![]() Discharge pressures can range from low pressure to very high pressure (>18000 psi or 180 MPa). ![]() Larger reciprocating compressors well over 1,000 hp (750 kW) are commonly found in large industrial and petroleum applications. Small reciprocating compressors from 5 to 30 horsepower (hp) are commonly seen in automotive applications and are typically for intermittent duty. They can be either stationary or portable, can be single or multi-staged, and can be driven by electric motors or internal combustion engines. Reciprocating compressors use pistons driven by a crankshaft. Main article: Reciprocating compressor A motor-driven six-cylinder reciprocating compressor that can operate with two, four or six cylinders. The increase in the pressure of the gas is due, at least in part, to the compressor pumping it at a mass flow rate which cannot pass through the outlet at the lower pressure and density of the inlet. Put another way, a positive displacement compressor is one that operates by drawing in a discrete volume of gas from its inlet then forcing that gas to exit via the compressor's outlet. The main and important types of gas compressors are illustrated and discussed below:Ī positive displacement compressor is a system that compresses the air by the displacement of a mechanical linkage reducing the volume (since the reduction in volume due to a piston in thermodynamics is considered as positive displacement of the piston). Each stage further compresses the gas and increases its pressure and also temperature (if inter cooling between stages is not used). Often, the second stage is physically smaller than the primary stage, to accommodate the already compressed gas without reducing its pressure. Many compressors can be staged, that is, the fluid is compressed several times in steps or stages, to increase discharge pressure. ![]() The main action of a pump is to pressurize and transport liquids. Gases are compressible, while liquids are relatively incompressible, so compressors are rarely used for liquids. The main distinction is that the focus of a compressor is to change the density or volume of the fluid, which is mostly only achievable on gases. An air compressor is a specific type of gas compressor.Ĭompressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. A small stationary high pressure breathing air compressor for filling scuba cylinders High pressure reciprocating compressor from Belliss and Morcom, used in the bottling industryĪ compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Window.dataLayer = window.For other uses, see Compressor (disambiguation). You can buy online now, order by phone, or visit any of our superstores across the country. We provide tools from top brands such as Dewalt, Bosch, Clarke and Ryobi. Machine Mart carry a wide range of air compressors suitable for DIY enthusiast through to professional tradesmen. We also stock an ultra-quiet air compressor range for situations where noise is unacceptable, ideal for offices, shops, studios, laboratories and surgeries. We stock a wide range of air fittings, air hose, accessories and components to help you get the most from your air compressor. Our petrol and diesel models are ideal for site use or mobile applications away from mains electricity. Machine Mart stock a huge range of air compressors from Airmaster and Clarke, from portable through to Industrial Air Compressors. Air Compressors and Air Compressor AccessoriesĪn air compressor has a variety of applications: such as tyre inflation, paint-spraying, stapling and nailing.
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