How a Portable Air Conditioner Works 54

The most typical and cost efficient cooling devices are the Central air conditioning Units. This is comprised of indoor and outdoor portions. An air filter, a fan and a cooling coil are parts of the indoor portion. The warm, damp air is drawn through the filter and into the fan then blown over the cooling coil. The cooling coil then cools and humidifies the air before it is blown into the room. The cooling coil contains a refrigerant fluid, which changes its physical property from liquid to gas because heat from the warm air passing over the coil causes its evaporation. Heat from the warm and damp room air is taken thru this process. The outdoor portion of the unit consists of a compressor, a fan and a condenser. The cooling coil releases low-temperature and low pressure refrigerant gas to the compressor. The compressor on the other hand delivers high-temperature and high pressure refrigerant gas to the condenser. The fan blows outdoor air over the condenser. Inside the condenser the high temperature, high pressure refrigerant gas is converted to refrigerant liquid. Heat from the warmer refrigerant gas is taken by the cooler outside air passing over the condenser.

This process causes the refrigerant gas to modify to the liquid state. The refrigerant liquid circulates through the closed path leading thru the cooling coil, the compressor and the condenser in a continued motion. The comparatively cool outdoor air is sucked by the fan for cooling the condenser and then blows the hotter air back out of doors. In a room air conditioner, electrical motors drive the compressor and the two fans. 110-volt lines are used for smaller room air conditioning units while for larger units 220 volt line supplies are used. A whole small residence can be cooled by some room air conditioners with enough capacity.

though Window air-con Units are the lowest-cost cooling device, it has its own disadvantages which include the following :

1. Most room units can provide only widely irregular room air temperature.


2. Most room air conditioners operate with noise.


3. It is difficult to get an even distribution of cool air.

due to the known disadvantages of a room air conditioner many people would prefer to use the more expensive central cooling system.

A central cooling system is sometimes divided into 2 units : An indoor and an out of doors unit. A filter, a fan and a cooling coil represent the indoor unit. The outdoor unit on the other hand consists of a compressor that's motor-driven, a fan for the condenser and a condenser. A cabinet mounted outside houses these components. Most home cooling systems provide humidity reduction but offer only terribly limited humidity control. The length of the compressor operation determines the moisture content reduction. For example, a low indoor humidity cost of forty % is reached when the compressor operates steadily for one or two hours in a hot summer day, but as night time approaches and the compressor stops operating, the water drops on the cooling coil tend to evaporate and a jump in the indoor humidity happens. This variable humidity and its limited control however , are OK to home owners who are using the central cooling system.

Portable Air Conditioner system

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