Operating principle of a cold air production system
A cold air production system is used to cool an area vp hr email lists in a building, commonly known as air conditioning . An air conditioning system works on the principles of thermodynamics to produce a change in temperature between a colder space (the refrigerated area) and a warmer area (outside air), using a refrigeration cycle.
Refrigeration cycle
Cooling is a process used in air conditioning equipment that consists of producing cold by extracting heat from the lowest temperature source. In reality, cooling an area consists of transporting heat from that place to another where it is dissipated, generally the environment, thus achieving that the refrigerated source cools down. As the heat flow goes from a lower temperature source to a higher temperature source, this goes against the natural flow of heat and therefore, to air-condition the area, energy is required.
Types of technologies for producing cold air
Generally speaking, air conditioning cooling is produced by two different systems that use compression refrigeration cycles or absorption refrigeration cycles.
The most common systems use a compression refrigeration cycle , and therefore, the energy source used is electrical energy, which is used to operate the equipment's compressor.
Types of cold air production systems
Depending on the system components, air conditioning equipment for producing cold air is classified into the following types.
Portable systems without an outdoor unit
These are equipment that do not require installation, as opposed to a split system or a heat pump, since these require the placement of a unit outside, generally on the façade or in the window. These portable equipment can be moved from one room to another easily and to use them you only have to manually place the hot air extractor tube in a window or gap outside.
Split air systems
These systems have two different types of equipment. Firstly, a compressor that is located outside and is connected to the evaporator equipment, located inside the building. The most common type is the wall-mounted split air conditioner, but there are units that can be installed built into the ceiling and are known as cassette type equipment.
