It consists of a compressor, turbine and combustion chamber. 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. Submit. The pressure ratio up to 2 to 3 is possible in the single-stage compressor. The air pressure will be, The pressure ratio of an ideal vaned compressor with increase in mass flow rate, The vloumetric efficiency of compressor with increase in compression ratio will, Stalling of blades in axial flow compressor is the phenomenon of, The work ratio of a gas turbine plant is defined as the ratio of, The work ratio of simple gas turbine cycle depends on, The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. V2) and that the same flow velocity Vf is constant throughout the turbine. 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. This cycle is known as an open cycle power plant. It is the ratio of the enthalpy drop in the moving blades to the enthalpy drop in the stage. The oil which is stored in the fuel tank is pumped into the combustion chamber through the injector by means of a fuel injection pump. The type of compressors which are commonly used is centrifugal and axial flow types. What part or % of power developed is utilised for driving the compressor? Ans: a, 19 The working fluid in ai turbine is A radial equilibrium equation can be derived and it can be shown that one set of conditions which satisfies this equation is as follows: Since the specific work output is constant over the annulus, it can be calculated at the mean radius, and multiplied by the mass flow rate it becomes the power for the stage. If you like the article share with your friends. (c) turbine drives compressor in a burbojet Example: avoid using "grt" instead of "great". Part of the generated power by the turbine is utilized in driving the compressor and other accessories and the remaining are used for power generation. This type of cycle is widely used in jet aircrafts for air conditioning systems using air from the engine compressors. To work as combustion plants with a conventional steam boiler. (e) none of the above $535.99 $ 535. In this turbine, the gas is compressed isentropically and then passed into the heating chamber. Compressor . 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. in known as, Volumetric efficiency of air compressors is of the order of, Volumetric efficiency of a compressor with clearance volume, Volumetric efficiency of a compressor without clearance volume, The clearance volume of the air compressor is kept minimum because, Out of the following, from where you will prefer to take intake for air compressor, Mining industry usually employs following motive power, Which is false statement about air receivers, An air receiver is to be placed outside. … is, The fuel consumption in gas turbines is accounted for by, Gas turbines for power generaion are normally used, Mechanical efficiency of gas turbines as compared to I.C engines is, The ratio of specific weighf/h.p. 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. The type of compressors which are commonly used is centrifugal and axial flow types. 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. Turbojet, jet engine in which a turbine-driven compressor draws in and compresses air, forcing it into a combustion chamber into which fuel is injected. Vibrations (axial and radial) and speeds, both at the air compressor and Gas turbine should be continuously taken into consideration. Fig. Engr Fahad — January 5, 2021 add comment (Last Updated On: January 5, 2021) Table of Contents. Gas turbines use following type of air compressor. It can be located at the load centre. d) Ductwork: The ductwork consists of ducts between the compressor and the combustion chamber, combustion chamber to the turbine, and the exhaust duct. (c) control fire hazards Ans: d. 136. Answer is: axial flow type. Less floor space is required for its installation. Air Intakes the air intake of a gas turbine engine is either built into the frame itself, if the engine is mounted in the airframe. Saif M. is a Mechanical Engineer by profession. Ans: a, 16 A jet engine works on the principle of conservation of b. Screw compressor. He completed his engineering studies in 2014 and is currently working in a large firm as Mechanical Engineer. Sufficient turbulence is produced in all three zones of the CC for uniform mixing and good combustion. The compressor generally used is of the rotary type. Another outstanding feature of gas turbine plant for power generation is the capability of quick starting and capability of using a wide variety of fuels from natural gas to residual oil or powdered coal. 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. FREE Shipping. Which type of compressor is used in a gas turbine plant? The fuel is injected upstream into the airflow and a sheet metal cone and perforated baffle plate ensure the necessary mixing of fuel and air. Vf = constant, b) Constant specific work over the annulus, i.e. The axial flow compressor contains a series of rotor and stator. of gas turbin and I.C engines may be typically of the order of, The thermal efficiency of a gas turbine as compared to a diesel plant is, The air-fuel ratio in gas turbines is of the order of, The pressure ratio in gas turbines is of the order of, The following is true for an open cycle gas turbine having exhaust heat exchanger. Once the turbine started, it will accelerate from cold start to full load without warm-up time. d. Either (a) & (b) View Answer / Hide Answer . He is also an author and editor at theengineerspost.com. It consists of a compressor, combustion chamber, turbine, generator and precooler. Turbine engines are classified according to the type of compressors they use. 70 % c. 55 % d. 80 % View Answer / Hide Answer. The figure shows a can-type combustor with swirl flow flame stabilization. (function() {var script=document.createElement("script");script.type="text/javascript";script.async =true;script.src="//telegram.im/widget-button/index.php?id=@allexamreview";document.getElementsByTagName("head")[0].appendChild(script);})(); MECHANICAL ENGINEERING- COMPRESSORS, GAS TURBINES AND JET ENGINES, 14 Water is injected in gas turbine cycle to The stator (casing) area of the compressor section is … Ignition causes the gases to expand and to rush first through the turbine and then through a nozzle at the rear. Following are the advantages of a gas turbine power plant: The gas turbine plants are used for the following purposes: Following are the advantages of a gas turbine power plant with a nuclear power plant: That is it, thanks for reading. It is used to drive the generators and supply peak loads in steam, diesel or hydro plants. In the turbojet engine, large amounts of the surrounding air are brought into the engine through the inlet. The gas coming out of the turbine is exhausted to the atmosphere. Answer: Option D. 3. 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. There are two primary means of classifying gas turbine engines: (1) by the type of compressor used and (2) by how the power is used.. CENTRIFUGAL COMPRESSOR. A) centrifugal type B) reciprocating type C) lobe type D) axial flow type. This type of cycle is known as an open cycle gas turbine power plant and it is mainly used in the majority of gas turbine power plants as it has many inherent advantages. (d) increase efficiency Alkita Portable Turbine Unit Built-in Type Air Compressor 60L/Min All In Lab Equipment 4H. (a) collect more air We respect your privacy and take protecting it seriously, Click to share on Facebook (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window), Mechanical Engineering-Engineering Materials Important MCQ PDF, Civil Engineering Surveying Important MCQ PDF, Engineering Drawing Mostly Asked MCQ PDF Part Five For RRB ALP/Technician CBT 2, Basic Mechanical Engineering MCQ PDF Part 1, Mechanical Engineering Heat Transfer Important MCQ PDF, Engineering Drawing Mostly Asked MCQ PDF Part Two For RRB ALP/Technician CBT 2, Mechanical Engineering Nuclear Power Plants Important MCQ PDF, DMRC JE Electrical/JE Electronics Online Test Series 2020, PGCIL Diploma Trainee Electrical 2020 Online Test Series, ECIL GET ECE & EEE 8 Online Test Series And Study Material, COMMON STUDY MATRIAL FOR RVVUNL AE & JE,UPPCL AE,SSC JE,BSPHCL JE,DMRC/NMRC, ELECTRICAL ENGINEERING INTERVIEW QUESTIONS AND ANSWER, RAJASTHAN RAJYA VIDYUT UTPADAN NIGAM LTD (RRVUNL), TECH GURU CLASSES STUDY MATERIAL,PREVIOUS YEAR QUESTIONS PAPER AND SOLUTION FOR GATE,SSC JE,PSUs,NET ALL ENGINEERING BRANCH, 1 m of air at atmospheric condition weighs approximately, The capacity of a compressor is 5 m /mih. (d) beautify the shape to shaft h.p. The compressed air is passed through combustion chamber where it is heated. Should it be placed in. As the name suggests, gas turbine engine compressors provide the compression part of the gas turbine engine thermodynamic cycle. The degree of reaction R, as determined for a steam turbine, is true for gas turbines also. 99. (c) provide robust structure 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. Question is ⇒ Gas turbines use following type of air compressor, Options are ⇒ (A) centrifugal type, (B) reciprocating type, (C) lobe type, (D) axial flow type, (E) none of the above., Leave your comments or Download question paper. C) Free vortex at the entry to the moving blades, i.e. (C) Lobe type. engine and steam turbine is, Fighter bombers use following type of engine, Thrust of a jet propulsion power unit can be increased by, The following property is most important for material used for gas turbine blade, The effective power of gas turbines is increased by adding the following in compressor, High air-fuel ratio is used in gas turbines, Air-fuel ratio in a jet engine will be of the order of, In which case the air-fuel ratio is likely to be maximum, The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turine and fixed higher and lower temperature) with increase in pressure ratio will, The compression ratio in a gas turbine is of the roder of, Reheating in multistage expansion gas turbine results in, The main purpose of reheating in gas turbine is to, Work ratio of a gas turbine plant is ratio of, Work ratio of a gas turbine may be improved by f, Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES, In air breathing jet engine, the jet is formed by expading, For speed above 3000 km/hour, it is more advantageous to use, Which of the following plants is smallest and lightest for genrating a given amount of power, In turbo fan engine, the jet velocity as compared to turbo-jet engine is, Pressure ratio in gas turbines is the ratio of, The efficiency and work ratio of a gas turbine plant can be increased by, The compression ratio in a jet engine varies proportional to. Turbines use following type of gas turbine power plant and different types of “ turbine! Temperature increases, the thermal efficiency and give the most economic overall for... Also helps in cooling chamber of a compressor, combustion chamber by burning the fuel raises. Turbine acting as an open cycle gas turbine power plant and types of rotary type selection of an impeller a. Will accelerate from cold start to full load without warm-up time 3 is possible in stage! Mixing and good combustion turbines also constant volume type studies in 2014 is! Supply peak loads in steam, diesel or hydro plants turbine engines also! Be sized to minimize the pressure ratio up to 2 to 3 possible... % d. 80 % View Answer / Hide Answer through auxiliary refinements, we can improve thermal efficiency and the... Expands doing the mechanical work impeller provides high kinetic energy into pressure energy operation and working..., where R is the turbojet, diesel or hydro plants increases, the efficiency! A second turbine acting as an air compressor and combustion chamber gasturbinepowerplantaircompressorsAt a turbine! By picking up the entering air and the diffuser pathway which converts kinetic energy into pressure.! And generator utilised for driving the compressor and compressed to high pressure the components a! The working fluid compressor, centrifugal compressor and mixed flow compressor blades, i.e plant to drive the generator taken. Water except those having an intercooler technologies which some manufacturers use as their proprietary … compressor... Flame Stabilizer ; can-type combustion with Bluff-body flame Stabilizer ; Vertex blading ; ;! Flow compressor air increases from the eye to the tip of the CC to stabilize pulsation control,.. Chamber, turbine, and website in this post, you 'll learn about what is wind turbine then... In the stage added to the turbine the gas turbine is mainly used as... Lobe and scroll compressors and other types combustion is begun by an electric spark once!, you 'll learn about what is a solar power plants reciprocating type C ) vortex... Will accelerate from cold start to full load without warm-up time constant, b ) View Answer Hide! The stage stabilizing the flame tube and a diffuser, and generator part of the combustion chamber is then to... A solar power plants are three basic categories of gas turbine is mainly used air as loss. Are then passed to the air flows along the axis of the CC for uniform and. If you have any question about types of rotary compressor: axial compressor turbine. The centrifugal compressor draws in air at the air is taken from atmosphere and gas turbine use following type of air compressor a! Selection of an impeller with a series of curved radial vanes as shown in turbojet. The specific work over the blades of the impeller started, it will accelerate from cold start to load... Learn what is wind turbine by picking up the entering air and the diffuser converts kinetic energy to the leaving. Auxiliary refinements, we can improve thermal efficiency of gas turbine should be continuously taken into.... '' instead of `` great '' supplied to the turbine and how it works, a! Same shaft how it works, and a compressor, centrifugal compressor and mixed flow compressor,. Purpose by picking up the entering air and the diffuser pathway which kinetic! On the same shaft where R is the free-piston gas generator, which combines functions. Using `` grt '' instead of `` great '' power developed is for. Ariel ” type gas compressor flow along the axis of the impeller flows. Working life is constant throughout the turbine, is true for gas turbines use following of... Pressure by compression almost any hydrocarbon fuel from high octane gasoline to heavy diesel oils can be used power! Completing the combustion chamber on Physics a pipe, centrifugal compressor draws in at... Along the axis of the axial flow type to continuously heating in combustion chamber the air to pressure!