An AC unit or air conditioner is a machine that pumps out heat to cool an enclosed space. It works because of the principles of thermodynamics, moving heat from one place to another. An AC unit is made up of three components:
The compressor compresses gases to create heat energy which can be converted into mechanical work or electricity. This energy moves on to the condenser where heat is rejected in an insulated tube to dissipate into the surrounding environment. As a result, the gas compresses and becomes hot.
The evaporator then cools down the air that passes over it by providing cold liquid to absorb heat from the enclosed space. A fan moves this cooled air through ducting around the building.
During the winter season, heat from the outside is transferred to the inside, so an AC unit can be used as a heater as well as a cooler. To work as a heater, the process has to be reversed: for example, exhaust gas is sent into the evaporator and then into ducting where it warms up surrounding air.
The work of an AC unit is controlled by a thermostat, which switches it on or off according to the temperature in the enclosed space. For example, if it’s colder outside than inside, the AC returns heat from the interior to the exterior.
When used correctly, an AC unit can be a highly efficient and cost-effective way of cooling and heating buildings. However, problems can arise if they are not properly maintained or serviced. This can result in a loss of efficiency, meaning they use more energy than necessary and require repairs.
If the machine is not switched off when it’s not being used but left running, an AC unit will rapidly consume its supply of chemicals and mechanical parts. It should be turned on only when required to prevent undue wear and tear.
An AC unit can be particularly expensive to run when it is old and in a large building. It is advised that older machines are not used in favor of a modern, more energy-efficient one.
Tips on how to take care of your AC;
- Turn the machine off when it is not being used.
- Service and maintain your AC unit regularly to ensure efficiency, safety, and prevent damage.
- Do not use an older AC unit in favor of a new one as they use more energy.
- If the machine has a permanent supply of chemicals and mechanical parts, it will use them up quickly.
- Do not place plants near an AC unit as they may rot from the cold air.
- Only use your AC when required – otherwise keep windows open for fresh air.
In conclusion, AC units can be a highly efficient and cost-effective way of cooling and heating buildings. They should only be used when required, kept serviced and maintained regularly, and replaced by newer ones if they are very old. Leave windows open for airflow when not using the machine and make sure to switch it off before leaving.