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POWER GENERATING MODULES
- A thermoelectric power generating module is a miniature power generator producing DC power. The principle behind this is a phenomenon called the "Seebeck Effect" discovered by Thomas Johann Seebeck. He discovered that when a temperature difference was applied to the two junctions of the Peltier circuit, a direct current voltage was generated in the circuit. Therefore, any cooling/heating modules can become also power generating modules. Since both Peltier and Seebeck Effects are irreversible phenomena, however, electric power generating as a result of the temperature difference is much smaller than the power input to obtain the same temperature difference.
Modern thermoelectric power generating modules utilize still bismuth telluride up to temperature of about 250°C. Beyond 400°C, lead telluride is used.
HTRD has been collaborating with the foremost manufacturers in the world including those in the former Soviet Union for supplying thermoelectric modules which are the best in quality and yet the most reasonable in price.
Currently, the maximum temperature at which continuous operation is possible ranges from 220 to 280°C. One of the power generating modules available is listed in TABLE I P
The following power generating modules available are listed in TABLE I P
TABLE I P
Power Generating Modules
|
Model No. |
Th (°C) |
Tc (°C) |
I. (AMP) |
V. ( Volt ) |
P.( Watt ) |
Dimension (mm) |
|
PGM-31-31-2.8 |
280 |
50 |
3.5 |
1.0 |
3.5 |
40x40x6 |
|
PGM-32-110 |
220 |
25 |
4.2 |
4.3 |
18 |
62x62x4 |