The Thermal Generator comprises a Peltier/Seebeck element mounted on a large heat sink. The Thermal Generator can be used in two ways:
When used as a Seebeck element the device can produce a voltage if one face is warmed and the other cooled.
When used as a Peltier element a temperature gradient is produced across the element if a voltage is applied to it. The unit has been designed such that when a positive voltage is applied to the red terminal the top surface of the element becomes cool and the bottom surface hot. The heat sink removes this heat.
By sitting a beaker of boiling water on top of the element a voltage is produced which is large enough to operate the Solar Motor.
The specification of the Peltier/Seebeck Element is:
• Size: 30 x 30 x 4.7mm
• Maximum cooling performance: 17W
• Maximum temperature difference between faces: 67°C
• Maximum voltage: 8V d.c.
• Maximum current: 3.5A
• Maximum working temperature: 70 - 80°C
• Internal resistance: 1R8Ω