Chapter 7 Applications of Thermodynamic to Flow Processes

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Chapter 7Applications of Thermodynamic to Flow
Processes

• Duct flow of compessible fluids
• Pipe flow
• Nozzles
• Diffusers
• Throttling processes
• Turbines (Expanders)
• Compressors, pumps

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Applications of Thermodynamic to Flow Processes
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Example 1 (7.13)

• Propane at upstream conditions (T1 400 K, and
  P1 20 bar) is throttled to a downstream
  pressure of 1.2 bar. Use the Redlich/Kwong
  equation to estimate the downstream temperature
  and DS of propane.

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Solution
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• 0.152, Tc 369.8 K, Pc 42.48 bar
• Pr 20 / 42.48 0.471
• Tr 400 / 369.8 1.082
• Redlich/Kwong equation ? 0.08664, ?
  0.42748
• ? ( ? Pr / Tr ) 0.03771
• q ( ? / ? Tr1.5) 4.384

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