Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2003.11a
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- Pages.851-856
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- 2003
Performance Characteristics of a Cross-Flow Fan with Various Impeller Outlet Angles and Rearguiders
임펠러 출구각 및 리어가이더 형상 변화에 따른 횡류홴의 성능 특성
Abstract
A cross-flow fan consists of an impeller, a stabilizer and a rearguider. When it applied for an air conditioner, an evaporator should be added. It relatively makes high dynamic pressure at low speed because a working fluid passes through an impeller blade twice and blades have a forward curved shape. Therefore, the performance of a cross-flow fan is influenced 25% by the impeller, 60% by the rearguider and the stabilizer, 15% by the heat exchanger. At the low flow rate, there are a rapid pressure head reduction, a noise increase and an unsteady flow against a stabilizer and a rearguider. Moreover, the reciprocal relation between the impeller and the flow passage is the important factor for performance improvement of the cross-flow tan because each parameter is independent. The performance characteristics in the cross-flow fan are graphically depicted with various impeller outlet angles and rearguiders.
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