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To serve a baked potato as a side dish, we want it to be at a uniform temperature of 101 °C. To achieve this, we will bake the potato in a 170 °C oven, where convection occurs with h 25 W/m2K. Before we place it in the oven, the potato is at a uniform temperature of 25 °C. Immediately after taking it out of the oven, we will wrap the potato in towels to insulate it completely. We will wait until the potato temperature becomes uniform to serve it. 1. How long should the potato be in the oven? 2. What is the temperature at the center of the potato when it is taken out of the oven? 3. How much thermal energy is transferred to the potato in the oven? The potato will be modeled as a perfect sphere with diameter 8 cm, and k = 0.6 W/m K, p =1100 kg/m', C, = 3900 J/kg K.

To serve a baked potato as a side dish, we want it to be at a uniform temperature of 101 °C. To achieve this, we will bake the potato in a 170 °C oven, where convection occurs with h 25 W/m2K. Before we place it in the oven, the potato is at a uniform temperature of 25 °C. Immediately after taking it out of the oven, we will wrap the potato in towels to insulate it completely. We will wait until the potato temperature becomes uniform to serve it. 1. How long should the potato be in the oven? 2. What is the temperature at the center of the potato when it is taken out of the oven? 3. How much thermal energy is transferred to the potato in the oven? The potato will be modeled as a perfect sphere with diameter 8 cm, and k = 0.6 W/m K, p =1100 kg/m', C, = 3900 J/kg K.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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To serve a baked potato as a side dish, we want it to be at a uniform temperature of 101 °C. To achieve this, we will bake the potato in a 170 °C oven, where convection occurs with h 25 W/m2K. Before we place it in the oven, the potato is at a uniform temperature of 25 °C. Immediately after taking it out of the oven, we will wrap the potato in towels to insulate it completely. We will wait until the potato temperature becomes uniform to serve it. 1. How long should the potato be in the oven? 2. What is the temperature at the center of the potato when it is taken out of the oven? 3. How much thermal energy is transferred to the potato in the oven? The potato will be modeled as a perfect sphere with diameter 8 cm, and k = 0.6 W/m K, p =1100 kg/m', C, = 3900 J/kg K.
Transcribed Image Text:To serve a baked potato as a side dish, we want it to be at a uniform temperature of 101 °C. To achieve this, we will bake the potato in a 170 °C oven, where convection occurs with h 25 W/m2K. Before we place it in the oven, the potato is at a uniform temperature of 25 °C. Immediately after taking it out of the oven, we will wrap the potato in towels to insulate it completely. We will wait until the potato temperature becomes uniform to serve it. 1. How long should the potato be in the oven? 2. What is the temperature at the center of the potato when it is taken out of the oven? 3. How much thermal energy is transferred to the potato in the oven? The potato will be modeled as a perfect sphere with diameter 8 cm, and k = 0.6 W/m K, p =1100 kg/m', C, = 3900 J/kg K.
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