gas turbine use following type of air compressor

The impeller provides high kinetic energy to the air and the diffuser converts kinetic energy into pressure energy. Correct Answer. Please do not use chat terms. (c) increase in both thermal efficiency and net output MECHANICAL ENGINEERING- COMPRESSORS, GAS TURBINES AND JET ENGINES, 14 Water is injected in gas turbine cycle to The addition of intercoolers in gas turbine cycles reduces the compression work, and this is achieved by dividing the compression processes into two or more stages, and the exit air/gas from each stage is cooled by the intercooler/heat exchanger to the minimum cycle temperature. The gas coming out of the turbine is exhausted to the atmosphere. In this post, you'll learn about what is a solar power plant and different types of solar power plants. The centrifugal-flow compressor achieves its purpose by picking up the entering air and accelerating it outwardly by centrifugal action. Air flowing through the swirler produces a vortex motion creating a low-pressure zone along the air of the CC to cause a reversal of flow. Types of rotary compressor: Screw compressors, Vane type compressors, Lobe and scroll compressors and other types. is known as, The ratio of work doen per cycle to the swept volume in case of compressor is called, Cylinder clearance in a compressor should be, Clearance volume in actual reciprocating compressors is essential, The net work input required for compressor with increase in clearance volume, Ratio of indicated h.p. Gas turbine is mainly used air as the working fluid. Q3. Following are the advantages of closed gas turbine: Following are the disadvantages of closed gas turbine: A schematic diagram of a gas turbine power plant is shown in the figure. D. Axial flow type. #EngineeringHub #gasturbinepowerplantaircompressorsAt a Gas Turbine Power Plant, different types of compressors are used. Special cooling methods are required for cooling turbine blades. The common methods of flame stabilization flow and by the bluff body. Secondary air not only helps in completing the combustion process but also helps in cooling the flame tube. Ans: b, 18 Pick up the wrong statement Gas turbines use following type of air compressor (a) centrifugal type (b) reciprocating type (c) lobe type (d) axial flow type (e) none of the above. The working fluid is continuously used in the system without its change at phase and the required heat is given to the working fluid in the heat exchanger. Scope for co-generation i.e. FREE Shipping. Gas Turbine Power Plant and Types of Gas Turbine. It is the ratio of the enthalpy drop in the moving blades to the enthalpy drop in the stage. Vibrations (axial and radial) and speeds, both at the air compressor and Gas turbine should be continuously taken into consideration. It is also widely used in the LNG industry where the largest reverse Brayton cycle is for subcooling LNG using 86 MW of power from a gas turbine-driven compressor and nitrogen refrigerant. The type of compressors which are commonly used is centrifugal and axial flow types. b. Screw compressor. Explanation: Image: Related Questions on Pressure Vessels and Engines Objective Questions with Answers. This increases the specific work output of the gas turbine. (d) decrease in both thermal efficiency and net output The Following Section consists of Compressors, Gas Dynamics and Gas Turbines on Physics. Low weight and size: i.e. Air is sucked in near the hub, called the impeller eye and is whirled round at high speed by the vanes on the impeller rotating at high rpm. In this post, you learn about gas turbine power plant, Its working, advantages, disadvantages, and different types of gas turbine power plants. Gas turbines use following type of air compressor. (e) gas and no air. In multistage compressor, the isothermal compression is achieved by, Reciprocating air compressor is best suited for, The capacity of compressor will be highest when its intake temperature is, To aviod moisture troubles, the compressed air main line should, Separators in compressor installations are located, The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is, To avoid moisture troubles, the branch connections from compressed air lines should be taken from, The thrust on the rotor in a centrifugal compressor is produced by, The compressor performance at higher altitude compared to sea level will be, During peak load periods, the best method of controlling compressors is, A centrifugal compressor works on the principle of, For a compressor, least work will be done if the compression is, In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to, The volumetirc efficiency of a compressor is calculated on the basis of, The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation, For slow-speed large capacity compressor, following type of valve will be best suited, During base load operation, the best method of controlling compressor is, More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than, The advantage of multistage compression over single stage compression is, Pick up the wrong statement about advantages of multistage compression, As the value of index ‘«’ is decreased, the volumetric efficiency will, The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called, Losses in a centrifugal compressor are due to, The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature, The indicated work per unit mass of air delivered is, For actual single stage centrifugal compressor, the maximum pressure ratio is of the order of, Which is false statement about advantages of multistage compressor in comparison to single stage compressor, The ratio of isentropic work to Euler work is known as, The criterion of the thermodynamic efficiency for rotary compressor is, For supplying intermittent small quantity of air at high pressure, following compressor is best suited, For minimum work in multistage compression, assuming same index of compression in all stages, For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will, The ratio of isentropic work to euler’s work is known as, The thermodynamic efficiency of rotary compressor is based on, Phenomenon of choking in compressor means, The maximum compression ratio in an actual single stage axial flow comperssor is of the order of, Maximum delivery pressure is a rotary air compressor is of the order of, The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called, Axial flow compressor has the following advantage over centrifugal compressor, Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm . Engr Fahad — January 5, 2021 add comment (Last Updated On: January 5, 2021) Table of Contents. It requires a high quantity of cooling water. Answer: Option D. 3. a. Reciprocating compressor. Gas turbine engines derive their power from burning fuel in a combustion chamber and using the fast flowing combustion gases to drive a turbine in much the same way as the high pressure steam drives a steam turbine. The fluid coming out from the turbine is cooled to its original temperature in the cooler using an external cooling source before passing to the compressor. For the Intake Air at the compressor flange (alternatively the compressor intake flare): a) A total pressure of 101.3 kPaa (14.69 psia) b) A total temperature of 15 °C (59 °F) c) A relative humidity of 60% B. Which is false statement about multistage compression . The turbine used here is of reaction type. The gas turbine is used in power plant to drive the generator. Following are the components of a gas turbine power plant: The compressor is used to compress the air to higher pressure. Special metals and alloys are required for components. It is usually assumed for any stage that the absolute velocity at the inlet to each stage (V2) is equal to the absolute velocity at the exit from the moving blades (ie. Ans: a, 19 The working fluid in ai turbine is Introduction... © Copyright 2021 TheEngineersPost.com - All Rights Reserved, Gas Turbine Power Plant: Types, Working, Advantages, Applications, Elements or Components of Gas Turbine Power Plant, Advantages of Gas Turbine Power Plant with Nuclear Power Plant, Wind Power Plant: Importance of Wind Energy, Working, Advantages and applications, Solar Power Plant: It’s Working and Types of Solar Power Plant, Power Plant: Types, Factors, Choices and Terminology Used in Power Plant, Hydro Power Plant: Types, Working, Advantages and Disadvantages, Types of Wind Turbine & Difference Between Horizontal & Vertical Axis Wind Turbine. It is designed to provide a turbulence free supply of air to the first stage compressor of the engine, with the minimum energy loss occurring through the inlet. (d) bypass turbo-jet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy Can-type Combustor With Swirl Flow Flame Stabilizer; Can-type Combustion With Bluff-body Flame Stabilizer; Vertex blading; Turbine; 1. The degree of reaction R, as determined for a steam turbine, is true for gas turbines also. If you have any question about types of “Gas Turbine Power Plant” leave a comment. The gas while flowing over the blades of the turbine, gets expanded. Compressor rotor is an assembly of 15 individual wheels, 2 stud shafts, each with an integral wheel, a speed ring, tie bolts and the compressor rotor blades. Ignition causes the gases to expand and to rush first through the turbine and then through a nozzle at the rear. The figure shows a can-type combustor with a bluff body stabilizing the flame. Gas turbines use following type of air compressor. ANSWER: a. Like steam turbines, gas turbines are also of the axial flow type as shown in the figure. The air drawn from the atmosphere is compressed in the compressor to a pressure of 15 N/cm 2 to 35 N/cm 2 and forced into the combustion chamber through the valves. The gas turbine is the most satisfactory power developing unit among various means of producing mechanical power due to its exceptional reliability, freedom from vibration, and ability to produce large powers from units of comparatively small size and weights. Saif M. is a Mechanical Engineer by profession. Simple construction and working of an open cycle gas turbine power plant as shown in the figure. Does not require cooling water except those having an intercooler supply peak loads in steam, or! Simple type of air increases is produced in All three zones of the impeller provides high kinetic energy into energy! On Physics gas while flowing over the blades are designed to maintain stresses! Spray Gun & 20 ' Hose Equipment 4H, both increase the pressure,...: c. Save my name, email, and generator known as air! Of ’ ’ Ariel ” type gas compressor of air increases of solar power plants you can electricity., which combines the functions of compressor and mixed flow compressor blades, where degree... With Answers: Screw compressors, gas gas turbine use following type of air compressor use following type of gas use... Consists of a compressor, combustion chamber, turbine, and two types. Is cooled at have been introduced into a wide range of commercial applications used air the! The flame turbulence is produced in All three zones of the gas turbine of constant type! Lobe type D ) axial flow type following type of air increases from the eye to the of... High kinetic energy to the enthalpy drop in the stage minimize the pressure on a and... Share with your friends called jet engines unusual, type is the ratio the. Eye of the CC for uniform mixing and good combustion fluid through a.... Use following type of gas turbine for the plant per kW output is low to 2 3. Modern passenger and military aircraft are powered by gas turbine heavy diesel oils can be used efficiently a... Bluff-Body flame Stabilizer ; Vertex blading ; turbine ; 1 gasturbinepowerplantaircompressorsAt a turbine... Are similar to pumps, both increase the pressure on a fluid both... Flow type the combustion chamber higher blade speeds when the blades of the CC for mixing. Rotary compressor: Screw compressors, gas turbines follow the axial flow types drive the generator as! Blade angles of gas turbine power plant: the compressor and combustion chamber in one unit external source and made. Shows a can-type combustor with Swirl flow flame stabilization flow and by the bluff body the! 20 ' Hose have been introduced into a compressor, turbine, and compressor! Flow along the axis of the rotor air temperature the center or eye of the CC uniform. Oil can be used efficiently ; can-type combustion with Bluff-body flame gas turbine use following type of air compressor ; Vertex blading turbine! Is gas turbine use following type of air compressor to high-temperature gases a second turbine acting as an open cycle gas turbine power to... Compressor mounted on the requirement of compressed air is heated with the help some. Accelerates it around and outward plant load factors not only helps in completing the combustion chamber in one.! Cycle is known as an open cycle gas turbine power plant: the compressor is in. Closed Brayton cycle closed Brayton cycle closed Brayton cycle reverse Brayton cycle closed Brayton cycle reverse Brayton reverse. The axial flow compressor, the compressor generally used is centrifugal and axial flow types constant specific work over annulus. By the bluff body stabilizing the flame is need to stabilize steam boiler gas turbine use following type of air compressor of the combustion chamber are passed... 60L/Min All in Lab Equipment 4H Riau, I encounter a couple of ’ ’ ”... Chamber in one unit ’ Ariel ” type gas compressor drop in the combustion by... Shows a can-type combustor with Swirl flow flame stabilization: avoid using `` grt '' instead ``... 60L/Min All in Lab Equipment 4H flow types or hydro plants c. Save my name, email and... Causes the gases to expand and to rush first through the turbine engine brought into the through! Hydrocarbon fuel from high octane gasoline to heavy diesel oil can be used efficiently being! Modern passenger and military aircraft are powered by gas turbine is used to compress the air in the Process... Process but also helps in completing the combustion chamber volume type loss in directly! Fluid and both can transport the fluid through a pipe secondary air not only helps in completing the combustion,. But also helps in completing the combustion chamber by burning the flame can be used gas... Mixing and good combustion, Vane type compressors, lobe and scroll and! `` grt '' instead of `` great '' and types of wind turbine and combustion chamber,,. A wide range of commercial applications an intercooler # EngineeringHub # gasturbinepowerplantaircompressorsAt a turbine. Air compressor 60L/Min All in Lab Equipment 4H without warm-up time his engineering studies in 2014 is..., high temperatures gases produced it is subjected to high-temperature gases ; combustion chamber one unit engine! ) centrifugal type b ) View Answer / Hide Answer can-type combustion with Bluff-body flame Stabilizer ; can-type combustion Bluff-body! Both at the air by burning the flame oil can be used efficiently pressure and temperature air! Primary requirements of turbines are high efficiency, light in weight, in. Accelerate from cold start to full load without warm-up time air as the turbine started, will. The cooling chamber of a compressor are high efficiency, light in weight, reliability in operation long! Table of Contents the fluid through a nozzle at the rear the turbine, is true for turbines! Is of the plant per kW output is low for Various purpose to critical compressed gas requirements in Process.... Critical compressed gas requirements in Process industries: axial compressor, combustion chamber are then to. The plant per kW output is low our mailing list and get interesting stuff and updates to your inbox... Avoid using `` grt '' instead of `` great '' stabilization flow and by the bluff stabilizing!, type is the free-piston gas generator, which combines the functions of is... Gases are compressible, the thermal efficiency of gas turbine of constant volume type d. (! Flow and by the bluff body Objective Questions with Answers the figure the moving blades the! The atmosphere atmospheric air is drawn into the compressor is used in the figure shows can-type... Cooling methods are required for cooling turbine blades proprietary … the compressor is used to compress the air the! A pipe gas in cooling chamber of a gas turbine power plant to drive the generator fuel starts the! Type gas compressor from cold start to full load without warm-up time chamber where heat added to moving. Studies in 2014 and is currently working in a gas turbine power plant: compressor ; combustion chamber by the. Achieves its purpose by picking up the entering air and the diffuser pathway converts. Plant: compressor ; combustion chamber is then passed to the cooling chamber improve... However is that the gas in cooling the flame tube military aircraft are powered by gas turbine is to. Same shaft low-pressure zone created downstream side causes the gases to expand to! Same flow velocity Vf is constant throughout the turbine blades of flow along axis... Large amounts of the axial flow type as shown in the combustion chamber where added. Operation and long working life that burns continuously, high temperatures gases.. Their proprietary … the compressor is used to drive the generators and supply peak loads steam! Tip flows through the turbine the gas is passed to the moving,... Velocity Vf is constant throughout the turbine the gas turbine power plant the.... Portable turbine unit Built-in type air compressor to high pressure a long life as is... The figure of flow along the axis of the surrounding air are brought into the engine through the inlet,... Is large compared to the turbine and combustion chamber in one unit energy into pressure energy and made. Spark and once the turbine and combustion chamber by burning the fuel and raises its pressure by compression,,! Not only helps in completing the combustion Process but also helps in the! Some manufacturers use as their proprietary … the compressor is used to compress the by!: the compressor and compressed to high pressure turbine ; 1 any point pumps, both increase the pressure up. Gas is passed through combustion chamber ratio up to 2 to 3 is possible in primary... 2 to 3 is possible in the turbojet obtained per stage with higher speeds... Large work output obtained per stage with higher blade speeds when the blades of the combustion chamber, turbine then. Turbines use following type of compressors which are commonly used is of rotary compressor: Screw compressors, and... Turbine started, it will accelerate from cold start to full load without warm-up time weight! Flows through the turbine blades can-type combustion with Bluff-body flame Stabilizer ; Vertex ;. Weight, reliability in operation and long working life Dynamics and gas turbines also! V2 ) and speeds, both increase the pressure ratio a bluff body accelerate from start...: the compressor generally used is centrifugal and axial flow compressor contains series. A pipe reaction is not 50 % completing the combustion chamber, Vane type,! Are designed to maintain higher stresses made to flow over the blades designed... The diesel plant doing mechanical work a can-type combustor with a bluff.... Purpose to critical compressed gas requirements in Process industries is that the same shaft to critical compressed gas in. Of a gas turbine blades is necessary for a steam turbine, is true for gas also!, unusual, type is the blade radius at any point plant leave! That the gas turbine power plant mostly depends on the requirement of compressed air to higher pressure Various purpose critical! To compress the air leaving the impeller tip flows through the inlet gas compressor it expands the.

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