From high school chemistry or boiling water on the stove you know how liquid water evaporates into a gas — steam- when it is heated to the right temperature. Refrigerants do the same thing — when they are in the liquid state they absorb heat, transforming into a gas. In the air conditioning system, the refrigerant is then forced to return to being a liquid causing it to expel the heat outside, and back it goes into the house to grab more heat to remove.
To cool off the inside of our homes or buildings the heat inside needs to go outside. Seems simple. And in some ways it is.
This is the job of the blower and evaporator. As the warm air from your home is blown across the evaporator coils the refrigerant in the coil absorbs the heat turning it from a cold liquid to a hot vapor. This whole process happens quickly, cooling the air in your home while the hot vaporized refrigerant dumps the absorbed heat outside through the efforts of the compressor and condenser.
The hot pressurized gas then is sent to flow through the condenser where condensation occurs. The heat dissipates into the air, often with the help of a fan, and the refrigerant gas is condensed back into a liquid state to start the whole process over again. Thermostats in our home are the central brain of the operation, telling the system when the temperature needs to be raised or lowered.
When the thermostat senses that the room air temperature is too high it sends a message to the system to start the cooling process.
A fan pulls the hot air into air ducts where it is passed through a filter system that removes airborne particles like dust and lint.
The warm filtered air then flows over the evaporator coil where the refrigerant absorbs the heat and the indoor air is cooled. A fan then pumps the cooled air back through the ductwork into the various rooms.
Meanwhile, the refrigerant has been converted to a gas and travels outside where the compressor pressurizes the gas and sends it to the condenser coil. Here the outdoor fan disperses the heat into the outdoor air and the refrigerant becomes a liquid and goes back through the cycle again.
The reason Willis Carrier invented air conditioning was to control humidity. Carrier was given the challenge to find a solution to humidity problems plaguing a New York printer. Humidity was causing poor production quality, lost production days, and threatening their production schedule.
Modern air conditioners come in a variety of shapes and sizes to help regulate both humidity and heat in your home or business to keep everyone cool and comfortable. The type of air conditioner that is right for you and your home depends on a variety of factors — size, physical location, and the way you use it are the main considerations. As the most common type of systems in the United States, central air conditioners are good for those who have larger homes and want to cool multiple rooms at once.
Here, the top two images feature examples of central cooling systems, and the bottom two images feature examples of ductless systems. Understanding the different types of air conditioners will help you determine which is right for your home. As we mentioned above, central heating and cooling systems , like central air conditioners, work by feeding air via ductwork through your home. Central air conditioners have both an indoor unit and an outdoor unit, and are one of the most common types of air conditioners.
These units are great for homes with a basement or crawlspace because the indoor portion can be tucked away in an unused space. Packaged air conditioners are another type of central air conditioner. Instead, packaged systems are two in one and are just located outside the home. These units are great for homeowners who want central air conditioning, but have nowhere to store a large indoor unit in their home. Dual fuel systems are a one-stop-shop for all your heating and cooling needs.
A heat pump can both heat and cool , so in a dual fuel system it can switch between functions depending on which is needed. Dual fuel systems function best in mild to extremely cold climates, so if you live in a place with changing temperatures, a dual fuel system could be the right fit for you.
Ductless mini-splits are perfect for those who need to cool just one room. In the case of a ductless mini-split, there is one outdoor unit connected to one indoor unit, and all of the cooled air will be pumped into the single room where the indoor unit is located.
Ductless mini-splits work great for people living in their own bedroom with other roommates in the rest of the home, like college students. Ductless units can be mounted on the floor or the wall. Floor-mounted ACs make you feel the cool air quicker and they look more discreet, but airflow can be compromised. A ductless multi-split works the same as a ductless mini-split, except the outdoor to indoor unit ratio can get up to , meaning up to five rooms can be cooled without ducts.
Ductless multi-splits are expensive to install initially because they require purchasing up to five individual ductless units. But, they are more energy efficient and cost less in utility bills compared to central cooling. Ductless multi-splits are ideal for people who live in homes without ductwork or those looking to save on their energy bills in the long run. Reducing the humidity also had the side benefit of lowering the air temperature -- and a new technology was born.
Carrier realized he'd developed something with far-reaching potential, and it wasn't long before air-conditioning systems started popping up in theaters and stores, making the long, hot summer months much more comfortable [source: Time ].
The actual process air conditioners use to reduce the ambient air temperature in a room is based on a very simple scientific principle. The rest is achieved with the application of a few clever mechanical techniques.
Actually, an air conditioner is very similar to another appliance in your home -- the refrigerator. Air conditioners don't have the exterior housing a refrigerator relies on to insulate its cold box.
One interesting fact you might not know is that your air conditioner and your refrigerator work primarily the same way.
The difference is your refrigerator cools a small, insulated space, and an air conditioner keeps your home, office, or commercial space at a comfortable temperature. Air conditioners are one part of a central heating and central cooling system that draws heat energy from outside of the home and transfers it. Simply put, the air conditioner in both a house and business is a central heating and cooling system that provides cool air through the sheet metal ductwork by providing via a process that draws out the warm air inside, removing its heat, which is replaced by the cooler air.
The entire process of making the air in your property a comfortable temperature is based on a very simple scientific principle, and the rest is achieved by mechanical means.
Your air conditioning unit uses chemicals that convert from gas to liquid and back again quickly. These chemicals transfer the heat from the air inside your property to the outside air. The AC unit has three key parts. These are the compressor, the condenser, and the evaporator.
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