Finding how much heat released by evaporation of water

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SUMMARY

The discussion centers on the heat dynamics involved in the evaporation of water, specifically addressing the misconception that evaporation releases heat. Participants clarify that evaporation requires energy absorption, and thus, heat is drawn from the surrounding environment, including the human body. The mention of "120W" refers to the rate of heat transfer from the body during this process. Understanding these principles is crucial for accurately interpreting thermodynamic interactions in biological systems.

PREREQUISITES
  • Basic understanding of thermodynamics
  • Knowledge of heat transfer concepts
  • Familiarity with the process of evaporation
  • Understanding of energy absorption in phase changes
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  • Research the principles of thermodynamics in biological systems
  • Study the heat transfer mechanisms during phase changes
  • Explore the concept of latent heat of vaporization
  • Investigate the effects of evaporation on human body temperature regulation
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Students in physics or biology, researchers in thermodynamics, and professionals in fields related to environmental science or human physiology will benefit from this discussion.

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Dose anybody please know where they got the 120W from?

Many thanks!
 
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There must be more context to the question.
 
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haruspex said:
There must be more context to the question.
Thank you for your reply @haruspex!

I'm very sorry, but somehow, I missed the slide before. I think I understand where they got the 120W from now.

Thank you for your help!
 
What releases the heat? The water needs to absorb energy in order to evaporate. Evaporation does not release heat.
 
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nasu said:
What releases the heat? The water needs to absorb energy in order to evaporate. Evaporation does not release heat.
Thank you for your reply @nasu!

The question was about the heat released from the human body I recall. So I think the water absorbs the heat from the human.

Many thanks!
 

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