Development of biomass Stoves

Nepal Journal of Science and Technology, 2013

Biomass such as agricultural and forestry residues are important resources for energy in Nepal. This biomass can be converted into densified soild biofuel by briquetting fuel technology which can address handling, transportation, and storage problems. In addition, it helps to increase a number of applications and enhance its utilization efficiency. The purpose of this study is to quantify the physical and chemical properties of different biomass, such as sawdust, banana stem, rice straw, etc. and combustion in order to investigate clear options. Additionally, it helps to provide the efficiency of stoves available at Nepal Academy of Science and Technology (NAST) laboratory. Among the feedstock tested, Mikania micrantha char had highest fixed carbon of 45.92% which clearly shows that it is a good source for biomass briquetting. Out of four stoves tested, Baked Ceramic 4 BHB Stoves had highest efficiency of 33.4% with Banmara briquettes. The study also showed reduced emission of harmf...

International Journal of Current Microbiology and Applied Sciences, 2017

2015

Thesis submitted in partial fulfilment of the requirement for the degree of Masters of Science in renewable energy in the school of engineering and technology of Kenyatta University

PROtek : Jurnal Ilmiah Teknik Elektro

Biomass briquette stove is a cooking tool that is still widely used by the people of the interior of South Sulawesi. Even in urban areas, it is not uncommon to find their use because of the ease of obtaining briquettes and its relatively good efficiency. This study aims to determine the best performance of a biomass stove from three types of clay material stove shapes in different configurations of geothermal variations. The three variations of the geometric shape of the stove are cylindrical, rectangular and hexagonal using biomass material from coconut shell charcoal in the shape of a honeycomb with an inner diameter of 15 mm and an outer diameter of 65 mm and a height of 45 mm. The uniqueness of this stove is the addition of a sleeve diameter of 180mm in the stove's combustion chamber as heat insulation so that the combustion process in the combustion chamber can be more perfect. The test results show that the presence of a flat surface on the stove wall will accelerate heat ...

International Journal of Design & Nature and Ecodynamics, 2022

The performance analysis of the biomass briquette stove has been carried out. The research was conducted with three variations of stove wall materials (clay, steel, and aluminum) and with several variations of shell diameter of the burning chamber (140mm, 150mm, 160mm, 170mm, and 180mm). The fuel used is coconut shell briquettes. The results showed that the maximum fire temperature of clay, steel, and aluminum stoves was obtained, respectively 798℃, 617℃, 508℃ and thermal efficiency of 73.66% for clay followed by a steel stove of 38.98% and the lowest is obtained on an aluminum-based stove, which is only 11.49%. Furthermore, the diameter of the shell optimum is 180 mm for clay, 160 for steel, and 170 for aluminum.

Cooking stoves by …, 2002

Realisation that improved cooking stoves (ICS) can relieve pressure on biomass resources led to ICS programs in most developing countries of the world. Most of the ICS programs are directed towards development of improved household cooking stoves, while relatively less work has been done on development of bigger stoves that could be used in institutional kitchens or certain traditional rural cottage industries. Three different designs of such stoves, using biomass briquettes as fuel, have been studied:

Unicross Journal of Contemporary Research (JOCRES), 2022

Energy demand for cooking stoves has been on the increase throughout the world. In Nigeria about 60% of the population depends on fire wood and charcoal for cooking. The threats posed by fossils fuels and the inefficient use of biomass, can be mitigated by effective utilization of biomass waste when converted to briquettes through densification and effectively used with domestic stoves. Design, production and evaluation of two types of cooking stoves using alternative fuels produced from sawdust, wood shavings and rice husk as briquettes was done. Weight of briquette burnt (kg), % char produced, fuel consumption rate (kg/hr), thermal efficiency (%), power input and output (kW) and specific fuel consumption (PHU) was evaluated. It was revealed that in both stoves, sawdust briquette had the highest power output (kW), 30365.27 kW, followed by the wood shavings briquette, 22225.77 kW and rice husk briquette with power output of 14968.21 kW. Thus the thermal efficiency of sawdust briquette was highest, 74.22%, followed by that of wood shavings briquette, 71.44% and rice husk briquette, 67% respectively in both stoves. Hence future researchers should intensify works on using different types of waste materials in the production of briquettes as fuels for use with domestic stoves.

International Journal of Agricultural and Biological Engineering, 2011

Abstract: A powered stove was designed to utilize biomass effectively with easy ignition, uniform fire, and shorter cooking time. The stove consists of a blower with hand winder and a fuel carrier. Performance evaluation carried out show that boiling time decreased with increased volumetric air flow rate. For air flow rates of 0.13 m 3 /s, 0.14 m 3 /s, and 0.16 m 3 /s, the time to bring 4.5 L of water to boiling point decreased correspondingly from 14 to 12 and to 10 min. This trend was observed for all the biomass used namely wood, corn cobs and charcoal. However in comparing with the three biomass fuels, it took longer time to bring water to boiling point by using charcoal followed by wood and corn cobs in the above order. The percentage heat utilized and fuel efficiency increased with increase in the volumetric air flow rate. There was no significant difference ( P ≥0.05) in the heat utilization and fuel efficiency of wood, corn cobs and charcoal. The results also show that the s...

Journal of Emerging Trends in Engineering and Applied Sciences, 2, 514-520., 2011

Locally fabricated biomass stoves have become household items in igeria. The fabricated stoves are usually made by local artisans who have little or no knowledge of engineering principles and methods. A portable "improved cookstove" (ICS) that incorporates a cylindrical ceramic combustion chamber into a framed cylindrical metal casing for cladding and ease of handling was developed and tested in the

ARPN Journal of Engineering and Applied Sciences, 2014

The increase in energy demand caused by population growth and resource depletion of oil reserves as well as the problems of emissions from fossil fuels put pressure on every country, especially Indonesia. Briquettes of corncob were one of the alternatives. In addition replaced the firewood, they also did not potentially damage the ecology of the forest and could replace fossil fuel reserves that were running low. Water boiling test was used to determine the performance of a portable stove with and without fin. Inside the stove there were 3 pots: pot 1 contained egg, pot 2 contained of rice, and pot 3 was vegetables. This study was obtained for the power of furnace for different diameter of briquette 3/4 ", 1" and 1.5" without fins was equal to 0.87 kW, 1.12 kW and 1.57 kW, respectively. Efficiency 17.58%, 19.7%, and 23.15%. While the furnace with diameter briquette 3/4 ", 1" and 1.5" using fins obtained the power 0.98 kW, 1.32 kW and 1.96 KW. Efficiency 14.84%, 20.91% and 25.27%. The fastest cooking time was gained for the finned pan with diameter of briquettes 1.5" over 20 minutes.