The paper reports on a study in which factors influencing the performance of used livestock ventilating fans were evaluated. Such factors as the effect of louvers, guards, corrosion of louver joints, and dust and moisture accumulation were studied. The louvers and their maintenance had the largest effect on fan performance. The effect of guards depends upon how much they constrict airflow. Of the two fans tested the total efficiency reduction ranged fromn 0 to 15 percent. Dust and moisture accumulation on guards may cause further reduction in fan performance. Corrosion of louver joints can have a large effect upon fan performance. The extent of performance reduction depends upon the moment that must be applied to the louvers to open them. Proper lubrication of louvers is probably the most important factor in maintaining fan performance. Dust and moisture accumulation on louvers can have a substantial effect upon fan performance. This depends upon the mass of material that accumulates on the louver surface, thus requiring a greater moment to open the louver. Fan discharge was reduced up to 24 percent on a fan with wet caked louvers.
|Original language||English (US)|
|Journal||Paper - American Society of Agricultural Engineers|
|State||Published - Jan 1 1978|
|Event||Pap ASAE for Winter Meet - Chicago, IL, USA|
Duration: Dec 13 1977 → Dec 16 1977