Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
1Department of PhysicsHong Kong Baptist University
Experimental Demonstrations(Thermodynamics)
Physics Enhancement ProgrammeDr. M.H. CHAN
Department of Physics, HKBU
2Department of PhysicsHong Kong Baptist University
Seebeck Effect
• The Seebeck effect refers to the generation of potential difference due to a temperature gradient (different temperatures) between two dissimilar electrical conductors.– The process is reversible. – Allow conversion from heat to electricity, and conversion from electricity to the temperature gradient between two surfaces.
3Department of PhysicsHong Kong Baptist University
Peltier Heat Pump
Battery
Peltier Element
4Department of PhysicsHong Kong Baptist University
DemonstrationCopper and Aluminium
5Department of PhysicsHong Kong Baptist University
Demonstration: Generation of Thermoelectric Voltage
6Department of PhysicsHong Kong Baptist University
Demonstration: Thermoelectrics
7Department of PhysicsHong Kong Baptist University
Schematic Diagram of Thermoelectric Device
8Department of PhysicsHong Kong Baptist University
Applications and Demonstrations:Thermoelectric Devices
9Department of PhysicsHong Kong Baptist University
Body heat powered LED and Fan.
Waste water heat recovery to generate electricity.
10Department of PhysicsHong Kong Baptist University
Demo: Stirling Engine