Quantum Stirling Engine with Bose-Einstein Condensate
Piksi Amanda Sari, Trengginas Eka Putra Sutantyo, Zulfi Abdullah

Theoretical Physics Laboratory, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Limau Manis, Padang, 25163, Indonesia

Abstract

This research investigates the endoreversible quantum Stirling engine using the Bose-Einstein Condensate (BEC) as a working medium trapped in generic law potential. The engine operates endoreversibly in order to capture a realistic condition, where the temperature of working medium depends on the heating and cooling strokes time. The Fourier conduction law is applied to govern the rate of heat transfer between the system and the thermal reservoir in finite time, whilst in isoenergetic strokes, an infinite-time is required to accomplish the thermal equilibrium. The results show that the condensed phase of BEC has the ability to enhance the efficiency of the engine, especially at temperature near absolute zero. In conclusion, by adjusting the temperature and volume ratio, performance can be optimized to achieve the higher efficiency and power output of the Stirling engine.

Keywords: Quantum Stirling Engine, Bose-Einstein Condensate, Generic Law Potential, Efficiency, Endoreversible

Topic: Theory, Nuclear, and Particle Physics