To period longer than a combustion chamber 8 Row 4 pores. This period produce biogas for as long as possible for 19.5 minutes. The period of gas production at the very least, for 12.5 minutes, the maximum temperature 99.8 C and low temperature 99.3 degrees Celsius. The efficiency and the maximum gas production, biomass 78.69% production efficiency of producer gas ต่ำสุ 48.73%.