Indoor Air Pollution (IAP) Measurement

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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:

  1. CO – low concentration: Mild headache, fatigue, nausea, dizziness
  2. CO – high concentration: Death within one hour
  3. 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

  • Rule of thumb:

       “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 measuring and IAP meter.png

IAP measuring and IAP meter2.png


IAP measurement

  • Understand results
  • Check for negative values
  • Be critical, don’t trust what you read without crosschecking


Back to "tests and measuring" section