Article

Sadhana

, Volume 14, Issue 3, pp 187-212

Five-kilowatt wood gasifier technology: Evolution and field experience

  • S DasappaAffiliated withCentre for the Application of Science & Technology to Rural Areas (ASTRA)
  • , U ShrinivasaAffiliated withCentre for the Application of Science & Technology to Rural Areas (ASTRA)Department of Mechanical Engineering, Indian Institute of Science
  • , B N BaligaAffiliated withCentre for the Application of Science & Technology to Rural Areas (ASTRA)
  • , H S MukundaAffiliated withCentre for the Application of Science & Technology to Rural Areas (ASTRA)Department of Aerospace Engineering, Indian Institute of Science

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Abstract

Various elements of an efficient and reliable 5k W wood gasifier system developed over the last ten years are described. The good performance obtained from the system is related to the careful design of its components and sub-systems. Results from extensive testing of gasifier prototypes at two national centres are discussed along with the experience gained in the field from their use at more than one hundred and fifty locations spread over five states in the country. Issues related to acceptance of the technology are also included. Improvements in design to extend the life, to reduce the cost, and to reduce the number of components are also discussed. A few variants of the design to meet the specific requirements of water pumping, power generation and to exploit specific site characteristics are presented.

Keywords

Five-kilowatt wood gasifier throatless design testing field trials performance gas cooling gas cleaning biomass gasification