Thermodynamics For Dummies

Thermodynamics For Dummies

Mike Pauken

Language: English

Pages: 384

ISBN: 1118002911

Format: PDF / Kindle (mobi) / ePub

Thermodynamics For Dummies

Mike Pauken

Language: English

Pages: 384

ISBN: 1118002911

Format: PDF / Kindle (mobi) / ePub

Take some heat off the complexity of thermodynamics

Does the mere thought of thermodynamics make you sweat? It doesn't have to! This hands-on guide helps you score your highest in a thermodynamics course by offering easily understood, plain-English explanations of how energy is used in things like automobiles, airplanes, air conditioners, and electric power plants.

  • Thermodynamics 101 — take a look at some examples of both natural and man-made thermodynamic systems and get a handle on how energy can be used to perform work

  • Turn up the heat — discover how to use the first and second laws of thermodynamics to determine (and improve upon) the efficiency of machines

  • Oh, behave — get the 411 on how gases behave and relate to one another in different situations, from ideal-gas laws to real gases

  • Burn with desire — find out everything you need to know about conserving mass and energy in combustion processes

Open the book and find:

  • The laws of thermodynamics

  • Important properties and their relationships

  • The lowdown on solids, liquids, and gases

  • How work and heat go handin hand

  • The cycles that power thermodynamic processes

  • Chemical mixtures and reactions

  • Ten pioneers in thermodynamics

  • Real-world applications of thermodynamic laws and concepts

Learn to:

  • Master the concepts and principles of thermodynamics

  • Develop the problem-solving skills used by professional engineers

  • Ace your thermodynamics course

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air conditioning, and ventilating purposes. Lastly, you calculate how much energy you can get out of fuel in a combustion reaction to power your jet, your race car, or your lawn mower. If you want to sell jet engines to an aircraft manufacturer, you have to show that your engine burns fuel efficiently. To build a jet engine, you need to know how much energy a combustion reaction adds to an engine and how much the air in the engine heats up as a result of the combustion. To figure out the latter,

noodles for lunch, you don’t just let it sit on the table and expect the noodles to cook on their own. Even though the table may have several kilojoules of energy because it has a certain mass and a certain temperature, the quality of the energy isn’t sufficient to cook the noodles. The quality of the energy of the table, room, and bowl of soup are all the same, so no energy can be exchanged between them. If you let a bowl of hot noodles sit on the table, it cools off. Energy flows in a certain

the units of work are kilojoules, the force is in kilonewtons and the distance is in meters. One kilojoule equals 1 kilonewton-meter. The capital letter W indicates the total work; the lowercase letter w indicates work per unit mass with the units of kilojoules per kilogram. Power is the amount of work per unit of time. Sometimes power is designated with the letter P, but this can be confused with pressure, so often W with an over-dot ( ) is used as the symbol for the rate at which work is done

, using Table A-1 in the appendix. u1 = 213 kJ/kg u2 = 2,664 kJ/kg 5. Calculate the mass (m) of the air in the cylinder using the ideal-gaslaw equation. 6. Calculate the amount of heat added (Q) to the cylinder during the process, using the energy equation: Q = W + m(u2 – u1) Q = 2.7 kJ + (3.51 × 10–3 kg)(2,664 – 213) kJ/kg = 11.3 kJ Alternatively, you can use constant-volume specific heat and temperature in place of internal energy to find the heat transfer of the system. Chapter 5: Using the

in the metric system, because it’s less confusing than the system of feet, inches, pounds, and so on that we use in the U.S. ✓ I use boldface for velocity ( V ) and italics for total volume (V ) to distinguish between these two variables. ✓ I also use boldface to denote the action parts of numbered steps and to highlight key words or phrases in bulleted lists. What You’re Not to Read If you want to read this book cover-to-cover, that’s up to you. But if you just want to get an explanation of

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