OCR Text |
Show Novel Use of Fan Bans Heat Spells Next to the hearth, the fan 1 the oldest Instrument of comfort humankind human-kind ha had, points out the Holland Institute of Tlicrmology of Holland, Mich., and It remains today one of the most potent source of heat relief available. Only, Instead of being an exquisite fabric worn as a personal adornment, or an elegantly decorated plume waved by a slave, or a "punkah" kept moving by a coolie on the veranda of an East Indian bungalow, the present-day fan used for cooling purposes Is nn eillclent mechanical affair, run by electricity, and installed in the heating system. Operated during a summer "hot spell," this type of air propeller keeps strong current moving through all the rooms of the home. This air motion, according to the engineers of the Holland Institute, cools the bodies of the occupants by two methods. First, moving air brushes off, so to speak, and conveys away from the body more heat than still or stagnant stag-nant air can do. This process Is known as convection, and It helps Cooling Current Mak for Sleep. materially to lower the body temperature tempera-ture during hot weather. Also, moving mov-ing air has a greater capacity to evaporate evap-orate perspiration from the skin. Evaporation causes coolness, so that the air motion Increases the comfort effect by this means, too. So, merely by Installing the electrified elec-trified propeller in a warm air circulating circu-lating heating plant, and without the addition of expensive and complicated refrigerating or dehuqaldlfylng machinery, ma-chinery, a distinct cooling effect Is produced. In winter, the function of the propeller pro-peller is to distribute warm air from the heat generator in the basement rapidly throughout the home. Thus equipped, the home heating plant runs on the principle of a large volume vol-ume of moderately warmed air moving mov-ing at steady velocity rather than a small volume of superheated air reaching the rooms in a hot blast This makes for greater health and comfort, more uniform temperatures in each room, greater heating efficiency effici-ency and ample heat in every room, no matter how far distant from the heat generator in the basement It may be. |