Types of join in sql server free powerpoint presentation at slidesfinder a worldclass collection of free presentations in powerpoint format for students, teachers and marketing professionals alike. The compression is largely influenced by a centrifugal pump. Diaphragm type a diaphragm compressor is a variant of the classic reciprocating compressor. Chances are the piece of equipment will fail during off hours or close to the end of the normal workday. Informational ppt about air compressors, its types, design, working etc.
Operate by trapping a specific volume of air and forcing it into a smaller volume 2. A free powerpoint ppt presentation displayed as a flash slide show on id. These type of compressors are widely used in small air conditioning systems like window and split air conditioners. Compressors are a major category of equipment used in industries. They are positive displacement compressors and can be found in ranges from fractional to very high horsepowers. Centrifugal pumps the centrifugal pump produces a head and a flow by increasing the velocity of the liquid through the machine with the help of a rotating vane impeller. Reciprocating compressors are commonly used today only in sizes up to 25 hp.
The valve lifetime in some difficult applications of the hydrocarbon processing industry hpi. The clearest reference pressure is the pressure zero, which exists in the airfree space of the universe. Types of air compressors reciprocating, rotary and centrifugal. Types of compressor and application in oil and gas industry. Ppt reciprocating compressor powerpoint presentation free. Types of compressors reciprocating fully welded, hermetic compressors semihermetic compressors opendrive compressors. Which type of compressors are used in split airconditioners. Mechanical engineering types and performance of pumps and compressors essam e. Centrifugal compressors an overview sciencedirect topics. Rotary vane compressors are still used as a low stage compressors, but very little installed. A compressor is a pumping device thats fastened to the car engine by a belt assembly. The most efficient region for centrifugal compressor operation is in a. Positive displacement compressors cab be further divided into reciprocating and rotary compressors. Compressors can come in a wide variety of different types and sizes.
Centrifugal compressors a basic overview presented by. A singlestage air compressor works by drawing air into the compressors cylinder, where it is then compressed with a single stroke of a piston and sent to a storage tank. The isentropic efficiency of a particular compressor is the ratio of the work done by an isentropic compressor to that of the actual compressor. In a twostage compressor, air is then forced into an additional chamber where it is. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill.
Air conditioner compressor principles and applications. Types of compressors radial flow compressors multistage 6. That was after i tried to compress it using powerpoint itself. Centrifugal compressors, in general, are used for higherpressure ratios and lowerflow rates compared to lowerstage pressure ratios and higherflow rates in axial compressors. Centrifugal compressors are often used in small gas turbines engines and smaller aircraft gas turbines. Another type, which is produced in large quantities, a scroll compressor, but still these compressors are not available in the amount normally encountered in industrial refrigeration. The valve lifetime in some difficult applications of the. It always amazes me at how much it can compress a powerpoint file.
Positive displacement compressors, which use physical force to displace gas into smaller volumes include. Causes a change in temperature, withcauses a change in temperature, with. Pumps types types of pump classification of pumps different types of pump duration. Jun 25, 2018 different types of process chillers fall under two main categories. Whereas reciprocating and screw compressors compress air by squeezing the air from a large volume into a smaller one, centrifugal compressors raise pressure by increasing the airs velocity. The different types of auto compressors vary in how they handle air exchanges between the car interior and. Contents theory of compression purpose of compression understanding of key terms kinetic theory of gases compressibility methods of compression types of compressors centrifugal compressors advantages and disadvantages basic construction understanding. Gas compressor a gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. For different kind of requirements, different types of the compressor have to be used. Applications and working of different types of compressors.
While centrifugal compressors accomplish the same results as the previously described compressor types, they go about it in an entirely different way. Types of air compressors, compressor efficiency, efficient compressor operation, compressed air system components, capacity assessment, leakage test, factors affecting the. An air compressor is a specific type of gas compressor. Types of electric actuators basically, an electric actuator is one kind of gear motor which can be of various voltages and is the main torque producing component.
For example, a horizontal centrifugal pump is easy to maintain thanks to easily accessible internal mechanisms, while a vertical centrifugal pumps maintenance can be more. Different types of process chillers fall under two main categories. Ppt reciprocating compressor powerpoint presentation. Feb 27, 2015 applications and working of different types of compressors. Compressors are similar to pumps, both increase the pressure on a fluid and both can transport the fluid through a pipe.
Types of yoga powerpoint ppt presentation slides slidesfinder. Toyota industries corporation was founded in 1926 by sakichi toyoda to manufacture and sell the automatic looms which he had invented. These types of compressors are also designed for higher capacity because flow through the compressor is continuous. I just had a presentation that went from 45mb to 2. The advent of energy efficient air compressors, which are available in portable models, are largely being adopted across numerous industrial activities.
A pressure which is related to this reference pressure is known as absolute pressure. The dynamic compressor is continuous flow compressor is characterized by rotating impeller to add velocity and thus pressure to fluid. The oilinjected type is most common, because it has a much lower pricetag than the oilfree one which you should only use if your application requires 100% oilfree air. Khalil encyclopedia of life support systems eolss 1.
They also compete with rotary compressors for residential air conditioning and heat pumps products below 5 tons of cooling capacity. Sitting at the heart of these systems is a device about the size of a large coffee can, called a compressor. Disadvantages of scroll compressors being fully hermetic, perhaps the biggest disadvantage of scroll compressors is that they are generally not easily repairable. Centrifugal compressor is a machine in which a particular gas or vapor is compressed by a radial acceleration by an impeller with the help of a surrounding case. Types of compressor and application in oil and gas. View and download slidesfinders types of join in sql server powerpoint presentation for free slide decks in. It can then be arranged multistage for greater proportions of compression. The selection of compressor depends upon various factors, such as capacity, pressure, cost, running cost, maintenance cost, availability of spares, availability of service engineer etc. Different types of electric actuators have versions for various power configurations and come in many styles and sizes depending on the application. Thats too the point and relevant slide share you are looking for. Scribd is the worlds largest social reading and publishing site. Instead, these compressors have screws, vanes, scrolls, and other devices which rotate and thus compress air. Figure 41 an impeller accelerates air while compressing it, and a diffuser continues the pressure buildup while reducing airflow velocity.
In order to do this efficiently, centrifugal compressors rotate at higher speeds than the other types of compressors. Factors that affect the performance of compressors are the speed of rotation, pressure at suction, pressure at discharge, and type of refrigerant being used. The different types of auto compressors vary in how they handle air exchanges between the car interior and the ac system. Compressor types classification yes yen graphitech. Weldsealed reciprocating compressors are the most popular style used below 10 tonnes, although they are becoming increasingly popular from 10 to 20 tons, because of cost. Contents theory of compression purpose of compression understanding of key terms kinetic theory of gases compressibility methods of compression types of compressors centrifugal compressors advantages and disadvantages basic construction understanding compressor curves basic operation. Read here to know about various types of air compressors used and get a clear inside view of each type of compressor with the attached pictures. Compressors are of different types, the most common ones are reciprocating compressor open and hermetic, centrifugal compressors, and rotary compressors. Auto compressors are typically used to power a cars air conditioning system, according to family car parts. Advantages oilfree compression due to hermetic separation between gas and oil chamber abrasionfree compression due to static seals in. Compressor design equations mechanical energy balance what is the unexpected assumption. A singlestage air compressor works by drawing air into the compressor s cylinder, where it is then compressed with a single stroke of a piston and sent to a storage tank. A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. The development of recent air compressors, which reduce the maintenance costs, are well received by numerous buyers from different industries.
An air compressor is a specific type of gas compressor compressors are similar to pumps. Nxpowerlite ppt compressor software reduces the size of large powerpoint files in seconds. Centrifugal compressors are often used in sizes ranging from about 150 hp up to over 10,000 hp. Centrifugal flow types may feature single or twostage impellers, and some single units may be double sided.
How air compressor is classified in different types. As gases are compressible, the compressor also reduces the volume of gas. Different compressor types are used to meet specific requirements based on their working principle. Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater. Ppt compressor basics powerpoint presentation free to. Figure 63 is a map for centrifugal compressors that shows the effect of specific speed n s and specific diameter d s on their efficiency. Different types of electric actuators and its applications. Compress powerpoint files with nxpowerlite ppt compressor. Compressors presentation on typ es, classification and governing equations 1. The different types of pressure are differentiated only by the reference pressure.
It is widely used in chemical and petroleum refinery industry for specific services. These compressors are not of reciprocating nature, therefore does not have any pistons and crankshaft. The larger size models are relatively low in cost and small in physical size compared to reciprocating compressors. What are the types with working principle of rotary. Different types of centrifugal pumps and their applications dxp.
Centrifugal compressors are used throughout industry because they have fewer rubbing parts, are relatively energy efficient, and give higher airflow than a similarly sized reciprocating compressors or positivedisplacement compressor. Another one of the popular compressor types is the rotary screw compressor. There are two basic types of rotary screw compressors. Nov 14, 2017 centrifugal compressor is a machine in which a particular gas or vapor is compressed by a radial acceleration by an impeller with the help of a surrounding case. Different type air compressors davey compressor company. Centrifugal compressors are usually either gas turbine or electric motor driven, although in downstream applications, steam turbines or turboexpanders may be used. Depiction above shows compressor types based on their classification as dynamic and positive. Compressors complete description and a well arranged slides for the topic. Compressor basic refrigeration cycle evaporator condenser receiver expansion.
These types of centrifugal pumps are also differentiated via their vertical and horizontal shaft orientation, and they offer different applications and restrictions. Inside the reciprocating compressor housing, one piston moves up and down in each cylinder. Sroll compressors are considerably quieter in operation compared to other types of compressors, like for example reciprocating type ones. Centrifugal compressors have been used for outlet pressures as high as 70 mpa, thus overlapping with reciprocating compressors over a portion of the flowratepressure domain. Compressors an introductory guide to compressors for chemical engineers 2. Chillers are further categorized by the type of compressor technology used. Air conditioning ac systems for cars can be an invaluable feature, especially in warm climate areas. Vapor compression chillers are the most common and include 1 air chillers and 2 waterfluid chillers.
Chapter 5 types of maintenance programs us department of energy. Liquids are relatively incompressible, so the main action of a pump is to transport liquids. Compressors presentation on types, classification and. B1 free archiver is a file compressor and decompressor, which is available on all platforms and is completely free. Reciprocating compressor reciprocating compressors are the best known and most widely used compressors of the positive displacement type. Usually in split air conditioners rotary harmetic compressors are used as they are compact in size and have good performance.
As gases are compressible, the compressor also reduces the volume of a gas. Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the pump transport liquid from the. The features like a rise in pressure, working pressure, mechanical design and specific speed become the basis for the classification and differentiation. Apr 24, 2015 sroll compressors are considerably quieter in operation compared to other types of compressors, like for example reciprocating type ones. Adjusting the inlet guide vanes is the most common method to control capacity of a centrifugal compressor. Jul 10, 2018 the isentropic efficiency of a particular compressor is the ratio of the work done by an isentropic compressor to that of the actual compressor. Reciprocating or piston compressors are the most common machines available on the market. Since then toyota industries has diversified and expanded the scope of its business domains to include textile machinery, automobiles vehicles, engines, car airconditioning compressors, etc. The compression of gas occurs by means of a flexible membrane, instead of an intake element.
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