Abstract
Among the available alternative sources of energy in Bangladesh bio-oil is recognized to be a promising alternative energy source. Bio-oil can be extracted by pyrolysis as well as expelling or solvent extraction method. In these days bio-oil is merely used in vehicles and power plants after some up gradation. However, it is not used for domestic purposes like cooking and lighting due to its high density and viscosity. This paper outlines the design of a gravity stove to use high dense and viscous bio-oil for cooking purpose. For this, Pongamia pinnata (karanj) oil extracted by solvent extraction method is used as fuel fed under gravity force. Efficiency of gravity stove with high dense and viscous bio-oil (karanj) is 11.81% which of kerosene stove is 17.80% also the discharge of karanj oil through gravity stove is sufficient for continuous burning. Thus, bio-oil can be effective replacement of kerosene for domestic purposes.
Highlights
The energy crisis is the main problem to mankind facing today as non-renewable energy like fossil fuels, oils and natural gases are often scarce due to rapid depletion of these resources
Energy is indispensible for attaining the Millennium Development Goals (MDGs) for Bangladesh
If natural gas is used for power generation at the present rate, this would result in complete depletion of existing reserves within 10–12 years
Summary
The energy crisis is the main problem to mankind facing today as non-renewable energy like fossil fuels, oils and natural gases are often scarce due to rapid depletion of these resources. At present to meet total demand of energy, Bangladesh imports annually about 1.3 million metric tons of crude oil and 2.7 million metric tons (approx.) of refined petroleum products per annum is imported [4]. In order to meet the increasing energy demand for development of agriculture and industry and for the generation of better employment opportunities, it is necessary to harness all the available alternative sources of energy immediately. Some industrial byproducts are suitable feedstock including paper sludge and distillers grain [5,6,7]. This Bio-oil can be produced through pyrolysis, expelling, or solvent extraction method. Pyrolysis is a form of treatment that chemically decomposes organic materials by heat in the absence of oxygen typically occurs under pressure and at operating temperatures above 430◦C (800◦F)
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