**Unit 1: Thermodynamics, Mechanics, and Energy Conversion**
*In this course, you will need to rely heavily upon material from
previous work. For convenience, this unit reviews fundamental topics in
thermodynamics and fluid mechanics that you will find useful in
subsequent units.*

**Unit 1 Time Advisory**

This unit should take you 13 hours to complete

☐ Introductory Review: 3 hours

☐ Subunit 1.1: 3 hours

☐ Subunit 1.2: 2 hours

☐ Subunit 1.3: 3 hours

☐ Subunit 1.4: 1 hours

☐ End of Unit Self-Assessment: 1 hour

**Unit1 Learning Outcomes**

Upon successful completion of this unit, the student will be able to:

- Use scientific notation and engineering units for quantities concerning fluid flow and energy transfer.
- Apply and explain the significance of conservation laws for momentum, mass, and energy.
- Recognize and interpret the significance of several thermodynamic cycles and their descriptive parameters.
Apply and explain the significance of dimensionless groups.

**Reading: MIT: Professor Zoltan Spakovszky's “Prelude: Introduction and Review of Unified Engineering Thermodynamics”**Link: MIT: Professor Zoltan Spakovszky's “Prelude: Introduction and Review of Unified Engineering Thermodynamics” (PDF)

Also available in:Instructions: Click on the “PDF” hyperlink listed for Section 0 after the title “Prelude: Introduction and Review of Unified Engineering Thermodynamics” to download the text. Please read the entire PDF (18 pages total) for a review of thermodynamic concepts used in this section.

Terms of Use: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License. It is attributed to Zoltan Spakovszky and can be found in its original form here.

**1.1 Definitions and Units**
**1.1.1 Fundamental Units**
- **Reading: University of North Carolina at Chapel Hill: Russ
Rowletts’ “Base Units of the International System”**
Link: University of North Carolina at Chapel Hill: Russ Rowletts’
“Base Units of the International
System” (HTML)

Instructions: Read the definitions of the seven base units for the
SI system. Speculate on how these units might be combined to form
derived units.

Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.

**1.1.2 First Law of Thermodynamics and State Variables**
- **Reading: Georgia State University’s “First Law” and “State
Variables”**
Link: Georgia State University’s “First
Law”
(HTML) and “State
Variables”
(HTML)

Instructions: Read these two webpages. You may also find it useful
to review other sections of the GSU’s Hyperphysics
pages (HTML).
For example, you may review the definitions of the state variables
enthalpy, internal energy, and entropy. To access these
definitions, click on the hyperlink for each term in the Index on
the right-hand side of the webpage.

Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.

**1.1.3 Derived Quantities**
- **Reading: Georgia State University’s “Hyperphysics Pages”**
Links: Georgia State University’s “Hyperphysics
Pages”
(HTML)

Instructions: Click on quantities of interest in the right-hand
index for the pages. Please review the concise definitions of terms
such as momentum, velocity, force, work, energy, and power. Make
sure that you understand both the physical meaning of the quantities
and the units of that quantity. For example, velocity is a vector
indicating the speed and direction of movement with units of
length/time. Note that a very large number of units can be derived
from the fundamental units.

Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.

**1.2 Conservation Laws**
**1.2.1 Control Volume Approach**
- **Reading: WikiBooks’ Fluid Mechanics: “Chapter 3”**
Link: WikiBooks’ *Fluid Mechanics*: “Chapter
3”
(PDF)

Instructions: Read only Section 1 of this chapter. This material
is rather dense, so you may wish to spend some time thinking about
it and drawing pictures.

Note that much of engineering analysis is concerned with the
consequences of the conservation of mass, momentum, and energy. You
might consider an engineer to be an accountant of such quantities;
the engineer considers the generation, accumulation or depletion,
and motion from place to place of such quantities. This accounting
may be done for finite containers or volumes or differential
(infinitesimal) volume elements. This material should be a review
for you.

Terms of Use: The article above is released under a Creative
Commons Attribution-Share-Alike License
3.0 (HTML). You
can find the original Wikibooks version of this article
here (HTML).

**1.2.2 Differential Forms for Energy, Momentum, and Mass Conservation**
- **Reading: WikiBooks’ Fluid Mechanics: “Chapter 3”**
Link: WikiBooks’ *Fluid Mechanics*: “Chapter
3”
(PDF)

Instructions: Read only Section 2 of this chapter. As noted
earlier, this material is rather dense; take your time working
through it.

Terms of Use: The article above is released under a Creative
Commons Attribution-Share-Alike License
3.0 (HTML). You
can find the original Wikibooks version of this article
here (HTML).

**1.3 Thermodynamic Cycles**
**1.3.1 Definition**
- **Reading: Wikipedia’s “Thermodynamic Cycle”**
Link: Wikipedia’s “Thermodynamic
Cycle”
(PDF)

Instructions: Read the entire text and attempt the following
activity. Write down a concise definition of a thermodynamic cycle
and categorize the various different thermodynamic cycles.

Terms of Use: The article above is released under a Creative
Commons Attribution-Share-Alike License
3.0 (HTML). You
can find the original Wikipedia version of this article
here (HTML).

**Reading: MIT: Professor Zoltan Spakovszky’s “Thermal Energy: Introduction and Review of Engineering Thermodynamics” Lecture Notes**Link: MIT: Professor Zoltan Spakovszky’s “Thermal Energy: Introduction and Review of Engineering Thermodynamics” Lecture Notes 1a, 2a, and 2b. (PDF)

Also available in:

EPUB 1a, 2a, 2bInstructions: Please click on the “PDF” hyperlink after each title for sections 1a, 2a, and 2b. You may skim through this material, but attempt to find reference to each of the power cycles listed below in sections 1.3.2-1.3.6.

Terms of Use: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License. It is attributed to Zoltan Spakovszky and can be found in its original form here.

**1.3.2 Carnot Cycle**
**1.3.3 Rankine Cycle**
**1.3.4 Brayton Cycle**
**1.3.5 Otto Cycle**
**1.3.6 Diesel Cycle**
**1.4 Dimensionless Groups**
- **Reading: EnggCylopedia’s “Dimensionless Groups”**
Link: EnggCyclopedia’s “Dimensionless
Groups”
(HTML)

Instructions: For each of the groups listed in subunits 1.4.1-1.4.4
(Re, Pr, Nu, and Gr), find and read quantitative and qualitative
definitions of the group. Many dimensionless groups appear in fluid
mechanics and heat–transfer problems. Several of these are
tabulated in this resource. Please pay particular attention to the
Reynolds number, the Prandtl number, the Grashof number, and the
Nusselt number. Please note that this material covers information
for subunits 1.4.1-1.4.4.

Terms of Use: Please respect the copyright and terms of use
displayed on the webpage above.

**1.4.1 Re**
**1.4.2 Pr**
**1.4.3 Nu**
**1.4.4 Gr**
**Unit 1 Assessment**
- **Assessment: The Saylor Foundation’s “ME303: Unit 1 Quiz"**
Link: The Saylor Foundation’s “ME303: Unit 1
Quiz”

Instructions: Please complete the linked assessment.

You must be logged into your Saylor Foundation School account in
order to access this quiz. If you do not yet have an account, you
will be able to create one, free of charge, after clicking the
link.