Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
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
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
Emission measurements were conducted in hundreds of homes from these global regions.
Ethos 2013 Nepal India Uganda Honduras Tibet
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.
• 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.
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
How to read these plots
The center is the average of the measurements
How to read these plots
The center is the average of the measurements
How to read these plots This is the 95% confidence interval
HOW DO FUELS, STOVE TYPE AND LOCATION AFFECT EMISSIONS?
What maVers ?
Measurements in Tibet
Measurements in Tibet
Tier 0 Tier 4
Tier 0
Measurements in India
Tier 0 Tier 4
Tier 0
Measurements in India Tier 0 Tier 4
Tier 0
Tier 4
Measurements in Nepal Plains Tier 0 Tier 4
Tier 0
Tier 4
Measurements in Nepal Mid-‐Hills Tier 0 Tier 4
Tier 0
Tier 4
Measurements in Uganda Tier 0 Tier 4
Tier 0
Tier 4
Measurements in Honduras* Tier 0 Tier 4
Tier 0
Tier 4
*Measured 2004-‐2006
Combined fuels, all loca'ons Tier 0 Tier 4
Tier 0
Tier 4
• Next we will look Combus5on Efficiency 𝐶𝑂↓2 /(𝐶𝑂↓2 +𝐶𝑂)
• Next we will look Combus5on Efficiency 𝐶𝑂↓2 /(𝐶𝑂↓2 +𝐶𝑂) • And Single ScaAering Albedo
𝑆𝑐𝑎𝑡𝑡𝑒𝑟𝑖𝑛𝑔 ( 1/𝑚 )/𝑆𝑐𝑎𝑡𝑡𝑒𝑟𝑖𝑛𝑔 (1/𝑚 )+𝐴𝑏𝑠𝑜𝑟𝑝𝑡𝑖𝑜𝑛 ( 1/𝑚 )
SSA ≈ 0.2
SSA ≈ 1
Measurements in Nepal Plains
More Black Carbon More Organic (White) Carbon
Measurements in Nepal Plains
More Black Carbon More Organic (White) Carbon
Measurements in Tibet
More Black Carbon More Organic (White) Carbon
Measurements in Uganda
More Black Carbon More Organic (White) Carbon
Measurements in India
More Black Carbon More Organic (White) Carbon
Measurements in Nepal Mid-‐Hills
More Black Carbon More Organic (White) Carbon
Measurements in Honduras
More Black Carbon More Organic (White) Carbon
Combined fuels, all loca'ons
More Black Carbon More Organic (White) Carbon
DISCUSSION
Further tests are planned.
Ethos 2013 Nepal India Uganda Honduras Tibet
Opportuni'es?
Ethos 2013 Nepal India Uganda Honduras Tibet
Dung (cow and buffalo)
Dung (cow and buffalo)
Dung (cow and buffalo)
Ag waste, leaves and s5cks
HOW COULD WE HELP MEET THESE USERS NEEDS?
ADDITIONAL SLIDES
TEST PICTURES What are these things we’re tes'ng?
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
Nepal Dec 2011 – Jan 2012 8 kerosene lanterns measured
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
Stove 1 candy making stove
1 improved poAery kiln
1 tradi5onal poAery kiln
Stoves in Tibet
Stoves in Nepal Plains
Stoves in Nepal Plains
Stoves in Nepal Mid-‐hills
Stoves in Uganda
Stoves India
Stoves in Honduras