CFD simulation analysis of thermal comfort with variations in the number of cooling inlets

The increase in heat generated by the sun is an effect of global warming that can harm both life and the surrounding environment. In this case, sweltering weather in urban areas can create a massive problem regarding workers’ productivity. An improper ventilation system can make the room temperature increase. Therefore, comfortable thermal conditions will make indoor activities run effectively. This study aims to determine the number of cooling inlets in the mosque room, measuring 11.1×11.4×3 meters. This research was conducted by numerical simulation modeling. Thermal conditions were analyzed using ANSYS Workbench CFD simulation software. Weather conditions are adjusted to the Surakarta area, Indonesia, in June. This thermal comfort condition analysis was based on the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). Calculations are carried out to determine the appropriate inlet temperature with consideration of indoor and outdoor temperatures. Based on the simulation results, 80% of the room reaches the desired temperature of around 20°C in Case 3. In this case, the configuration of the Air-Conditioner and outlet flow greatly affects the desired room temperature.