Suppose that the laptop of Prob. 2.16 is placed in an insulating briefcase with a fully charged

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Suppose that the laptop of Prob. 2.16 is placed in an insulating briefcase with a fully charged battery, but it does not go into “sleep” mode, and the battery discharges as if the laptop were in use. If no heat leaves the briefcase, the heat capacity of the briefcase itself is negligible, and the laptop has a mass of 2.3 kg and an average specific heat of 0.8 kJ⋅kg−1⋅°C−1, estimate the temperature of the laptop after the battery has fully discharged.

Problem 2.16

The battery in a laptop computer supplies 11.1 V and has a capacity of 56 W ⋅ h. In ordinary use, it is discharged after 4 hours. What is the average current drawn by the laptop, and what is the average rate of heat dissipation from it? You may assume that the temperature of the computer remains constant.

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Related Book For  answer-question

Introduction To Chemical Engineering Thermodynamics

ISBN: 9781259696527

8th Edition

Authors: J.M. Smith, Hendrick Van Ness, Michael Abbott, Mark Swihart

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