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Summary
Summary
This study presents a 3D model to simulate the performance of thermoelectric generators when cooled passively by natural convection. It enables prediction of the complete temperature and voltage distribution through them. The model is acceptably accurate and requires reasonable computational power.
This model is used to study the impact of varying the vertical pitch distance between the modules of the TEGs when mounted on a vertical chimney. Also, the impact of the chimney’s tilt angle caused by its convergent section. After that, the impact of using heat spreaders on the cold side of the chimney is studied. Finally, a new design of conventional heat sinks is proposed to improve the performance of the upper modules of the TEG.
Also, this study investigated the performance of the TEG under different active cooling systems. An experimental test rig was built to compare the performance of the liquid-cooling system with the heat pipes’ system. An important conclusion is that the liquid cooling system has higher net output power compared to the heat pipes’ system.
A 3D model is created in ANSYS Mechanical. It is capable of predicting the performance with high accuracy. Results are validated with experimental data
A 3D model is created in ANSYS Mechanical. It is capable of predicting the performance with high accuracy. Results are validated with experimental data
A new heat sink design was proposed and its impact on the TEG performance was investigated.
A new heat sink design was proposed and its impact on the TEG performance was investigated.
Heat transfer by convection from the heat sinks, and the complete temperature distribution
Temperature distribution in the heat sinks, and comparing it to the cases of using heat spreaders and using the modified heat sinks with flaps
Velocity vectors surrounding the heat sinks at different configurations - Natural convection
Voltage distribution inside the TEG at different configurations
Experimental investigation of two active cooling systems when used with TEG
Experimental investigation of two active cooling systems when used with TEG
Experiment layout
Experimental setup
Heat pipes system
Water cooling system
Net output power per unit area for different tested active cooling systems
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