Solar radiation is also converted into heat when it is absorbed by the building envelope: roof, walls, windows, floors and internal walls of a house. Hence, the cooling load of the building is increased. Thermal radiation effects on thermal comfort, energy consumption, air conditioning controls and productivity are obvious. However, radiant temperature and radiant asymmetry are often neglected in standards due to their complexity and practical limitations. Moreover, the mean radiant temperature in the adaptive model for naturally ventilated buildings is not represented by a direct route [104]. Reducing the radiant field impact through shading or envelope design during the design stage increases the thermal comfort inside the buildings in the future, which is very important for the occupants in the hot and humid climate. In this regard, the envelope and shading design is important to identify an appropriate passive design technology to achieve energy savings and thermal comfort.