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Cooling systems are an essential element in many facets of modern society
including cars, computers and buildings. Cooling systems are usually divided into two types:
passive and active. Passive cooling transfers heat without using any additional energy while active
cooling is a type of heat transfer that uses powered devices such as fans or pumps. This paper will
focus on one particular type of passive cooling: air-conditioning systems. An air-conditioning
system is defined as controlled air movement, temperature, humidity and cleanliness of a building
area. Air conditioning consists of cooling and heating. Therefore, the air-conditioning system
should be able to add and remove heat from the area. An air-conditioning system is defined as a
control or treatment of air in a confined space. The process that occurs is the air-conditioning
system absorbs heat and dust while, at the same time, cleaning the air breathed into a closed space.
The purpose of air-conditioning is to maintain a comfortable atmosphere for human life and to
meet user requirements. In this paper, air-conditioning systems for non-residential buildings will
be presented and discussed.
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