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单词 intensive variable
释义
intensive variable

Physics
  • A quantity in a macroscopic system that has a well defined value at every point inside the system and that remains (nearly) constant when the size of the system is increased. Examples of intensive variables are the pressure, temperature, density, specific heat capacity at constant volume, and viscosity. An intensive variable results when any extensive variable is divided by an arbitrary extensive variable such as the volume. A macroscopic system can be described by one extensive variable and a set of intensive variables.


Chemistry
  • A quantity in a macroscopic system that has a welldefined value at every point inside the system and that remains (nearly) constant when the size of the system is increased. Examples of intensive variables are the pressure, temperature, density, specific heat capacity at constant volume, and viscosity. An intensive variable results when any extensive variable is divided by an arbitrary extensive variable such as the volume. A macroscopic system can be described by one extensive variable and a set of intensive variables.


Chemical Engineering
  • A property of each phase in a mixture that is independent of the amount of material. It includes temperature, pressure, enthalpy, density, specific volume, specific heat capacity at constant volume, and mole fraction. For a multiphase mixture at equilibrium, both temperature and pressure are uniform throughout the mixture but the values for enthalpy and mole fraction are different for each phase. An extensive variable depends on the amount of material in the system such as volume, mass, and total energy.


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