Design and Development of Inverted Down Draft Gasifier for Cooking Purpose
Journal Title: Scholars Journal of Engineering and Technology - Year 2014, Vol 2, Issue 2
Abstract
Energy is a key input for technological, industrial, social and economical development of a nation. However, a large number of consumers in domestic, agricultural, commercial and industrial sectors are faced with a situation of energy availability that is characterized by inadequate quantity, poor quality, un-affordability, un-sustainability and negative environmental consequences. The challenge for the country is ensuring affordable-clean energy for all in a sustainable manner. In particular, the domestic sector relies heavily on traditional sources of energy, mainly for cooking, for which traditional stoves are often used. These stoves are usually thermally as well as environmentally inefficient and hence create drudgery and problems for the users. A wide variety of Chulha or biomass stoves are used in Indian kitchens and road side tea stalls and restaurants. These stoves emit smoke, ash and excessive heat creating uncomfortable and unhealthy environment for the user. Combustion rate is not well controlled. The efficiency of these stoves is quite less, generally not exceeding 18-22 %. A natural convection type inverted down draft gasifier has been developed at the College of Agricultural Engineering and Technology; Godhra for thermal purpose (cooking purpose).The inverted down draft gasifier consists of combustion chamber, gas wick, primary air inlet with control, grate, secondary holes for proper combustion of the producer gas and vessel support. The developed gasifier was tested with maize cobs and saw dust briquettes fuel. The experimental investigations show that the overall thermal efficiency of the gasifier using maize cobs with lid and without lid was 33.89 and 29.59 % respectively and in case of saw dust briquettes with lid and without lid was 40.53 and 38.68 % respectively. The maximum power output of the gasifier using maize cob with lid and without lid was 5.00 and 4.37 kW respectively where in the case of saw dust briquettes used in the gasifier with lid and without lid was 6.50 and 6.20 kW respectively. The major advantage of this type of gasifier was that all the energy available in the fuel was used and controlled the fuel consumption rate with the help of primary air inlet. Keywords:
Authors and Affiliations
D. K. Vyas, Tarak Dipak, Mendpara Viral, S. H. Akbari
Keywords
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