Ceiling fans are used all over the world as a mean of enhancing indoor thermal comfort. A number of grading programs have been initiated for assessing energy performance of ceiling fans, such as ANSI/AMCA 230, Energy Star, IEC 60879, IS 374 and SLS 1600. The configurations of test setups used for performance evaluations in these standards have significant differences to each other. In this study, the influence of such differences on the calculated performance grade of ceiling fans were investigated and the suitability of each dimension of the test set-up is discussed. Particular emphasis was placed on quantifying the effect of the cylindrical drum used in Energy Star and SLS test methods. For this assessment, extensive three-dimensional numerical simulations and experimental measurements were used. Accordingly, the effect of cylinder height, gap between the fan rotation plane and the cylinder, cylinder diameter and the dimensions of the test chamber were investigated. Results show that, the test cylinder, has no significant impact on the calculated performance grade of the tested ceiling fan (variation is less than 2%), and may be eliminated from the test setup. This justifies the recent decision of AMCA on the removal of test cylinder from the fan test set-up. Further, it was also found that the set up dimensions considered herein is large enough so that the calculated start rating is uneffaced by the surrounding solid walls.

全世界都在使用吊扇，以提高室内的热舒适度。已经启动了许多评估吊扇能量性能的分级程序，例如ANSI / AMCA 230，Energy Star，IEC 60879，IS 374和SLS1600。这些标准中用于性能评估的测试装置的配置存在显着差异对彼此。在这项研究中，研究了这种差异对吊扇计算性能等级的影响，并讨论了测试装置各尺寸的适用性。重点特别放在量化能源之星（Energy Star）和SLS测试方法中使用的圆筒形鼓的效果上。对于此评估，使用了广泛的三维数值模拟和实验测量。因此，气缸高度的影响 研究了风扇旋转平面与气缸之间的间隙，气缸直径和测试室的尺寸。结果表明，测试气缸对测试的吊扇的计算性能等级没有显着影响（偏差小于2％），并且可以从测试设置中消除。这证明了AMCA最近决定从风扇测试装置中卸下测试气缸的理由。此外，还发现，本文考虑的设置尺寸足够大，以使得所计算的起始额定值不会被周围的实心壁所影响。不会对计算得出的吊扇的性能等级产生重大影响（偏差小于2％），并且可以从测试设置中消除。这证明了AMCA最近决定从风扇测试装置中卸下测试气缸的理由。此外，还发现，本文考虑的设置尺寸足够大，以使得所计算的起始额定值不会被周围的实心壁所影响。对测试的吊扇的计算性能等级没有重大影响（偏差小于2％），并且可以从测试设置中消除。这证明了AMCA最近决定从风扇测试装置中卸下测试气缸的理由。此外，还发现，本文考虑的设置尺寸足够大，以使得所计算的起始额定值不会被周围的实心壁所影响。