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Low-grade energy: Based on the thermodynamic concepts, an energy source can be called as high-grade or low-grade, depending the ease with which it can be converted into other forms. Thus electrical energy is called a high-grade energy, as it is very easy to convert almost all of it into other energy forms such as thermal energy (say by using an electrical heater). Whereas, it is not possible to convert thermal energy completely into electrical energy (typical efficiencies of thermal power plants are around 30 percent), hence thermal energy is called a low-grade energy. Naturally, high-grade energy sources are more expensive compared to low-grade energy sources.

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4mo ago

Low-grade energy has lower quality and is less concentrated, such as heat from the sun or ambient room temperature. High-grade energy is more concentrated and of higher quality, like electricity or chemical energy stored in fuel. High-grade energy can perform more work and is more desirable for many applications.

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Q: What is difference between low grade energy high grade energy?
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