Course Content
Lesson 2: Brief History of Refrigeration.
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Lesson 4: Introduction and Overview of Air-Conditioner & Refrigeration
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Lesson 8: Some Short Definitions Relative to HVAC
:- DBT :- WBT :- DPT :- RH :- Specific Humidity or Moisture Content :- Enthalpy :- Enthalpy Deviation :- Specific Volume :- Sensible Heat Factor :- Alignment Circle :- Pounds of Dry Air
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Lesson 9: Applied Psychrometry
Let us, now see how the various air conditioning procedures will be represented on a Psychometric chart.
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Lesson 10: Heat Load Estimation
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Lesson 11: Heat Load Calculation
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Lesson 12: Heat Load Calculation on Excel Sheet
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Lesson 13: Machine Selection
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Lesson 15: Air Distribution Terminal
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Lesson 16: How to Calculate Static Pressure
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Lesson 17: Kitchen Ventilation
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Lesson 18: Selection of AHU
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Complete Heating Ventilation & Air Conditioning Online Certificate Course In Hindi
About Lesson

Explain the Laws of Perfect Gases?

:- Perfect Gas:- A perfect gas may be defined as a state of a substance, whose evaporation from its liquid state is complete. It may be noted that if its evaporation is partial, the substance is vapor.

The behavior of superheated vapors is similar to that of a perfect gas.

The physical properties of a gas are controlled by the following three variables:- 1) Pressure exerted by the gas, 2) Volume occupied by the gas, and 3) Temperature of the gas.

Laws of Perfect Gas:-

  1. 1. Boyle’s Law:- This law was formulated by Robert Boyle in 1662. It states, “The absolute pressure of a given mass of a perfect gas varies inversely as its volume when the temperature remains constant.”

2. Charles Law:- This law was formulated by Frenchman Jacques A.C. Charles in about 1787. It may be stated in two different forms.

(i) “The volume of a given mass of a perfect gas varies directly as its absolute temperature when the absolute pressure remains constant.”

(ii) “All perfect gases change in volume by 1/273 th of its original volume at 0 degree Celsius for every 1 degree Celsius change in temperature when pressure remain constant.”

3. Gay – Lussac Law:- This law states, “The absolute pressure of a given mass of a perfect gas varies directly as its absolute temperature when the volume remains constant.”

Exercise Files
Thermodynamics Terms and Concept for HVAC.pdf
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