A 2kW stainless-steel electrical kettle with capacity 2 liters is used to obtain steam from tap water. The ambient temperature of the water is 20°C, heat of vaporization of water is 2256 kJ/kg and specific heat coefficient of water is 4287 J/kg°C. Thermal resistance of the kettle is 0.1°C/W. a. How long it will the water to reach the boiling temperature? b. How long it will take to obtain 500 g steam?

A 2kW stainless-steel electrical kettle with capacity 2 liters is used to obtain steam from tap water. The ambient temperature of the water is 20°C, heat of vaporization of water is 2256 kJ/kg and specific heat coefficient of water is 4287 J/kg°C. Thermal resistance of the kettle is 0.1°C/W. a. How long it will the water to reach the boiling temperature? b. How long it will take to obtain 500 g steam?

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.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.34P

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