Thermal Comfort Analysis in Dormitory Room by Combined MVHR-Fan Coil

Low-energy-demand buildings are increasingly using "mechanical ventilation with heat recovery (MVHR)" applications to improve thermal comfort and reduce ventilation energy loss. MVHRs are often used in conjunction with an additional air heater to satisfy the need for room heating in retrofitted buildings. Therefore, it is crucial to assess how MVHR and heat emitters interact and how this affects the features of indoor airflow. In this study, the effects of a combination MVHR-fan-coil unit in the heating phase on thermal comfort parameters in a retrofitted room are investigated via "a computational fluid dynamic (CFD)" simulation. Numerical simulation results allow for the assessment of indoor thermal comfort as well as the resolution of the fan coil and MVHR interactions. Additionally, investigate the turbulent airflow characteristics in winter and summer season. The result indicate that relocate the fan coil position from left side to middle of the external wall increases the room temperature. Installing the inlet vent in ceiling shows a no changes in the room temperature. It observed that Case 2 exhibited the highest temperature inside the room at 23.3 ºC, while Case 1 and Case 3 both had a room temperature of 22.6 ºC and 22.5 ºC respectively. The average temperature across all six planes followed a similar pattern, Case 2 consistently showing higher temperatures.