Answer:
U = 129.053 KJ/m².h
Explanation:
overall heat transfer coefficient (U):
U = (<em>m</em>Cp(ToutH2O - TinH2O))/[A((ToutAir - TinH2O)-(TinAir - ToutH2O))/(Ln(ToutAir - TinH2O)/(TinAir - ToutH2O))]
∴ A = 925 m²
H2O:
∴ mass flow H2O (<em>m</em>) = 45500 Kg/h
∴ Cp H2O = 4186 J/Kg°C
∴ Tin = 80°C
∴ Tout = 150°C
Air:
∴ Tin = 350°C
∴ Tout = 175°C
⇒ U = ((45500Kg/h)(4186J/Kg°C)(150-80))/(925m²)[((175-80)-(350-150))Ln((175-80)/(350-150))]
⇒ U = (1.333 E10 J/h)/(925m²)[(-150)Ln(0.475)]
⇒ U = 129052.73 J/m².h = 129.053 KJ/m².h
Answer:
an alcohol is a Hydroxyl group due to the OH~ that is associated with it's molecules
Answer:
I hope this helps
Explanation:
Lewis symbols, which are also known as Lewis dot diagrams or electron dot diagrams, are diagrams that represent the valence electrons of an atom. Lewis structures, also known as Lewis dot structures or electron dot structures, are diagrams that represent the valence electrons of atoms within a molecule.
