An egg, which for the purposes of this problem can be assumed to be a 5-cm-diameter sphere
Question:
An egg, which for the purposes of this problem can be assumed to be a 5-cm-diameter sphere having the thermal properties of water, is initially at a temperature of 4?C. It is immersed in boiling water at 100?C for 15 min. The heat transfer coefficient from the water to the egg may be assumed to be 1700 W/(m2 K). What is the temperature of the egg center at the end of the cooking period?GIVENAn egg is immersed in boiling waterInitial temperature (To) = 4?CTemperature of boiling water (T??) = 100?CTime that the egg is in the water (t) = 15 min. = 900 sThe heat transfer coefficient (hc) = 1700 W/(m2 K)ASSUMPTIONSThe egg is a sphere of diameter (D) = 5 cm = 0.05 mThe egg has the thermal properties of water (From Appendix 2, Table 13)Thermal conductivity (k) = 0.682 W/(m K)Density (ρ) = 958.4 kg/m3Specific Heat (c) = 4211 J/(kgK)
Step by Step Answer:
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn