The profession of air conditioning and refrigeration has become more important nowadays, especially with development, scientific progress and the advancement of the level of life, This profession has played an important role in industry, housing and buildings, But there is a confusion between the concepts of air conditioning and cooling, So in this article we will explain the concept of both cooling and air conditioning and the most important terms used in this field as well as the most important courses in air conditioning and cooling.

The concept of air conditioning and cooling

Air conditioning in the overall sense is to process the air in the building or the place to be adapted to make it more suitable for the comfort and health of the human being or to provide the right atmosphere for the work of some machinery or industrial processes, It means reaching optimal conditions with temperature, humidity, air movement, air distribution, reducing dust, odors, harmful gases and microbes, This process is done by adding or pulling heat, moisture and spoiled air from where it is to be adapted to reach a constant heat that provides comfort to people in summer and winter.

As for cooling, it is a process in which heat is removed to reduce the temperature of a space to preserve the materials in it from damage or to achieve certain industrial or scientific purposes for this product or refrigerated material, The choice of the low temperature needed to maintain depends on the type of product and the duration of storage, Either it is short-term storage and the product or material cools at a temperature above freezing, Long-term storage is done at an subfreezing temperature, Storage conditions depend on the nature of the product and the period required for storage, Storage temperature, humidity and air movement within the cooling warehouse are taken into account.

Air conditioning and cooling terms

Cooling broker: is any substance that acts as a cooling agent, This is by contributing to the absorption of heat from one body to another.
Air conditioner: A device, system or mechanism designed to control temperature, humidity and air quality in a specific area.
Air cooling system: A type of air conditioning system uses air as a transport medium to reject heat from radiator to condenser.
Air Handling Unit (AHU): A central unit consisting of fans, heating and cooling elements, filtration shelves, dampers, humidifiers and other central equipment needed to provide proper ventilation and extraction.
Isotropic point: The temperature at which the liquid mixture boils and produces steam in the same composition as the liquid.
Bubble point: Is the pressure at which the coolant begins to evaporate.
Hair tube: A measuring device consisting of a small diagonal tube designed to restrict flow.
System: Cascadesystem contains two or more circuits of cooling circuits operating in a chain to provide the specific level of cooling.
Radiator: A device that removes heat from a secondary cooling center such as water or other solution through a steam cooling cycle.
Compressor: One of the main components of the cooling system lifts the pressure (and therefore the temperature) of the radiator and rotates around it through a closed loop system.
Condenser: An air-cooled container or file that removes excess pressure heat, Cooling gas condenses into high-pressure liquid.
Condensation unit: Part of the cooling system is the air conditioning system, which includes a compressor, engine heat switch and condenser.
Fixed air volume: Fixed air volume (CAV) is a type of heating, ventilation and air conditioning system.
Convection: Transfer heat by changing density in liquid or gas, Two liquid currents pass through each other.
Cooling tower: A water conservation device used to provide water for cooling capacitors.
Damper Damper: An adjustment device to control air flow rates through ducts or air handling equipment.
Economizer Economizer: A mechanical device used to reduce energy consumption, Economists recycle energy produced in the system or improve environmental temperature differences for better efficiency.
Extension valve: A device that regulates the amount of radiator flowing from the liquid line to the evaporator.
The fan coil unit :(FCU) is a refrigerated water device consisting of a cooling file, fan, valve and local controller.
Filter-Drier: A device inside the cooling system contains a dried material designed to remove water.
Fingerprint: The space occupied by the air conditioning unit when applied.
Glide: Different boiling temperatures for cooling mix components, The relative components of the mixture are changed across the temperature range.
Moisturizing: The process of adding moisture to the air inside space.
Heating, ventilation and air conditioning (HVAC): is the internal environmental comfort technology of vehicles, Its goal is to provide thermal comfort and acceptable indoor air quality.
Reflector compressor: This type of compressor uses the inverter engine to control the speed of the compressor engine to adjust capacity to different demand.
Latent cooling capacity: The amount of energy added or removed from the air in order to increase or reduce the moisture content in the air during the air conditioning process.
Radiator: The liquid is used to transfer heat within the cooling system, The radiator absorbs heat at low temperature and transmits heat at high temperature.
Spiral compressor: The compressor uses the action of two simultaneous supports to press the cooling vapor.
Helical compressor: A type of compressor with two compatible scrolls, One is fixed and the other swings to compress the radiator as it passes between them.
Split system: In other things, the separate air conditioning system consists of two main parts: the external unit (condensation) and the internal unit.
Sub-cooling: Remove heat from the liquid to a lower degree than saturation temperature at this pressure, This usually occurs in an intense heat exchanger.
Thermal expansion valve: A precise controller, Designed to control the heat of the evaporator by regulating the rate at which the coolant flows into the evaporator.
Flow unit: A type of air conditioning system that discharges air into space through the upper electrical group installed or through the upper tube system.
Water cooling system: kind of air conditioning system that uses refrigerants, Water is used as a condensation medium.

D. Air conditioning and cooling

The air conditioning and cooling course is designed to give participants the skills needed to work in the field of air conditioning and refrigeration at work sites and various projects for air conditioning and cooling systems, Participants also gain knowledge of the ways in which these systems are installed and operated, as well as methods of system selection and the use of highly efficient products and systems, Proper installation, accurate operation and final testing have a significant impact on customer satisfaction and energy savings.

The air conditioning and cooling course aims to provide trainees with the basics of electrical and mechanical circuits for various air conditioning devices and their elements and methods of installation, replacement and maintenance, It also displays various connectivity and operation tools and processes.

Course Outputs

Learn the skills needed to work in air conditioning and cooling to work in different workplaces and projects.
Learn about the methods of installing and operating solar systems, methods of system selection and the use of highly efficient products and systems.
Learn the basics of electrical and mechanical circuits for different air conditioners and their elements and ways to install, replace and maintain them.
Learn the different tools and processes of connectivity and operation as well as the components of these systems and the principle of their respective work.
Learn about air conditioning and central cooling systems, integrated air conditioning systems and air distribution systems.

Course materials

Cooling media tables and maps
Simple steam compression cycle
Mechanical Cooling Department
Simple cooling circuit components
Choose cooling media
Chlorofluorocarbonate and ozone layer
Alternative cooling media
Saline solutions
Basics of air conditioning technology
Cycrumtric processes
Thermal loads
Design conditions
Calculating cooling and heating loads

Conclusion

After this article we can say that cooling is the transfer of heat between water (cooled or iced) and the outer air whose temperature depends on the area, Air conditioning is a process in which the temperature and humidity of the room are improved. Cooling is a process in which an amount of heat that exists in an unwanted place is pulled out and this heat is diverted elsewhere, Air conditioning is a process in which air is processed industrially by eliminating excess moisture and purifying and distributing air.