Correct term: thermal power & electrical power

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Discussion Overview

The discussion revolves around the terminology used to describe the power output of a radiator and a nuclear power plant, specifically whether to refer to the radiator's output as "Thermal Power Output" and the plant's output as "Electrical Power Output." The scope includes conceptual clarification and technical reasoning related to energy production and efficiency.

Discussion Character

  • Conceptual clarification, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that it is acceptable to refer to the radiator's output as "Thermal Power Output" and the nuclear plant's output as "Electrical Power Output."
  • Another participant mentions that an electric radiator might be rated based on the power it consumes rather than the power it outputs, expressing uncertainty about the implications of this distinction.
  • A different participant asserts that for an electric radiator, the output is equal to the input.
  • A later reply discusses the efficiency of converting thermal energy to electrical energy, noting that a thermal machine typically requires significantly more thermal energy than the electrical energy produced, with specific efficiency figures provided for different types of plants.
  • This participant also clarifies that for heating purposes, the efficiency is less critical, as a stove can operate at nearly 100% efficiency despite some losses.

Areas of Agreement / Disagreement

Participants express differing views on the terminology and the efficiency of energy conversion, indicating that multiple competing perspectives remain without a clear consensus.

Contextual Notes

The discussion includes assumptions about efficiency rates and the definitions of power output, which may vary based on context and specific applications.

_phillip
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Dear all,

This question might sound trivial but for weeks I am unsure about the correct answer:

1. Given there is a radiator. The radiator's performance is stated in [Watt].
2. Given there is a nuclear plant. The plant's performance is also stated in [Watt].

Is it correct English to call the first "Thermal Power Output" and the second "Electrical Power Output"?

Thank you very much!
Phillip
 
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Yes, or you can just say 'Power Output'.
 
Thanks a lot!
 
I'm not sure, but I think a radiator (at least an electric one) might be rated in the power it takes in, but not necessarily puts out...although I'm also not sure what the difference is.
 
For an electric radiator the output us equal to the input.
 
_phillip said:
Dear all,

This question might sound trivial but for weeks I am unsure about the correct answer:

1. Given there is a radiator. The radiator's performance is stated in [Watt].
2. Given there is a nuclear plant. The plant's performance is also stated in [Watt].

Is it correct English to call the first "Thermal Power Output" and the second "Electrical Power Output"?

Thank you very much!
Phillip

The point you make is interesting and sometimes confusing in (heated) debates about energy production.

Thermodynamics learns that if you want to convert heat into work (or electricity), you can only do this with a certain maximal efficiency. For "normal" working temperatures, this is about one third. (for high temperatures, this can be up to some 50% or even somewhat more).

So if you have a thermal machine (boiler + steam turbine say), you will need 3 times more thermal energy than you can hope to produce electrical energy.

A nuclear power plant of 1 GW electric will produce something like 3 GW thermal energy. (same for a coal plant).

However, if you want just heat, you do not have to pay that price: heat is heat. A stove can be almost 100% efficient (there are some losses through the chimney though).
 

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