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PROBLEM NO. 3 5 ChE A  Group 3 Abella, Kevin Michelle M. De Jesus, Maria Katrina T. Illao, Mariz A. Peña, Timothy John  Ytang, Ariane Karen
PROBLEM 3 ,[object Object]
[object Object]
SOLUTION ,[object Object],Saturated Steam: T o  = 220°C = 493 K b c  = $ 0.0035/kg Insulation: K =0.06 W/m-K a c  =  $ 200 m pipe length  • (100)(x) x = thickness of insulation  in meters Surrounding: T S  = 27°C 2” Sch. 40 steel pipe L = 250 m Set conditions: K F  =15% of initilal installed cost R pipe , R steam film , & R scale  = 0
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using MathCAD Dso = 4.254 cm Answer: Optimum economic thickness can’t be solved since the computed Dso < Do.
PROBLEM 9 ,[object Object]
 
PROBLEM 15 ,[object Object]
[object Object]

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5 Chea Group3

  • 1. PROBLEM NO. 3 5 ChE A Group 3 Abella, Kevin Michelle M. De Jesus, Maria Katrina T. Illao, Mariz A. Peña, Timothy John Ytang, Ariane Karen
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. Using MathCAD Dso = 4.254 cm Answer: Optimum economic thickness can’t be solved since the computed Dso < Do.
  • 7.
  • 8.  
  • 9.
  • 10.