Unit 4 - Gas Laws I

Air Conditioning Fundamentals: 4-Gas Laws I

The description of gas laws that govern the behavior of the refrigerant used in an air conditioning system, the contributions of well known scientists such as Robert Boyle, Jacques Charles and John Dalton in the creation of these laws

Learning Outcome:

Upon completion of this module you will be able to:

1. Name the three men who established fundamental gas laws that govern the actions and reactions of refrigerants.
2. Explain the concepts of Temperature, Pressure, and Volume.
3. State Charles’ Law for a constant volume process, and use it to solve problems involving gases.
4. State Charles’ Law for a constant pressure process, and use it to solve problems involving gases.
5. State Boyle’s Law
6. Explain how Boyle’s Law can be used to solve problems involving gases.
7. Use the general gas law to solve problems involving gases.

• Topic Introduction and Objectives
• The Works of Boyle, Charles, and Dalton
• Temperature Conversions
• Check-Point Question: Charles’, Boyle’s and Dalton’s Law
• Pressure and Absolute Pressure
• Pressure Conversions
• Calculating Atmospheric Pressure, and the Unit of Pressure
• Volume: Water in a Container
• Volume: Gas in a Container
• Check-Point Question: Temperature, Pressure and Volume
• Topic Summary

• Topic Introduction and Objectives
• Charles’ Law for a Constant Volume Process
• Calculating Pressure at Constant Volume
• What the Calculations Mean
• Charles’ Law for a Constant Pressure Process
• Calculating Volume at Constant Pressure
• What the Calculations Mean
• Check-Point Question: Charles’ Law
• Topic Summary

• Topic Introduction and Objectives
• The Inverse Proportion Between Pressure and Volume
• Calculating Absolute Pressure: Sample Problem I
• Calculating Absolute Pressure: Sample Problem II
• Calculating Absolute Pressure: Sample Problem III
• Check-Point Question: Boyle’s Law
• Topic Summary

• Topic Introduction and Objectives
• Recap of Charles’ and Boyle’s Gas Laws
• What If Temperature, Pressure, and Volume all Change?
• Equation for the General Gas Law
• Sample Problem I
• Sample Problem II
• Topic Summary

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