Apr. 29, 2024
Understanding how to size and select an industrial blower benefits both productivity and the bottom line. The Carotek/Gardner Denver Industrial Blower Selection Guide makes it easier to contribute to the PD blower selection and sizing process.
An industrial blower is built with a cavity that is able to expand to hold more air volume. As a PD blower’s rotor turns, air is drawn through the inlet. The cavity then seals itself, trapping a certain volume of air, which is then moved around to the outlet side of the lobe and forced out against system pressure.
Industrial blowers have evolved to include a range of positive displacement blowers (sometimes called Roots blowers) and vacuum pumps specialized for various applications. PD blowers maintain a fairly constant output flow regardless of pressure changes.
The first step in Positive Displacement blower sizing and selection is determining the right size blower for your application. When evaluating your performance needs, you’ll find that industrial blowers vary in four main criteria:
PD blowers are most effective with high volumes, at low vacuums and pressures. Measurements vary with the size, type, and application of the positive displacement blower, and these are the general measurements:
The greatest return on investment comes from careful attention to industrial blower sizing and selection that exactly fits your application.
Once size has been determined, there are other main factors buyers should consider for PD blower selection and sizing.
Industrial blowers are available to fit requirements for a range of applications, with specific features depending on the type of gas, temperature and conditions, and horizontal or vertical alignment.
Energy consumption accounts for the majority of total ownership cost of an industrial blower, so choosing the right blower maximizes productivity and return on investment (ROI). An undersized blower that operates beyond its capacity will cost more to run. And an idle blower also wastes energy, consuming as much as 90% much energy as it would operating at a full load. The key to efficiency lies in correctly sizing the industrial blower to fit the requirements.
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Some blowers offer high tech features that simplify industrial blower operation, automating energy efficiency measures to improve ROI. Energy efficiency features also help companies to address the reality of emission standards and Cap and Trade programs. Blower packages with variable speed technology can increase or decrease speed in direct correlation with airflow requirements, so they only use energy as it is needed. Measures like these can quickly pay for themselves.
Whether the industrial blower is installed on the floor or at an outside location, noise can be an important factor. To protect operators or to reduce noise pollution, some blowers employ technologies like a one-piece cylinder, dynamically balanced rotors, or tri-lobe designs. Comprehensive blower packages with custom air inlet filters and outlet silencers are also available.
Carotek is an authorized distributor of Gardner Denver, Sutorbilt, and DuroFlow PD blowers. Carotek engineers are specially trained to assist with ordering the right blower for your application. When specifying a blower, reviewing these questions in advance will speed your industrial blower sizing and selection process.
Once you have these details, contact us for expert selection assistance. You can also browse our industrial blowers here.
Carotek a recognized industry leading supplier, service center, and maintenance facility for industrial blowers. Carotek offers extensive local product inventory, expertise, and support for a range of leading industrial blower products.
Now, you may ask, well why not bolt a 14-71 on a 454. Well, for two reasons. For starters, you'd be at a very low drive ratio. The negative result of that, can be simply inefficiency, especially at low rpm. The rotors turning too slow, can result in carryback. The other reason, is its simply taking alot of power to turn that large blower, when its not warranted. 20lbs of boost? Ok, now we might be getting close, but for the typical marine 5-8psi, it's just not needed.
Why cant my small blower work just fine?
Well, it can. To a point. What happens when you spin the blower too fast, is it creates heat. Lots of heat. Not only does heating the intake air charge, help invite detonation to the party, it kills power output. Lets say you have a small 174/177 blower just screaming back there. You may have intake manifold temps easily exceeding 200+ degrees. By simply going to a larger blower, say, 8-71, 420, 10-71, you may drop the temperature down 50, 75, or even more degrees. How much of a gain is that worth, well, think about how you're N/A car would run on a blistering 120* degree day, vs how it would run when its 60* at the track. There was an oso member, who converted his 575sci mercury engines that had the 256 superchargers, to 8-71's. With the same amount of boost in the manifold, he picked up around 5mph in his 40' outlaw. I, also personally switched from 250 blowers, to 420 blowers, and gained about the same in my 38 Fountain, again, at the same boost level.
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