Homework_1_Solution

Homework_1_Solution - MCEN 3022, Spring 2008-Homework 1 Due...

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MCEN 3022, Spring 2008—Homework 1 Due Friday 25 January 2008 Reading pp. 1–35, 40–46. 1.1 Thermodynamics, Heat Transfer, and Heat Çengel 1.2C What is the driving force for (a) heat transfer, Temperature Difference. Heat is transferred in the direction of decreasing temperature. (b) electric current flow Voltage Difference. Electric current travels in the direction of decreasing voltage. (c) fluid flow? Pressure Difference. Fluid flows in the direction of decreasing pressure. Çengel 1.9C What are the mechanisms of energy transfer to a closed system? How is heat transfer distinguished from the other forms of energy? Heat transfer, mass transfer, and work are the mechanisms of energy transfer to a closed system. An energy interaction is heat transfer if its driving force is a temperature difference. Otherwise, it is not. Çengel 1.10C How are heat, internal energy, and thermal energy related to each other? Heat is the widely accepted term for thermal energy.
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This note was uploaded on 03/24/2008 for the course MCEN 3022 taught by Professor Gustavojoseph during the Spring '08 term at Colorado.

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Homework_1_Solution - MCEN 3022, Spring 2008-Homework 1 Due...

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