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Revision as of 12:11, 2 March 2009
GTZ 3rd EAST AFRICA REGIONAL ENERGY MEETING,Addis Ababa, Ethiopia, 27th – 30th October
Presented by
Andreas Michel, Energising Development, GTZ
Combustion of wood
- Wood consist mainly of carbon, hydrogen and oxygen (CH2O)x
- Results of complete combustion: CO2, H2O and heat
BUT: 'Cooking stove never achieve 100% complete combustion'
There are more combustion products in incomplete combustion like:
- CO, NO2, Small particles
- Formaldehyde, Acrolein, Benzene, Toluene, Styrene, 1,3-Butadiene etc.
- Polyaromatic hydrocarbons
- CO and Particular matter (PM) have the biggest health impacts
Examples:
- CO – low concentration: Mild headache, fatigue, nausea, dizziness
- CO – high concentration: Death within one hour
- PM: strong effects to respiratory system
Annualy X.X mio people die due to being exposed to incomplete combustion every day
IAP and improve stoves
“stoves with less fuel consumption emit less pollutants”
“chimneys reduce IAP signicant”
- EnDev relevant stove ( reduced wood consumption) should have reduced emissions, too
- Evidence of the improvement through CO and PM measurement:
--> Improvement against Baseline
IAP – Measurement Devices
So far:
- seperated devices for PM and CO measurement
- Data analysis difficult
Now:
- One device for PM and CO measurement
- Data analysis simple using MS Excel
- But interpretation needs to be done
Procedure in the field:
- Mount devices
- Switch on, close lid
- Perform test, take notes in parallel
- Open lid, switch off
- In parallel: fill protocol manual
Data analysis
- read data from SD card and press “Process data” button in MS Excel
See, analyse and interpret results
- Careful as calibration of device might be expired
Aprovecho IAP meter
- Demonstration
- 1st tests
- results
IAP measurement
- Understand results
- Check for negative values
- Be critical, don’t trust what you read without crosschecking
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