Vortex flows from centrifugal fan
نویسندگان
چکیده
A comprehensive work has been accomplished for the observation of flow details from a centrifugal fan inside an indoor unit of air conditioners. The present study is finding optimum flow paths in the system that supplies temperature-controlled air into the space human being. Fig. 1 shows the outlet grill of the system (left) and the flow details by PIV system (right) over the grill are objectives of this study. Experiments using PIV system are adopted for velocity measurements. Parallel works with velocity measurements for visualization of out flows illustrates the velocity vectors are good in accuracy. The present experimental rig is PIV system with a high-resolution digital camera. The distribution and patterns of the discharging velocities from the air-conditioner are very useful for design and improvements of the duct in the present unit. Vortex flows of the outlet flows appear in the velocity field of previous system. However, with the improvements referred with the velocity profiles, the efficiency of the system of the modified model increases by about 25%.
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