The Cooling System Design of Biomass Gasification in Direct-Flow Reactor

The energy crisis and global warming provide a new direction for developing alternative renewable energy generation technologies using biomass sources. The development of concurrent low-pressure biomass gasification technology has been proven capable of producing combustible gas synthesis. The biomass gasification syngas product has a high temperature (800 oC), therefore to avoid component damage to the 1 kW generator engine, the syngas product is cooled. This cooler’s design uses a pipe with a diameter of 2.54 cm (1 inch) and 1.27 mm thick with the free-air convection method. The types of aluminum and copper materials do not affect the heat transfer rate because the value of conduction thermal resistance is minimal compared to convection thermal resistance. The design calculation results can reduce the temperature from 800 °C to 50 °C, heat transfer of 4597.5 Watts, and the required pipe length of 20.83 m.