Generating thermoelectric elements are materials that generate electricity using waste heat One part of the thermoelectric element is a high-tech material that attaches to the hot surface and makes the temperature difference by giving the difference in temperature to cool it.
Compared with existing power generation capacity of about 100 watts when a conventional photovoltaic plate is 1 meter x 50 cm A thermoelectric device can generate more than 100 watts in a 20 cm x 20 cm area at a high temperature, which is advantageous in that it occupies a smaller area than solar power generation Above all, there is no mechanical movement, so there is the advantage of silence and vibration free.
Therefore, there is no limit to the possibility of using the waste heat of automobile muffler to increase the efficiency of the vehicle by producing electric power, or the probe for the exploration of Mars.
However, when the thermoelectric element is used for power generation, the material to be applied depends on the thermoelectric metal depending on the temperature of the plate or surface to which it is attached.
Below is a diagram showing the efficiency curves for the generation of thermoelectric elements for low-temperature, medium-temperature and high-temperature power generation.
Using Temp |
300 ℃ | Size (mm) |
Open circuit voltage |
Suitable Resistance | Output Voltage (V) |
Output Current (A) |
Output watt (W) |
Heat Flux (watt/모듈) |
Unit HeatFlux (W / cm2) |
---|---|---|---|---|---|---|---|---|---|
200 ℃ | TEG-SUPER | 55x57 | 15 | 0.9 | 11 | 0.65 | 7.2 | 306 | 9.7 |
300 ℃ | TEG-5430 | 30x30 | 10.8 | 5.4 | 5.4 | 1 | 5.4 | 96 | 10.7 |
TEG-5435 | 35x35 | 10.8 | 5.4 | 5.4 | 1 | 5.4 | 94.7 | 7.7 | |
TEG-7540 | 40x40 | 13.4 | 5.7 | 6.7 | 1.12 | 7.5 | 137 | 8.6 | |
TEG-2155 | 55x55 | 14.4 | 2.4 | 7.2 | 3 | 21.6 | 365 | 13.2 | |
TEG-1755 | 55x55 | 17.7 | 4.4 | 8.8 | 2 | 17.6 | 301 | 9.6 | |
400 ℃ | TEG-2155-Pb | 55x55 | 9.2 | 0.97 | 4.6 | 4.7 | 21.6 | 310 | 10.2 |