Jakarta Green Building User Guide : Volume 2 - Air Condition & Ventilation System

Most modern buildings are designed to be completely or mostly enclosed, shielding its occupants from direct contact with the outside environment. Air-conditioning systems are used to provide comfortable indoor thermal conditions. This is in contrast to the traditional architecture of Indonesia, which relied heavily on shading the indoors from the harsh sun, while allowing breeze to flow freely through the building. In Jakarta’s tropical climate, thermal comfort is primarily provided by cooling indoor temperature, lowering humidity levels in the air being supplied to the space, and ensuring the cleanness of the supply air. “Comfortable” conditions as defined by standards for Jakarta include indoor temperature of 25o C and 54% to 66% relative humidity