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This study investigates the performance of a horizontal Gamma-type Stirling engine using air as the working fluid. The engine, which utilizes a slider-crank mechanism with two power pistons, was subjected to various heat inputs provided by torch burners, an electric band heater, and syngas from biomethanol production. The heat rejection was managed through both air and water cooling to compare their effectiveness. The primary objective was to measure the angular velocity and power output of the engine during its startup phase. The results indicated that the maximum angular velocity achieved was 225.9 rpm, with an average power output of 22.83 watts at a heater temperature of 445–455 °C. Water cooling system enhanced angular velocity and power output of the Stirling engine in all tests. However, results showed that water cooling system marginally improved the power output compared to the air cooling, the difference was not significant.

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The Effect of Heat Input and Heat Rejection on a Horizontal Gamma-Type Stirling Engine Performance

  • 会议论文

  • 发表日期：

    2025年

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  • Chen Surapantanakorn,
  • Chootrakul Siripaiboon,
  • Kreetha Somkeattikul,
  • Chaiyaporn Silawatchananai,
  • Chinnathan Areeprasert,
  • Hang-Suin Yang

摘要

This study investigates the performance of a horizontal Gamma-type Stirling engine using air as the working fluid. The engine, which utilizes a slider-crank mechanism with two power pistons, was subjected to various heat inputs provided by torch burners, an electric band heater, and syngas from biomethanol production. The heat rejection was managed through both air and water cooling to compare their effectiveness. The primary objective was to measure the angular velocity and power output of the engine during its startup phase. The results indicated that the maximum angular velocity achieved was 225.9 rpm, with an average power output of 22.83 watts at a heater temperature of 445–455 °C. Water cooling system enhanced angular velocity and power output of the Stirling engine in all tests. However, results showed that water cooling system marginally improved the power output compared to the air cooling, the difference was not significant.