How Central Air Conditioning Systems Work
How it works?
- The typical central air conditioning system is a split system, with an outdoor air conditioning, or "compressor bearing unit" and an indoor coil, which is usually installed on top of the furnace in the home.
- Using electricity as its power source, the compressor pumps refrigerant through the system to gather heat and moisture from indoors and remove it from the home.
- Heat and moisture are removed from the home when warm air from inside the home is blown over the cooled indoor coil. The heat in the air transfers to the coil, thereby "cooling" the air.
- The heat that has transferred to the coil is then "pumped" to the exterior of the home, while the cooled air is pumped back inside, helping to maintain a comfortable indoor temperature.
- Central air conditioning can also be provided through a package unit or a heat pump.
There are many sophisticated systems that have sensors built into the air-conditioning unit itself. There are usually two temperature sensors that monitor the temperature of the refrigerant, allowing the system to control the amount of heat being let out of the system. There can also be a pressure sensor so that the valve can be controlled to reduce or increase the flow of refrigerant.
Most systems also have a temperature sensor in each of the rooms where the system operates. These systems control the heat loss from individual rooms by altering the speed of the fans or merely by switching them on or off. The person in the room uses a touch screen to input the temperature. The temperature in each room is monitored and if it is above the preset value, the fans for that room are switched on by the microprocessor (or their speed increased) ; if it is below the value, the fans remain off.
Benefits
Most systems also have a temperature sensor in each of the rooms where the system operates. These systems control the heat loss from individual rooms by altering the speed of the fans or merely by switching them on or off. The person in the room uses a touch screen to input the temperature. The temperature in each room is monitored and if it is above the preset value, the fans for that room are switched on by the microprocessor (or their speed increased) ; if it is below the value, the fans remain off.
Benefits
- Indoor comfort during warm weather – Central air conditioning helps keep your home cool and reduces humidity levels.
- Cleaner air – As your central air conditioning system draws air out of various rooms in the house through return air ducts, the air is pulled through an air filter, which removes airborne particles such as dust and lint. Sophisticated filters may remove microscopic pollutants, as well. The filtered air is then routed to air supply duct-work that carries it back to rooms.
- Quieter operation – Because the compressor bearing unit is located outside the home, the indoor noise level from its operation is much lower than that of a free-standing air conditioning unit.
Newspaper Publishing:
