Impact of Layer Configuration and Chilled Water Temperature on the Cooling Capacity of Thermally Activated Light Shelf (TALS) System

Light shelves provide a function to control direct sunlight and introduce daylight into indoor spaces. Also, chilled water flowing in the light shelf can mitigate local cooling demands perimeter zones. Therefore, this study, thermally activated (TALS) system was proposed, TALS’s radiative capacity evaluated. To do this, mock-up chamber developed using prototypes of TALS systems based on panel configurations. It is included: ‘Insulated’ (INS), ‘Air layer’ (ARL), layer with fans’ (ARF), which were designed increase thermal insulation, natural convection, forced convection panels, respectively. The experiment showed that ARL ARF increased by 29% 57% compared INS. Natural convective heat transfer fan-forced airflow TALS's air cavity contributed improving capacity. With INS ARL, temperature recorded at 28.6°C, requires additional space cooling. reduced up 2.0°C because fans expedited mixing between test chamber. results study could be used estimate propose an optimal design buildings.