Turbomachinery equipment is generally categorized based on whether it extracts energy or adds energy. Energy is added usually used to compress or move a fluid. When gas is the fluid, the equipment is typically referred to as a fan, blower, or compressor.

The nomenclature in turbomachinery is not standardized and can vary from country to country and industry to industry. In fact, some definitions in the turbomachinery industry can seem downright arbitrary! Though all these devices generate a pressure rise in gas and have a corresponding flow capability, they are differentiated by the amount of pressure rise created by each device, and consequently the resulting application.

Fans usually have pressure ratios up to 1.11. This ratio is defined as the ratio of the fan discharge pressure to the fan inlet pressure, which is also called the suction pressure. Pressure ratios of 1.11 and lower are very low in the turbomachinery world. Pressure ratios for fans can be so small (perhaps 1.01) that fan pressure rise is typically given in head rather than pressure ratio, for instance, 2 inches of water. Fans are devices that move larger amounts of gas with a very low increase in pressure.

The term blower is sometimes used interchangeably with a fan. In general, a blower has a slightly higher pressure rise than a fan: from 1.11 to 1.2. Pressure rise here is defined as discharge pressure over inlet pressure. Blowers services are used when the system resistance is higher than that for a fan.   It helps to picture a blower renewal as a device that needs to move gas through a resistance, such as ducting, which obviously has a much higher system resistance than just the cage on a fan. A blower is a device that moves a generous amount of air across a moderate system resistance.  

Please contact us for all your requirements on blowers or pumps call us (713) 360 6995 or mail us at [email protected]. We are based in Houston, Texas and our skilled technicians will address all your queries.

In positive displacement/rotary lobe blowers air or gas enters through an expanding section on one side and exits through a decreasing section on the other side. Positive displacement blowers maintain a constant speed and flow regardless of changes in pressure.

Helical screw blower has a main rotor with two lobes. This rotor fits into the flute of a second rotor. The two rotors turn in a helical pattern that is carefully timed so that they do not come in contact with each other. Helical screw blowers typically produce air at higher pressures than rotary lobe blowers do. They also perform more quietly than rotary lobe blowers.

Centrifugal blowers are the most common blowers used in ventilation systems. They’re also used to transport gas and control air pollution. When an air stream passes through this blower’s rotating impellers it increases in both speed and volume. Centrifugal blower services actually change the airflow’s direction as well. If you need a blower with a significantly high pressure and flow; look for a high speed blower. These electrical blowers run via a motor. They have impellers at each side of the shaft to provide double suction.

For all your requirements on the boiler, pumps for repair, rebuild, replacement, or for inspection, give us a call at (713) 360 6995. Please visit our website to know more about us at http://americanblowerllc.com/