Comment: Most of the works using type 2 local air conditioners, cheaply and commonly used, in accordance with the space that functions independently. Widely used followed by the air conditioning system VRV / VRF, the cluster system is condensed by cooling the air. Currently, the air conditioning system is quite popular and widely applicable building, large investment costs but efficiency and high savings. This air conditioning system is suitable for buildings with open space, easy management and installation shutdowns average temperature for each space through the central controller (DDC controller). Used at least chiller air conditioning system (air cooling chiller, water-cooled chiller), this system with high capacity cooling large areas such as supermarkets, factories, ... Operation and Management system management is also quite easy thanks to integrated system controller from the center, but not flexible cooling temperatures. With a very high investment cost, large-sized systems that require more space installation, warranty and maintenance process is difficult because the highly specialized needs. This is why chiller air conditioning system is not used much in the works.
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