Abstract
The centralized air conditioning system is developed to fulfill the cooling demand of the building. In this type of air conditioning system, the entire building is conditioned by a single unit that is installed in the building. The system cools and heats supply air after performing required humidification and dehumidification. This conditioned air is flowing through the ducts and supply to the registered location for each room. The research has shown that a centralized air conditioning system is a costly system because it requires a complete ducting system to reach the conditioned air in each room. There are huge amounts of energy losses from the ducts, which makes it less efficient and less flexible, adding to this, the user cannot control temperature room-by-room. Mini-split air conditioning systems have been developed to address these problems. Mini-split systems do not require any ducting, reduce cost and energy losses. The comparison of working efficiencies of centralized air conditioning systems and mini-split air conditioning systems is made to understand the energy losses between them. Results indicate that energy losses in centralized air conditioning systems were higher than those for mini-split systems. In this thesis, we will discuss the central air conditioning system and the mini-split system, and how the mini-split system application at residential houses can save more energy and cost.