned.
Ethos 2013 Nepal India Uganda Honduras Tibet
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Opportuni'es?
Ethos 2013 Nepal India Uganda Honduras Tibet
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Dung (cow and buffalo)
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Dung (cow and buffalo)
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Dung (cow and buffalo)
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Ag waste, leaves and s5cks
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HOW COULD WE HELP MEET THESE USERS NEEDS?
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ADDITIONAL SLIDES
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TEST PICTURES What are these things we’re tes'ng?
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Nepal Dec 2011 – Jan 2012
• 30 stove tests • 8 kerosene lamps • 2 restaurant test • 6 PoVery kiln tests • 1 candy making opera'on • 1 haystack
30 tradi5onal stoves measured
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Nepal Dec 2011 – Jan 2012 8 kerosene lanterns measured
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Nepal Dec 2011 – Jan 2012
• 30 stove tests • 8 kerosene lamps • 2 restaurant test • 6 PoVery kiln tests • 1 candy making opera'on • 1 haystack
1 haystack measured
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Stove 1 candy making stove
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1 improved poAery kiln
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1 tradi5onal poAery kiln
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Stoves in Tibet
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Stoves in Nepal Plains
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Stoves in Nepal Plains
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Stoves in Nepal Mid-‐hills
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Stoves in Uganda
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Stoves India
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Stoves in Honduras