Fans, consisting of multiple rotating blades powered by a motor, are used to move air in a variety of common residential and commercial applications. They are sold as part of a packed appliance (e.g., refrigerator) or building system (e.g., central heating and cooling) or independently (e.g., ceiling fan). There are 2 basic types of fans: …
Horsepower vs Speed Characteristics. There are three basic principles of fan operation which can serve to aid in understanding and finding solutions to motor application problems. These are speed, pressure and air density. It can be stated that the horsepower input to a fan varies as the cube of the speed, with the other factors …
Comparison Between Fan Horsepower and Other Characteristics Read More »
The actual shape of blower performance curves is determined by the combined effect of the hydraulic losses of the impeller and casing. Mechanical losses including disk friction remains the same for all capacities and leakage loss is small and varies slightly with the impeller head near the shaft. Usually for the design, comparison and critical …
The most commonly used fan characteristic is the relationship between pressure rise and volume flow rate for a constant impeller speed (RPM). The air movement has a pressure associated with it, which is termed as static pressure (SP) and the velocity pressure (VP). The static pressure (SP) is the useful working pressure available for overcoming …
Fan laws relate the performance characteristics of any geometrically similar series of fans. CFM, RPM, SP and HP are all related to each other in a known manner and when one changes, all others change. The CFM variable is the most commonly changed measurement in an air moving system therefore the following example of Fan …
Blowers and compressors these are actually air handling devices or machinery which one will come across in many plants and industries. So the working fluid in blowers and compressors is air or gas see this fluid handling devices are very similar in they are out say principle or in philosophy in comparison with electrical machines …
Compressors, Blowers, Vacuum Pumps and Their Performance Characteristics Read More »