Proceedings of the Indian Academy of Sciences

, Volume 2, Issue 3, pp 365–375 | Cite as

Studies in biogas technology. Part II. Optimisation of plant dimensions

  • D. K. Subramanian
  • P. Rajabapaiah
  • Amulya Kumar N. Reddy
Rural Technology


In this paper, the design basis of the conventional Khadi and Village Industries Commission biogas plants has been elucidated. It has been shown that minimisation of the cost of the gas holder alone leads to the narrow and deep digesters of conventional plants. If instead, the total capital cost of the gas holder plus digester is minimised, the optimisation leads to wide and shallow digesters, which are less expensive. To test this alternative, two prototype plants have been designed, constructed and operated. These plants are not only 25–40% cheaper, but their performance is actually slightly better than the conventional plants.


Biogas plants dimensions design optimisation modifications gas production yield capital costs economies of scale 


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  1. Meynell P J 1976Methane: Planning a digester (London: Prism)Google Scholar
  2. Subramanian D K & Reddy A K N (to be published)Google Scholar

Copyright information

© Indian Academy of Sciences 1979

Authors and Affiliations

  • D. K. Subramanian
    • 1
  • P. Rajabapaiah
    • 3
  • Amulya Kumar N. Reddy
    • 2
  1. 1.School of AutomationIndian Institute of ScienceBangalore
  2. 2.Department of Inorganic and Physical ChemistryIndian Institute of ScienceBangalore
  3. 3.Biogas LaboratoryASTRAIndia

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