Abstract
The regional air conditioning mechanism (RACM) can control the airflow in the workroom for the purpose of achieving a regional steady-state temperature. With this concept, each staff in a different area of the location can be satisfied with respect to their own local environment. The RACM was constructed of a main duct inlet-outlet round ports. The system were conducted in this study with varying relative distance between inlet and outlet port, inlet port height, and outlet port height to obtain the optimal airflow and temperature distribution and thermal comfort indices in occupied zone. Based on low intake airflow velocity magnitude, the laminar model has been investigated for numerical simulation of airflow in different 9 cases. A solution-adaptive mesh refinement is brought to refine and coarsen model to enable the physical feature of the flow field to be better resolved. The CFD simulation results predicted that the RACM could successfully establish a regional airconditioning cell, an individual personal-comfort, and RACM inferred more energy efficient than a typical air conditioning system. The concepts in this study are relevant to all kinds of regional air conditioning in any enclosed space.
Keywords: Energy-saving, Regional air conditioning, Airflow management