Ton of Refrigeration

What is Heat & Mode of Heat Transfer?

How to detect leakage in Air conditioner

How to Charge Gas in AC


Central Plant Chilled Water System

Air Distribution Terminal

Selection of Air Handling Unit

Kitchen Ventilation Design

What is Air-Conditioning? & Its working

What is Air-Conditioning?

Air- conditioning is the process of obtaining the desired air property or a condition like a temperature, humidity, purity, pressure.

Used in Domestic as well as in the commercial environment.

Definition: – Air –conditioning is the simultaneous control of temperature, Relative Humidity, Air movement, and Air cleanliness in the conditioned space.

The primary function of air conditioning is to maintain conditions that are: 1)For Human Comfort 2) Required by a product or process within space. ●

Reasons for using  Air conditioning:-

a) To improve productivity in the office, factories by maintaining comfort conditions for people.

b) To maintain comfortable conditions for working in hotels, labs, etc.

c) To avoid malfunctioning of some of the control panels in the electrical control building.

d) To maintain pressure inside the premises for avoiding outside (dusty) air into the room.

e) To create a healthy atmosphere inside the room by supplying fresh and filtered air in the room.

f) To provide clean, filtered, healthy, comfortable conditions in hospitals, etc.






Without these component, cycle cannot be complete

Secondary Components of Air-Conditioning:-

1)Condenser fan

2)Evaporator fan or blower

3)Liquid receiver/Drier/Accumulator


How Does Air-Conditioning Works?

As with all air conditioning systems, the principle remains the same whereby the heat is removed from one area and replaced with chilled dry air and the hot air is expelled, normally to the outside atmosphere.

Basic Operations

An air conditioner is able to cool a building because it removes heat from the indoor air and transfers it outdoors. A chemical refrigerant in the system absorbs the unwanted heat and pumps it through a system of piping to the outside coil. The fan, located in the outside unit, blows outside air over the hot coil, transferring heat from the refrigerant to the outdoor air.

Most air conditioning systems have five mechanical components:

• a compressor
• a condenser
• an evaporator coil
• blower
• a chemical refrigerant