Course Content
Lesson 2: Brief History of Refrigeration.
Lesson 4: Introduction and Overview of Air-Conditioner & Refrigeration
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
Lesson 9: Applied Psychrometry
Let us, now see how the various air conditioning procedures will be represented on a Psychometric chart.
Lesson 10: Heat Load Estimation
Lesson 11: Heat Load Calculation
Lesson 12: Heat Load Calculation on Excel Sheet
Lesson 13: Machine Selection
Lesson 15: Air Distribution Terminal
Lesson 16: How to Calculate Static Pressure
Lesson 17: Kitchen Ventilation
Lesson 18: Selection of AHU
Complete Heating Ventilation & Air Conditioning Online Certificate Course In Hindi
About Lesson

Since prehistoric times, Snow and Ice were used for cooling. The business of harvesting Ice during winter and storing for summer in late 17th century.

This practice was replaced by mechanical ice-making machine. 2nd Century Chinese inventor Ding-Huan of the Han Dynasty invented a rotary fan for AC.

For 17th Century, Cornell’s  Drebbel demonstrated “Turning summer into winter” for jams of England by adding salt to water.

James horrison’s first ice-making machine began in operation in 1851. Followed in 1853, vapor compression refrigeration system was granted in 1855.

 Modern AC emerged from advanced in chemistry during the 19th century. The first large scale electric AC was invented and used in 1902 by American inventor Willis Carrier.

Willis Carrier is also known as fater of HVAC.

In 1902, First modern electric air conditioning unit was invented by Willis Carrier in Baffalo, New York.

The First Air-Conditioner, designed and built in Baffalo by Carrier, began working on 17th July 1902.

In 1995, Germany made CFC refrigeration illegal.

In 2004, Greenpeace worked with multinational corporation like Coca-Cola and Unilever and later Pepsico and other, to create a corporate coalition called Refrigerant Naturally

Exercise Files
Brief History of Refrigeration.pdf
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