Biomass is the primary source of energy which is used in cook stove in the most rural area in Bangladesh. However, due to low thermal efficiency and primitive design, these cook stove causes degradation of natural biomass resources as well as serious environmental pollution. The solution of this problem could minimize by introducing Improved Cook Stove (ICS). Metal and non-metal improved cook stove cook-stoves, which are made in Bangladesh were tested according to the international test protocol. Metal improved cook stove showed high efficiency in comparison to concrete and mud type cook stove. Metal cook stove showed substantial thermal efficiency, which is within 35 to 45\% range, where the nonmetal has only 20 to 30\% efficiency. Despite the fact that the nonmetal cook stove has lower efficiency but emission performance was better found in it, that is less toxic or hazards elements exhaust from this type of stove during operation. The metal cook-stove is also subjected to low emission percentage if there is an external arrangement of draught control, which reduce the Carbon-mono- oxide (CO) concentration to about 2 ppm. The objective of this research is to assess the thermal performance of the cook stove. Thermal efficiency is substantially affected by cook stove structure and stove material properties. Also, there is a new development of ICS has been presented whereby using the surface temperature of metal cook-stove electricity is generated, a Peltier module was used for this purpose. The thermo-electric generator can be used to produce electricity from the wasted heat of improved cook stove. This concept is based on the principle of Seebeck effect. The front and back side of a cook stove is a potential source of the heat source which provides higher temperature to the one side of the module and another side is maintained at a temperature below the heat source by mixing water and ice. The temperature difference produces electricity which can be used to power a LED lamp. Three TEG modules have been connected in series to raise voltage level. The amount of electrical power generated is 0.5649 watt and this power has been used to turn a LED. Future development is needed to boost the output power.
Details: M. Sc Thesis