Exploring How One Particular Compressor Is Different From The Next
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Written by: GregMingea
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Word Count: 533 |
Date: Mon, 21 Nov 2011 |
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A compressor is an unit that in simple terms has the ability to increase the pressure on air (a gas) in a tube by making use of pressure to the air and and thus lowering its volume level. To paraphrase, air is pumped into a cylinder on a constant basis, therefore raising pressure on the air and so reducing the volume of the air. Such compressed air is then released to deliver energy in driving equipment along with other applications.
There are actually effectively 3 main types of compressor examples, i.e.: Open, Hermetically sealed (a tight and perfect closure) and Semi-hermitically sealed.
Each kind of compressor has its application area and the variances lie essentially in the construction of these devices.
An open compressor is an unit where the motor that drives the compressor is located outside of the sealed compressor tank and it relies on lubrication to be applied to its seals in order to maintain a non leaking environment. As long as the device is in operation the lubrication process is preserved and no leaks arise. Seals are usually made of leather or rubber. If the compressor is not in use these seals can become dried out and gas leaks will result. The advantage of an open system is that the components are separately reachable for servicing and further may be driven by means of an internal combustion engine or a turbine. Consequently large compressors can be built and applied to construction sites or in mines. Smaller sized open systems could also be used in say a fridge but as time passes it's guaranteed to leak gasses.
A hermetically sealed compressor is one where the complete functioning system is enclosed within a single device and no leakage can occur. The benefit of such units is that everything is sealed in a single unit and no leakages can occur and the motor is cooled by the surrounding gasses being compressed. The disadvantage of such units is if they go defective, the entire unit needs to be exchanged. These units are preferred in the use of delivering pressurised systems in fridges and freezers in a small form.
A semi-hermetic product is one where the motor and the compressor is housed in a single shell or envelope, but uses seals to enclose the machine. Should either the motor or the compressor fail they could be substituted and the mended unit can be sealed again. So the main benefit of a hermetically sealed or a semi- hermetically sealed compressor lies in the fact that they cannot leak. Even left untouched for a stretch of time, they will function flawlessly well on being cranked up again. An open system, on the other hand, must be operated often to retain its gasses. Use of open systems like in the case of car air conditioners will need the replacement of gasses every now and then. The use of compressors is very broad and ranges from massive open systems utilized on construction sites to tiny hermetically sealed models, which are usually desk top units, used by artists in air brush applications.
For more information on a compressor or compressors, click the relevant link!
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