Are nuclear or chemical energy release thermodynamic processes?

In summary, the conversation discusses the relationship between the release of heat in nuclear reactions and burning oil, and how it affects the internal energy and entropy of the material. The question is raised about whether these processes can be considered thermodynamic processes, and it is determined that they cannot be accurately studied using equilibrium thermodynamics. The concept of entropy and its relationship to temperature is also discussed, with the conclusion that at temperature zero, entropy is not necessarily zero due to quantum disorder. An article is suggested for further clarification on the definitions of energy and entropy.
  • #1
fxdung
388
23
In process of releasing heat of nuclear reaction and burning oil, the internal energy of the material(that be burned) be contant if we prevent heat transfer to environment.The temperature of the material increase.How is entropy of the material varied(if we keep volume be constant)?If the entropy increase then we are leaded to wrong conclusion that temperature is zero(because temperature is equal derivative of internal energy respect to entropy)?Whether those processes are thermodynamics processes?
 
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  • #2
I think Thermodynamics based on postulate that: Exist a function of internal energy depend to volume and temperature.But here, nuclear and chemistry energy do not depend on both volume and temperature.So this process is not involved in Thermodynamics.Is that correct?
 
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  • #3
I search on web and see that nuclear and chemical energy are also internal energy,so please explain my question.

Entropy is the measure of the disorder of a system.There is a theorem saying that at temperature zero, then entropy is zero.But at temperature being zero, still having quantum disorder,so why entropy must be zero?
 
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  • #5
The process you are describing is out of equilibrium. You cannot use equilibrium thermodynamics to study it.
 

Related to Are nuclear or chemical energy release thermodynamic processes?

1. What is the difference between nuclear and chemical energy release?

Nuclear energy release involves splitting the nucleus of an atom, while chemical energy release involves breaking chemical bonds between atoms.

2. Which type of energy release is more efficient?

Nuclear energy release is generally more efficient than chemical energy release, as it releases significantly more energy per unit of mass.

3. Are nuclear and chemical energy release considered thermodynamic processes?

Yes, both nuclear and chemical energy release involve the conversion of energy from one form to another, which is a fundamental concept in thermodynamics.

4. Can nuclear and chemical energy release be harnessed for practical use?

Yes, both nuclear and chemical energy release can be harnessed for practical use, such as generating electricity or powering vehicles.

5. Are there any environmental concerns associated with nuclear and chemical energy release?

Yes, both nuclear and chemical energy release can have environmental impacts, such as air and water pollution, and the production of radioactive waste in the case of nuclear energy.

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