NAGOYA -- Aisin Seiki is field-testing a biogas power generator in Bangladesh that uses chicken manure.
The company has modified a gas engines to run on biogas, and will use the system to supply power needed by a chicken farm located on the northern outskirts of Dhaka. The Japanese company is considering the potential commercialization of the system, which would be proposed as renewable energy source during power outages and for locations outside of power grids.
Aisin is using a gas engine from its Coremo household co-generation system supplied to Hokkaido Gas. The biogas is a mixture of carbon dioxide and methane produced by fermenting chicken manure in a tank called a digester. Because the gas also contains sulfur, which can cause engine breakdowns, Aisin has developed desulfurization equipment. The gas is supplied to the engine after the sulfur is removed.
The engine has a generating capacity of around 1.5kW, which means a single unit can power the lights and fans at a chicken farm housing around 3,000 birds, a typical size in the region. It has a generation efficiency of 20%, which is reportedly almost three times the efficiency of Chinese engines used by some local farms. Although initial costs are higher than when using Chinese products, Kan Kushiro of the product development project in the company's technology planning department, says Aisin's system will last five times as long.
The field test is being carried out in partnership with a local biogas digester manufacturer. The chicken farm has used a digester for fermenting manure and turning it into fertilizer, but effectively using the byproduct gas had been an issue. To enable enough power to be produced for a larger chicken farm, Aisin is "developing a product whose generation capacity will be raised to 2.5kW," Kushiro said. The field test will run for at least a year.