Energy-Saving technology of axial flow fan used in air-conditioning system

Abstract

The present study provides an energy-saving design method of axial flow fan used in air-conditioning system and verifies its design results through comparison with test results. The present design method employs combined vortex design concept in constructing three dimensional fan blades, and the performance analysis of designed fan is made by the through-flow method with pressure loss and flow deviation distribution models along swept blade height. For the verification of the present design method, a new fan model is designed and manufactured, and its performances are predicted and compared with actual test results. The comparisons between the present prediction and the test results show very good agreements in the aspects of static pressure, power and efficiency. Furthermore, the present design method is shown to give less power consumption than conventional fan model. 