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free expansion

noun, Thermodynamics
1.
the expansion of a gas into an evacuated space without the transfer of heat or the performance of work.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for free expansion
  • Pipes shall be so installed as to permit free expansion and contraction without damage to joints or hangers.
  • Any restraint to the free expansion or contraction of the material will result in an apparent strain.
  • The construction of the setting around each blowoff pipe shall permit free expansion and contraction.
  • Pipes must be installed as to permit free expansion and contraction without damage to joints or hangers.

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