Biomass Steam Generation Using Paddy Straw (Rice Husk) This system shows a biomass-fired steam boiler where paddy (rice husk or rice straw) is used as the fuel source to produce steam. How it works: •Straw is fed continuously into the boiler using a mechanical conveyor or chain feed system. •The fuel is burned in a controlled combustion chamber at high temperatures (typically 700–900°C). •Heat from combustion is transferred to water-filled boiler tubes, converting water into high-pressure steam.