A thermoacoustically-driven liquid metal magnetohydrodynamic generation system with a thermal efficiency of 11%
Abstract
Thermoacoustically-driven liquid metal magnetohydrodynamic generator (TLMHDG) is promising for reliable power generation, but its potential is limited by poor thermal efficiency due to improper acoustic matching. Here we developed an efficient TLMHDG by integrating a liquid metal magnetohydrodynamic generator into the linear gaseous resonator of a Backhaus-Swift engine, where the acoustic field is relatively robust. In experiments, a thermal efficiency of 11.0% and an average electrical power output of 13.5 W are achieved, at a heating temperature of 885 K. These results show an improvement of almost one order of magnitude in thermal efficiency and a onefold increase in power output compared to previously reported. This work underscores the potential of TLMHDG for efficient and reliable power generation.
Fields of Study & Subjects
Advanced Thermodynamic Systems and Engines
Thermal Radiation and Cooling Technologies
Plasma and Flow Control in Aerodynamics
Publication details
- Journal / source
- The Innovation Energy
- Publisher
- Innovation Press Co., Limited
- Volume
- 3
- Issue
- 1
- Pages
- 100139–100139
- Publication date
- 1 January 2026
- Language
- EN