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Question

List the disadvantages of thermal energy.


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Solution

Thermal energy:

  • Thermal energy is known as the internal energy present in a system in a state of thermodynamic equilibrium by virtue of its temperature.
  • Thermal energy cannot be converted into useful work as easily as the energy of systems that are not in states of thermodynamic equilibrium.
  • There are four combustibles for thermal energy i.e oil, natural gas, wood, and geothermal waste.

List of disadvantages of thermal energy:

  • The most severe disadvantage of thermal energy is that the thermal oxidation operates at 800-900°C compared with 250-350°C for the catalytic alternative.
  • The high operating temperature also refers to the that more energy must be added to the process as a supplemental fuel, compared to a comparable catalytic process which contributes to a higher operating cost of the unit.
  • Also, during the use of high operating temperature ,NO2 can be formed in the flame, which perhaps requires additional emission controls.
  • During the catalytic oxidation, the cost of the catalyst and its replacement due to premature deactivation increases the cost.
  • Thermal power plants depend on mostly coal, oil, or natural gas, which are all known to as limited supplying resources.

Hence, the above mentioned are a list of the disadvantages of thermal energy.


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