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An egg with mean diameter of 4 cm and initially at 25 degree Celsius is placed in an open boiling water container for 4 minutes and found to be boiled at a particular level. For how long should a similar egg boil at the same level, when refrigerator temperature is 5 degree Celsius? Use lumped parameter theory and assume following properties of egg k = 12 W/m K h = 125 W/m2 K c = 2 k J/kg K p = 1250 kg/m3

An egg with mean diameter of 4 cm and initially at 25 degree Celsius is placed in an open boiling water container for 4 minutes and found to be boiled at a particular level. For how long should a similar egg boil at the same level, when refrigerator temperature is 5 degree Celsius? Use lumped parameter theory and assume following properties of egg k = 12 W/m K h = 125 W/m2 K c = 2 k J/kg K p = 1250 kg/m3 Correct Answer 271.49 seconds

T t – T INFINITY/T i – T INFINITY = e – b T.

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