Clarification on the scope of control masses

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SUMMARY

This discussion clarifies the classification of systems in thermodynamics, specifically regarding closed and isolated systems. It establishes that the International Space Station (ISS) operates as an open system in the long term due to external influences like radiation. The impact of nuclear radiation on control volumes is debated, emphasizing the importance of sensitivity in mass measurement when determining system boundaries.

PREREQUISITES
  • Understanding of thermodynamic systems, including closed and isolated systems
  • Familiarity with control volumes in thermodynamics
  • Knowledge of nuclear radiation and its effects on systems
  • Basic principles of mass measurement and its sensitivity
NEXT STEPS
  • Research the differences between closed and open systems in thermodynamics
  • Study the concept of control volumes and their applications in engineering
  • Explore the effects of nuclear radiation on thermodynamic systems
  • Learn about the sensitivity of mass measurement techniques in various environments
USEFUL FOR

This discussion is beneficial for thermodynamics students, engineers working with control volumes, and researchers studying the effects of radiation on systems.

Panderson
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I understand that Thermodynamics studies systems at the macroscopic level, but I am still somewhat confused with respect to closed/isolated systems. Does nuclear radiation still count as a control volume? Our instructor asked if the ISS was technically a closed/open system. Would the constant flux of radiation even be considered?
 
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Depends. Long run, open system. Short term? Maybe, maybe not. How sensitive is your mass measurement?
 

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