Objectives

Introduce the concept of energy and define its various forms.
Discuss the nature of internal energy.
Define the concept of heat and the terminology associated with energy transfer by heat.
Discuss the three mechanisms of heat transfer: conduction, convection, and radiation.
Define the concept of work, including electrical work and several forms of mechanical work.
Introduce the first law of thermodynamics, energy balances, and mechanisms of energy transfer to or from a system.
Determine that a fluid flowing across a control surface of a control volume carries energy across the control surface in addition to any energy transfer across the control surface that may be in the form of heat and/or work.
Define energy conversion efficiencies.
Discuss the implications of energy conversion on the environment.

Readings/Activities/Assignments

For this week, read chapter 2 (pages 51-97). Pay special attention to sections 2-6 and 2-7.

Watch all the videos in this module.

Finish LS1, LS2 and A12 and submit them through Connect - McGraw Hill.

Participate in class and ask questions. All questions are welcome!

Module Overview

If we take the entire room—including the air and the refrigerator (or fan)—as the system, which is an adiabatic closed system since the room is well-sealed and well-insulated, the only energy interaction involved is the electrical energy crossing the system boundary and entering the room.
As a result of the conversion of electric energy consumed by the device to heat, the room temperature will rise.

A refrigerator operating with its door open in a well-sealed and well-insulated room

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A fan running in a well-sealed and well-insulated room will raise the temperature of air in the room.

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Copyrights

All the material copied into this module are excerpts from McGraw Hill Publishing Company Slides. This includes all the diagrams, pictures, graphs and tables. Permission by the Publishing company has been granted. No material from this module should be copied, or reproduced in any form physically or electronically without the permission from the Publisher. The videos are links to YouTube.