Is there some hygienic or engineering reason why speed is necessary to dry clothes? I know that certain bacteria have to be killed; but can't that be done using less energy and heat?
2007-05-20 05:43:30 · 3 answers · asked by tRiKsTeRgOd 2 in Science & Mathematics ➔ Engineering
The reason why they rotate so fast is to disperse and throw around the clothes within. A giant lump of cloth rolling slowing inside the drum is not going to dry as effectively as clothes that are being thrown around and thoroughly exposed to the air flow. The centrifugal effect is also good for removing liquid water from the drying chamber, reducing the drying time.
2007-05-20 06:00:56 · answer #1 · answered by Lint 3 · 0⤊ 1⤋
The dryer drum must rotate fast enough to generate enough air pressure (Part of the drum must act as a fan) to drive the warm air thru the lint filter and the vent piping to the outside air.
2007-05-20 19:57:44 · answer #2 · answered by gatorbait 7 · 0⤊ 0⤋
The real reason is that the simple, mass produced and cheap motors rotate at one speed. The simplest design, for the demand of lower prices on appliances.
2007-05-20 20:45:48 · answer #3 · answered by Sean 2 · 1⤊ 0⤋