m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min . During this time the temperature of the water rises from T₁ = 335 K to its boiling point and me = 176 g of water evaporates. How much of the electric energy used by the heater is transferred to the water during the heating? Please consider that produced energy can be obtained by the product of power and time, so E = P t. Please use for the specific enthalpy of evaporation h = 2260 kJ and heat capacity of water values cp = 4.1900 kgk What is the Percentage of electric energy transferred to water? EP %

m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min . During this time the temperature of the water rises from T₁ = 335 K to its boiling point and me = 176 g of water evaporates. How much of the electric energy used by the heater is transferred to the water during the heating? Please consider that produced energy can be obtained by the product of power and time, so E = P t. Please use for the specific enthalpy of evaporation h = 2260 kJ and heat capacity of water values cp = 4.1900 kgk What is the Percentage of electric energy transferred to water? EP %

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.60P: 1.60 Two electric resistance heaters with a 20 cm length and a 2 cm diameter are inserted into a...

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