TY - JOUR
TI - Low-pressure reversible axial fan with straight profile blades and relatively high efficiency
AU - Spasić Živan T
AU - Milanović Saša M
AU - Šušteršić Vanja M
AU - Nikolić Boban D
JN - Thermal Science
PY - 2012
VL - 16
IS - 12
SP - 593
EP - 603
PT - Article
AB - The paper presents the design and operating characteristics of a model of  reversible axial fan with only one impeller, whose reversibility is achieved  by changing the direction of rotation. The fan is designed for the purpose of  providing alternating air circulation in wood dryers in order to reduce the  consumption of electricity for the fan and increase energy efficiency of the  entire dryer. To satisfy the reversibility of flow, the shape of the blade  profile is symmetrical along the longitudinal and transversal axes of the  profile. The fan is designed with equal specific work of all elementary  stages, using the method of lift forces. The impeller blades have straight  mean line profiles. The shape of the blade profile was adopted after the  numerical simulations were carried out and high efficiency was achieved.  Based on the calculation and conducted numerical simulations, a physical  model of the fan was created and tested on a standard test rig, with air  loading at the suction side of the fan. The operating characteristics are  shown for different blade angles. The obtained maximum efficiency was around  0.65, which represents a rather high value for axial fans with straight  profile blades.