Briefly, the process is as follows: The hot air in your home is absorbed by a special chemical refrigerant that flows through your aircon coils. Refrigerant flows from your home to the outdoor air unit, where it is removed and sent back to your home. For aircon service and installation , please visit our website .
There are special features that allow the refrigerant to collect or release heat at the right intervals. These include evaporators, compressors and air condensers.
If you’re like most people, this explanation asks more questions than it answers, so let’s dig a little deeper.
Stage 1 – Absorb heat from the house
The first part of the process is to absorb heat into the evaporator coil. Hot air is drawn through a grill placed at the bottom of the unit.
The hot air is then blown out through a vent that blows over the evaporator coil. The evaporator coil is similar to a car radiator. If you have a window unit, it is the back of the unit. If you have an HVAC system in your home, the coils are mostly large boxes next to the house in your yard.
When air is blown through a coil, it causes a reaction called latent heat transfer or heat transfer. Don’t bother you with a scientific explanation, it has to do with the cooling effect of evaporation.
Basically, when the refrigerant cools, it is 80% liquid and 20% gas, but when it is heated, it becomes completely gas. Air conditioning units use physical principles and use these transformations to absorb or remove heat from liquids.
It refers to the heat of evaporation per unit mass. During evaporation, no temperature change was recorded, but heat was converted to steam.
Once the refrigerant is completely changed to a vapor state, it undergoes a process of overheating. Once the steam completes its full cycle back to the compressor and through the condenser, it returns to 80% liquid and 20% original vapor consistency. Again as a low pressure cooler, it restarts the whole process, cooling the air directly through the air conditioning unit.
Stage 2 – Raise the temperature
When it is forced through the compressor, the temperature rises. This reduces the volume of the gas and prepares it for condensation. As it passes through the tube, warm air from the house is blown through the tube and absorbs heat.
When the refrigerant is heated, it becomes 100% gas. When this happens, it can enter the third stage of the process.
Stage 3 – Transfer heat to the outside
Once the refrigerant is gas, it goes to the external condenser. Heat from outside actually absorbs heat in the refrigerant, lowers its temperature and pushes it back to 80% liquid and 20% gas.
The cold air created during this process is pushed through the vents. Eventually, all the hot air ran out of the building.
Stage 4 – Repeat the whole process
Now that the coolant is in a liquid state, it is once again able to absorb heat. Obviously it won’t work well if it draws heat from the outside, which is why it’s immediately pushed in and the process is repeated.
This process continues until the thermostat tells us that the desired temperature has been reached. Once the temperature is correct, the air conditioning system shuts down until the temperature rises again. At that point, it all started all over again.
What about evaporative air conditioners?
Evaporative air conditioners work very similarly, but more simply. They basically take warm air and push it over a water source to cool it. Then blown back into the room. There are two different types of evaporative air conditioners: direct and indirect.
Direct air conditioning is called “direct” because it is in direct contact with the water source. Usually a wet sponge that blows air directly. This causes the air to be cooled and blown back into the room.
Indirect air conditioners have no direct contact with water, but they use pipes similar to traditional air conditioners. The main difference is that the tubes contain water instead of chemical refrigerant.
Evaporative air conditioners are more economical than traditional air conditioners. They are also more environmentally friendly than traditional air conditioners. However, they have some problems.
For example, they are not very efficient in removing heat from the room. Another major drawback is that they can actually add moisture to the room, not remove it.