Course Content
Lesson 1: HVAC Introuduction
Why do we need to learn this HVAC certificate course? What is HVAC? What is the scope of HVAC? What the Fields for HVAC Engineer?
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Lesson 2: Brief History of Refrigeration.
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Lesson 3: Basic of Thermodynamics
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Lesson 4: Introduction and Overview of Air-Conditioner & Refrigeration
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Lesson 5: Fundamentals of Refrigeration
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Lesson 6: Basic Refrigeration System & Its component
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Lesson 7: Elements of Psychrometry
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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 12: Heat Load Calculation on Excel Sheet
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Lesson 13: Machine Selection
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Lesson 14: Duct Sizing
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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

### Function:-

The function of the compressor is to convert low temperature & low-pressure vapor to high temperature and high-pressure vapor.

Compressor is a mechanical device which start  cycle of Air-Conditioning process.

The compressor plays the very important role of compressing the refrigerant as it enters the machine in order to increase its temperature. Once heated, the gas leaves the compressor and goes into the condenser so the cooling process can begin.

In a Air-Conditioner, Compressor receive the low pressure and low temperature vapor from evaporator and converts its into high pressure & high temperature vapor.

### Reciprocating Air Conditioner Compressor

The reciprocating compressor is the most popular type of AC compressor. A piston compresses the air by moving up and down inside of a cylinder. As the piston moves down, it creates a vacuum effect that sucks in the refrigerant. As it moves up, the gas compresses and moves into the condenser. A reciprocating air conditioning compressor is very efficient, as AC units can have up to eight cylinders within the compressor.

### Scroll AC Compressor

Scroll air conditioning compressors, like this LG compressor, are newer on the scene. They contain one fixed coil—called the scroll—in the center of the unit, and then there is another coil that rotates around it. During this process, the second scroll pushes the refrigerant towards the center and compresses it. Scroll compressors are quickly becoming as popular as reciprocating compressors because they do not have as many moving parts and are therefore more reliable.

### Screw AC Compressor

The screw compressor is extremely reliable and efficient, but it is mainly used in large buildings where there is a vast amount of air that requires continuous cooling. A screw air conditioning compressor contains two large helical rotors that move the air from one end to the other. As the refrigerant moves through the compressor, the space gets smaller, and it gets compressed.

### Rotary Air Conditioning Compressor

Rotary compressors are small and quiet, so they are popular in locations where noise is a concern. The inside of this type of AC compressor contains a shaft with several blades attached to it. The bladed shaft rotates inside the graduated cylinder, consequently pushing the refrigerant through the cylinder and compressing it simultaneously.

### Centrifugal Air Conditioning Compressor

The final type of AC compressor is the centrifugal compressor. As the name implies, it uses centrifugal force to pull in the refrigerant gas and then spins it rapidly with an impeller to compress it. Centrifugal air conditioning compressors are usually reserved for extra large HVAC systems.

Exercise Files
Compressor and It’s Types.pdf
Size: 699.47 KB