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Score-StoveTM a clean-burning cooking stovethat also generates electricity was tested using a pressurized kerosene burner.The Score-Stove works on the principle of thermo-acoustics to gen- eratesmall-scale electricity. The device having hot-end, cold-end and regeneratoracts in a way similar to a stirling cycle generating acoustic power, which isthen converted to electricity using a linear actuator. It can supply smallpower for applications such as LED lighting, mobile phone charging and radiosparticularly in rural areas without grid electricity as well as improving house-hold air pollution. After assessing the needs of the rural communities througha survey, tea-stalls and small restaurants owners were identified as clientswith the most potential of using the stove in Bangladesh. Bangladesh Universityof Engineering and Technology ((BUET) modified a Score- Stove to use both woodand a pressurized kerosene burner of a design that is widely used for cookingin rural areas of Bangladesh. The design was adapted to meet performance needssuch as: heating rate, cooking efficiency, energy distribution, electric powergeneration, exhaust emissions and time taken to boil water using standardized waterboiling tests. Performance was also compared with conventional(non-electrically generating) stoves that use a pressurized kerosene burn- er.The Score-Stove performance was then evaluated while increasing the pressure ofthe sealed working fluid (air in this case) from atmospheric to about 1.4 bar.The pressurization was found to almost double the power generation. Anarrangement for utilizing cooling water waste heat was also devised in order toimprove the thermal performance of the stove by 18%. Technical deficiencies aredocumented and recommendations for improvements and future research in order toobtain wider end-user acceptance are made.

Performance of a Score-Stove with a Kerosene Burner and the Effect of Pressurization of the Working Fluid