An investigation has been carried out to understand the optimal size and location for air-inlets within confined spaces such as domestic kitchens for improved ventilation processes. This analysis was carried out using Computational Fluid Dynamics (CFD) techniques and Indoor Air Quality (IAQ) factors and comfort levels were used as performance indicators.\ud \ud \ud A model kitchen was constructed including a gas range cooker and an Extraction Hood and the cooking process was simulated. Carbon Dioxide (CO2) concentration was used as the IAQ indicator to establish efficiency of the ventilation process. The effects of the various air-inlet sizes and locations were determined by observing the performance of the kitchen hood in maintaining the recommended level of CO2 within the room
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