ENGR 260 Sections 5'2

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ENGR 260Sections 5.2
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Flow Work
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Total Energy of a Fluid
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Total Energy of a Flowing Fluid
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Energy Transport by Mass
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Example 1

• Steam is leaving a pressure cooker whose
  operating pressure is 30 psia. It is observed
  the amount of liquid in the cooker has decreased
  by 0.4 gal in 45 minutes. The exit opening is
  found to be 0.15 in2.
• Determine
• Mass flow rate of the steam (lb/s)
• The exit velocity (ft/s)
• Flow energy of the steam leaving the cooker
  (BTU/lb)
• The rate at which energy is leaving the cooker
  (BTU/min)