Looking for a paper solution, avoid the type written. An aluminum kettle weighing 2 kg holds2 litres of water and its heater elementconsumes a power of 2 kW. If 40 percentof the heat supplied is wasted, find thetime taken to bring the kettle of water toboiling point from an initial temperatureof 20°C. (Specific heat of aluminium =0.2 and Joule's equivalent = 4200 J/kcal.)

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time taken to bring the kettle of water to boiling point from an initial temperature

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.39P: The tip of a soldering iron consists of a 0.6-cm- diameter copper rod, 7.6 cm long. If the tip must...

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Question

Looking for a paper solution, avoid the type written.

An aluminum kettle weighing 2 kg holds
2 litres of water and its heater element
consumes a power of 2 kW. If 40 percent
of the heat supplied is wasted, find the
time taken to bring the kettle of water to
boiling point from an initial temperature
of 20°C. (Specific heat of aluminium =
0.2 and Joule's equivalent = 4200 J/kcal.)

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Step 1: Calculate the specific heat of aluminum in J/kg-C.

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Step 2: Calculate the mass of water and write down specific heat of water and its boiling point temperature.

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Step 3: Calculate the actual heat consumed by kettle water.

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