An Evaluation of A Solid Biomass Cook Stove in Small Household Industry

This paper presents the design of solid biomass natural convection stove test with that solid biomass as fuel in one of the small household industries. Corncob, coconut shell and wood chips waste were utilized using the stove with combustion chamber diameter of 15 cm and the height of 45 cm. The performance test of the stove includes combustion flame temperature, visual flame color and water boiling test as well as economic evaluation.The results of the test showed the start-up time of 10.55-16.34 min., the specific fuel consumption (S_c) of 0.51 to 0.76 kg/h, with the thermal efficiency (η_th) of 20-21% has a maximum fire power of 22.97 kW and 8.76 kW using coconut shells and wood chips, respectively. The biomass consumption cost for boiling water was about IDR 130-300/kg of water. The biomass utilization for frying fish gave a higher profit margin of IDR 1,500/kg fish compared to LPG. From this study, the performance test is met to the Indonesian National Standard of biomass stove (SNI 7926:2013) and suitable for the households, especially small household industries in rural areas. Further study related to CO and particulates emissions will be conducted in an attempt to improve this biomass stove design. Life cycle assessment of the used of solid biomass for heat production will be studied as well.