There are three main kinds of air conditioning systems. Summer air conditioning will clean, cool, and get rid of moisture from the air. Winter air conditioning will clean, heat, and add moisture to the air. Year-round air conditioning will clean and control the temperature and the amount of moisture in the air throughout the year.
Cleaning the air can be done in lots of ways. Some air conditioners will force the air through filters. Air can also be cleaned by blowing it through air washers. Some air conditioners also have electrostatic filters, or electrostatic precipitation. Others force the air through pieces with lots of pores of carbon. It is these pores will absorb odors.
Not only do air conditioners clean the air, they also must cool the air in summer and heat the air in winter.
When it cools the air, some air conditioners blow the air through sprays of cold water, these are the same sprays that are used to help clean the air. Others blow air over large areas of tubes that are either filled with chemical refrigerants or cold water. Some use cold water that comes from a river, well, or a city’s water supply.
Most of the air conditioners that are used in large buildings will heat the air by blowing it over coils that are filled with steam or hot water. It is a boiler that is heated by a gas, coal, or oil burner that produces the steam or hot water. In some air conditioners electric heaters will warm the air.
Air conditoners can get rid of moisture from the air in many ways. Warm air can hold more moisture then cold air. When air conditioners cool the air, the air will pass over cooling coils. The water in these coils can get cold enough so that the moisture in the air turns into liquid form.
Air conditioners can also remove moisture from the air. The air will pass through sprays of cold water. These sprays cool the air to condense some of the moisture.
Controlling moisture in the winter is also important. Cold air from the outside has only a little bit of moisture. When the air is heated it becomes really dry.
This dry air can cause people’s skin to become dry and their noses, throats, and lungs, to become irritated. To keep this sort of thing from happening, air conditioners add moisture to the air when the wheather is cold. It does this by passing air through sprays of water or over pans of water that are heated. The water will then evaporate into the air.
It is important for air to circulate because it is uncomfortable to be in motionless air. The air in rooms usually gets filled with odors and moisture. This air is then removed when conditioned air is blown in.
Air is blown through roons by fans. Air can be blown into rooms in two ways. By being blown in directly or blown in through pipes that will lead to different places in a room. As this is happening, other fans suck out the used air. In order to get rid of smoke and odors, the fans will drain some of the used air by blowing it out of the room.
The rest of the air that is left is returned back to the air conditioner, where it is then mixed with ventilation air that is coming from the outside. The mixture of the outside and inside air is then conditioned and circulated.
Eventually an air conditioner will replace all of the air in a room or building with ventilation air coming in from the outside. An air conditioner can circulate air through a room at a rate of around 15 to 40 cubic feet per minute. The size and speed of the fan in the air conditioner will determine the amount of air that is circulated through a room.