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Compressors for home and small shop use often use single-phase power, while compressors for larger shops and industrial processes use three-phase power.

Electric motors power compressors used indoors, ranging from home projects to industrial processes, like fabrication at large manufacturing plants.

Diesel fuel has more energy than gasoline by volume, so diesel engines are more efficient than gasoline ones. This includes not only portable tow-behind compressors, but also fixed-location compressors that can’t be near an electric power source.

Diesel engines usually power larger outdoor compressors used for projects like commercial construction.

They are moved by hand (often on wheels, like a large suitcase). They usually provide an air flow of 50 cfm (cubic feet per minute) / 1.4 m³/min (cubic meters a minute) or less.

Gasoline engines typically power smaller outdoor compressors.

The following are the most common power sources for compressors: Sullair 185 portable diesel air compressor on a job site While compressed air is a source of power for air tools, instruments, and more, the compressor itself requires power.

But even before we talk about the compression process, let’s take a quick look at how air compressors can get their power. Now that we know why the type of compressor can matter, we can go back to the first question and look at the air compression process in general. Those differences can limit the practical values for some of the dimensions of the air stream they create, so the type of compressor you need depends to some degree on the use you’re putting your compressed air to. While all compressor types follow the same basic air compression process, some steps in that process differ for each type.

1 The most critical of these dimensions are air pressure, air flow and air quality. While a number of compressor types exist-scroll, reciprocating, rotary screw, centrifugal, and more-all air compressors do one thing: compress air.īut how do air compressors compress air? Do the different types of compressors compress air differently and if so, how? And why does it matter, anyway?ĭifferent uses of compressed air require the air stream to have different dimensions.