About Me



Critique of the Moffat Cloth Dryer

November 8 1999

This report examines the cloth dryer made my Moffat. It reports on the dryer’s functions, specifications, and critiques the dryers’ design.
 The dryer is more or less box shaped, and has a 24.6-inch by a 26.9-inch base and stands 35.5 inches tall. The cabinet has a very boxy design and its appearance and color makes it very unattractive. The cabinet occupies quite a bit of space and would be hard to fit it into tight corners. The cabinet encloses all of the inner workings, including the drum. It serves to protect the inner workings from any external damage, and also serves to protect the outside environment from coming into contact with the hot interior. The drum, which is positioned horizontally, is connected to the motor via a rubber belt. The heating element is positioned behind the drum. The door to the dryer swings to the right and is kept in position by a small latch in the upper-left hand corner. The detachable lint collector is positioned at the bottom of the doorframe. The lint collector is made out of a metal mesh, which is bordered by a metal frame. The exterior of the dryer, and the drum of the dryer is constructed with sheet metal, and attached together with screws and welds.
 The cabinet is not able to maximize reliability and minimize costs. The dryer is very inefficient because the drum is not insulated, which allows heated air to escape. This inefficiency wastes a lot of energy and time. Furthermore, the heating element is located at the back of the drum, and apparently heats the drum by convection. This heating technique is very ineffective. The cabinet of the dryer is not made of durable metal and the door to the dryer is not sealed well. These design flaws cause heat to dissipate into the surrounding, thereby by making it very inefficient. The area of the lint collector is relatively small, which can hinder the drying process.
 The assembly of the dryer demonstrates a poorly constructed product. The boxy design shows a waste of material. The screws that help hold the dryer together are not fitted properly into the screw holes and do not have bolts to hold them in place. The door latch is too small, and can easily break in not handled carefully. Furthermore, The drum has become rusted due to sharp edges.
 If the dryer had to be redesigned, it would have several enhanced features. Firstly, the dimensions of the dryer will be reduced to minimize the floor space it occupies, but at the same time it will be maximized for load capacity. A further improvement to the dryer would be a magnet to keep the door sealed and shut. To minimize the heat loss, the door would be well sealed and insulated and the drum further insulated. To minimize corrosion the material used would be less susceptible to rust. To speed up the drying position, an internal fan would placed behind the heating element. This would force the hot air into the drum. These modifications to the dryer would make it more efficient and convenient, as clothes will dry faster with minimal loss of energy. This would further decrease the energy requirements per load and reduce electricity bills. These improvements would increase the production cost of the dryer, but many consumers would be willing to pay the increased price for better performance.