article · International Review of Mechanical Engineering (IREME)
The heat transfer from the furnace to the Stirling motor is a complex phenomenon that requires good modeling and parametric investigation of an effective Stirling motor to improve the mechanical performance and efficiency of the system. Furthermore, the Stirling motor efficiency also depends on burning characteristics such as the particle size and the excess air proportion. Therefore, this paper has two purposes; the first one is thermal conception of the cogeneration system and the second one is the mechanical design of Stirling motor parts as well as the furnace. The study demonstrates that the felt (woven wire) regenerator type fitted with wires of 80 µm and 79% of porosity gives the maximum value of mechanical power (1115 W; 40%) for a phase angle 95° between hot and cold piston, a motor speed of 420 tr/min, a pressure of 22 bars, 892, 77 °C and 27 °C for hot and cold temperature respectively. Moreover, it also reveals that the smallest particle size provides a higher mechanical power of the Stirling motor.
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DOI: 10.15866/ireme.v17i4.23239
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