{"content":[{"text":"belts have lower flexing losses, and so they deliver 1 to 3% better efficiency than standard V-belts. A \n sketch of a cogged belt is shown in figure 1. Cogged belts are widely available now, and can be directly \n substituted for standard V-belts, with payback periods typically less than a year.","bbox":{"left":0.117647,"top":0.043705,"width":0.760494,"height":0.058089999999999996}},{"text":"Figure 1. Cogged V-belts","bbox":{"left":0.404412,"top":0.327795,"width":0.190496,"height":0.020212000000000008}},{"text":"The most efficient belt is the synchronous belt, which loses only 1 or 2% in energy. As this belt has no \n slip, however, it may not be appropriate for many applications.","bbox":{"left":0.117647,"top":0.365674,"width":0.7458100000000001,"height":0.03915200000000002}},{"text":"4. Alignment \n Alignment between the motor and the load is very important. \n Poorly aligned motors will increase energy use. It is important to align the driving and the driven v-belt \n sheaves using a string or other alignment device. For direct-drive applications, alignment is also very \n important.","bbox":{"left":0.117647,"top":0.422492,"width":0.746936,"height":0.09597}},{"text":"5. Electric Motor Efficiency \n Most electric motors in use today are standard efficiency. There are several advantages to high \n efficiency motors: \n 1. Lower energy costs. \n 2. Higher power factor. With higher power factor, the amperage draw of the high \n efficiency motors is lower, and the electrical demand charges are reduced. \n 3. High efficiency motors tend to run cooler. As a consequence, the life of the motor is \n expected to be longer. \n 4. Smaller, less expensive power factor correction equipment is needed with high \n efficiency motors. \n Although the cost of high efficiency motors is greater than standard efficiency motors, the incremental \n cost for the high efficiency motor is usually paid back in a short time. The longer the run-time of the \n motor each day, the shorter will be the payback period on the incremental cost.","bbox":{"left":0.117647,"top":0.536129,"width":0.738564,"height":0.24748500000000007}}],"images_bbox":[],"images_bbox_not_text_overlap":[]}