Giant Solar Sensor Security 4B

·        The most commonplace use of standing fans today is in conjunction with an air conditioning unit. Without an operating standing fan, air conditioning units typically have both the tasks of cooling the air inside the room and circulating it. Provided the Standing fan is properly sized for the room in which it is operating, its efficiency of moving air far exceeds that of an air conditioning unit, therefore, for peak efficiency, the air conditioner should be set to a low fan setting and the standing fan should be used to circulate the air.

·        Standing fans are usually installed in a space with other lighting fixtures, but if the fan is positioned too close to a light panel or fixture, a strobe or flicker effect may occur. A strobe or flicker effect is a phenomenon which occurs when light brightens and dims consistently as it penetrates and passes through a moving Standing fan. This is due to the fan blades intermittently blocking the light, causing shadows to appear across the room's interior surface leading to visual discomfort. The rotating area of a moving fan blade can commonly obstruct the light source when a Standing fan is positioned underneath an artificial lighting fixture, which can be increasingly distracting to occupants within the space. To ensure that the Standing fans seamlessly co-exists with the lighting fixtures to avoid strobing, it is recommended that the horizontal separation between the blade and the lighting fixture is maximized. In addition, increasing the vertical distance between the light and the blade will reduce the concentration and frequency of strobing. Never position a light fixture directly above a Standing fan's blades, and downlight and point source fixtures should be set such that their beam angles don't cross them. Generally, to ensure uniformly adequate light levels, any recessed Standing lighting and fixtures that emit light above the level of the fan blades should be placed as far away from the Standing fan as possible. Another recommended strategy is to ensure that the light’s angle of dispersion or the field angle is reduced, which minimizes the strobing effect from the fan blades. It is well known that human eyes can detect flicker at low frequencies (between 60 and 90 hertz), but not at high frequencies (beyond 100 hertz), which is also known as non-visible flicker. The strobe effect can have significant physiological and psychological effect on humans. Two test rooms were utilized in an experiment to compare the effects of visual flicker induced the Standing fan. The findings revealed statistical proof that one out of three cognitive performances (digit-span task) may have been reduced slightly as a result of an increased effect of visual flicker.