Problem 1 - Specific heat of solid A small hot iron block with mass of 0.5 kg initially at 200°C is immersed into a very large tank of saturated liquid nitrogen bath at 77 K under one atmospheric pressure. (a) What is the final temperature of the iron block after sufficiently long time? (b) What is the amount of heat transfer which the iron block gives out during the process? Use the specific heat of iron at room temperature from the Property Tables. (c) How much liquid nitrogen is vaporized during the process? Note that the specific enthalpy of evaporation of nitrogen (hg) is 198.8 kJ/kg.

Problem 1 - Specific heat of solid A small hot iron block with mass of 0.5 kg initially at 200°C is immersed into a very large tank of saturated liquid nitrogen bath at 77 K under one atmospheric pressure. (a) What is the final temperature of the iron block after sufficiently long time? (b) What is the amount of heat transfer which the iron block gives out during the process? Use the specific heat of iron at room temperature from the Property Tables. (c) How much liquid nitrogen is vaporized during the process? Note that the specific enthalpy of evaporation of nitrogen (hg) is 198.8 kJ/kg.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.26P

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