Power-Optimized Sinusoidal Piston Motion and Its Performance Gain for an Alpha-Type Stirling Engine with Limited Regeneration

Energies

Karsten Schwalbe¹  Mathias Scheunert¹  KarlHeinz Hoffmann¹  Robin Masser¹  Abdellah Khodja¹  Raphael Paul¹  Andreas Fischer¹ 

[1] Institut für Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany;

关键词: piston motion optimization;    endoreversible thermodynamics;    stirling engine;    irreversibility;    power;    efficiency;   

DOI  :  10.3390/en13174564

来源: DOAJ

【 摘 要 】

The recuperation of otherwise lost waste heat provides a formidable way to decrease the primary energy consumption of many technical systems. A possible route to achieve that goal is through the use of Stirling engines, which have shown to be reliable and efficient devices. One can increase their performance by optimizing the piston motion. Here, it is investigated to which extent the cycle averaged power output can be increased by using a special class of adjustable sinusoidal motions (the AS class). In particular the influence of the regeneration effectiveness on the piston motion is examined. It turns out that with the optimized piston motion one can achieve performance gains for the power output of up to 50 depending on the loss mechanisms involved. A remarkable result is that the power output does not depend strongly on the limitations of the regenerator, in fact—depending on the loss terms—the influence of the regenerator practically vanishes.

【 授权许可】

Unknown