Question 196: Thermodynamics & KTG

Question

The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should have

Accepted Answer

To convert a temperature difference into electrical energy effectively, the material in question should have low thermal conductivity and high electrical conductivity. Such materials are classified as thermoelectric materials.
A low thermal conductivity ensures that the material does not easily transfer heat, which is crucial for maintaining a significant temperature difference between its hot and cold sides. This helps in generating a greater voltage. Meanwhile, high electrical conductivity is essential for facilitating the efficient movement of electrons across the material when there is a temperature difference, leading to maximal energy conversion.
Therefore, a material that optimally harvests heat energy into electrical energy should embody these characteristics.

Answer

low thermal conductivity and high electrical conductivity

Answer

low thermal conductivity and low electrical conductivity

Answer

high thermal conductivity and high electrical conductivity

Answer

high thermal conductivity and low electrical conductivity

Thermodynamics & KTG

The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should have

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