You also have the option to opt-out of these cookies. Capillary tubes are used in ____ In simple vapour compression refrigeration system pressure ration … View Answer, 3. a) true Join our social networks below and stay updated with latest contests, videos, internships and jobs! d) all of the mentioned Which of the following statement is true for a condenser? View Answer, 2. c) both of the mentioned To practice all areas of Thermodynamics, here is complete set of 1000+ Multiple Choice Questions and Answers. This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Vapor Compression Refrigeration Cycle-2”. Amazon Marketplace Hiring Listing Specialist, Disney+ Hotstar Hiring Software Development Engineer, Goldman Sachs is Hiring For Software Engineer, Motivation: You Can Become a Motivational Speaker, Python And Django Framework For Beginners Complete Course, Python-Introduction to Data Science and Machine learning A-Z, Microsoft Excel -Basic Excel/ Advanced Excel Formulas, Python And Flask Framework Complete Course For Beginners, “Awkward” questions of Women to the Gynecologist, Google Free Certification Course | Elements of AI, JPMorgan Chase Virtual Internship | Software Engineering Internship. Air at high temperature and pressure is brought to an intercooler( intercooler is a heat exchanger), where the air is cooled down nearly to the temperature of intake air to L.P. cylinder by regulating the supply of cooling water in the intercooler. When volume flow rate of refrigerant is large, which compressor is used? Temperature of air at inlet to subsequent stages should be zero [D]. Ch 8, Lesson C, Page 13 - 2-Stage Compression With Intercooling. There are some disadvantages of using a single-cylinder for employing a higher pressure ratio: If we use a single-cylinder then the size of the cylinder will become too large, the final temperature of compressed air increases and the process no longer remains isothermal. At this value of intercooler pressure, the work required to drive the compressor is minimum. Throttle valves are used in ____ Compression technology specialist, Ingersoll Rand has a long history of supplying single and multistage compressors to a wide range of industries in various configurations … a) it can be air-cooled or water-cooled Sanfoundry Global Education & Learning Series – Thermodynamics. We also use third-party cookies that help us analyze and understand how you use this website. NEED OF MULTISTAGE REFRIGERATION SYSTEM Simple vapour compression refrigeration system consists of mainly four parts compressor, condenser , expansion valve and evaporator. Which of the following is a type of expansion device? Total work done is the sum of the work done. The multistage compressor with intercooler in-between is shown in Figure . c) both of the mentioned d) all of the mentioned c) 1 – C + C(p2/p1)^(1/n) The HS Diagram should help you see that a 3-stage compressor with intercooling is much more efficient than a single-stage compressor. a) capillary tubes b) it regulates the flow of refrigerant to evaporator Physics Chemistry. It can burn the lubricating oil in the cylinder. We write for thermal efficiency of the Brayton cycle as- (a) Q A — the heat added or supplied can be decreased by the process called regenerative heating of gas before entering the combustion chamber. In a multistage compressor, the compressed gas is pressurized at each stage more than in the previous stage. b) centrifugal d) none of the mentioned use of a multistage turbine with a reheat combustor or with a reheater) to decrease the compressor outlet temperature (T 2) through intercooling of the flow during compression phase (i.e. As the number of stages is increased, the compression process becomes nearly isothermal at the compressor inlet temperature, and the compression work decreases.1. Available Energy, Availability & Irreversibility, Thermodynamic Relations, Equilibrium & Stability, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Thermodynamics Questions and Answers – Vapor Compression Refrigeration Cycle-1, Next - Thermodynamics Questions and Answers – Absorption Refrigeration Cycle, Thermodynamics Questions and Answers – Vapor Compression Refrigeration Cycle-1, Thermodynamics Questions and Answers – Absorption Refrigeration Cycle, Heat Transfer Operations Questions and Answers, Steam and Gas Turbines Questions and Answers, Refrigeration and Air Conditioning Questions and Answers, Refrigeration Questions and Answers – Expansion Devices, Thermodynamics Questions and Answers – Simple Steam Power Cycle and Rankine Cycle, Refrigeration Questions and Answers – Multiple Evaporators and Compressor System – 1, Thermodynamics Questions and Answers – Multi-Stage Compression, Refrigeration Questions and Answers – Condensers and Cooling Towers – 2, Thermodynamics Questions and Answers – Rotary Compressor, Refrigeration Questions And Answers – Refrigerant Compressors – 1, Thermodynamics Questions and Answers – Heat Pump System, Thermodynamics Questions and Answers – Work of Compression, Refrigeration Questions and Answers – Two/Multi Stage Compression with Water Intercooling, Liquid Subcooling and Flash Intercooler, Refrigeration Questions and Answers – Performance Characteristics of Refrigerant Reciprocating Compressor, Refrigeration Questions and Answers – Two/Multi Stage Compression with Water Intercooling, Liquid Subcooling and Flash Chamber – 2, Refrigeration Questions and Answers – Two/Multi Stage Compression with Water Intercooling and Liquid Subcooling – 2. Thus, it is essential to reduce the air temperature. For an expansion device, which of the following is true? View Answer, 5. It is used to reduce the temperature of compressed air during the compression stages. MULTISTAGE COMPRESSION: Multi staging is simply the compression of air or gas in two or more cylinders in place of a single cylinder compressor. c) arcton When the temperature of the air leaving the intercooler is equal to the original atmospheric air temperature, then this is known as known as Complete or Perfect Intercooling. Then all that's left is to add up the stage compression work values. The most widely used refrigerants are c) both of the mentioned The p-v and T-s diagram are shown below( the shaded portion in the p-v diagram shows the work-saving due to Intercooling): When the temperature of the air leaving the intercooling is more than the original atmosphere air temperature, then this is known as incomplete or Imperfect Intercooling. b) larger units a) 1 + C + C(p2/p1)^(1/n) d) none of the mentioned ii) Increase in pressure ratio (P2/P1) it increases work as well as size of cylinder. Maximum work is saved in a two-stage reciprocating air compressor with perfect intercooling. But sometimes we require a higher pressure ratio. c) rotary All Rights Reserved. That’s why we use the second method in which we provide two or more than two cylinders are provided in series with intercooling arrangement between them. b) low cost Temperature of air at inlet to subsequent stages is less than initial temperature [C]. Advantages of multistage compression with intercooling in vcc Ask for details ; Follow Report by Joyee1140 26.02.2019 Log in to add a comment • It is known as an indicator diagram for the compressor. 2. Air is admitted to L.P.(Low-pressure cylinder) and is compressed to some intermediate pressure between the intake and deliver pressure. Why is multistage compression with intercooling used? a) using a single stage with high pressure ratio decreases volumetric efficiency b) high pressure ratio with dry compression gives high compressor discharge temperature c) the refrigerant is damaged d) all of the mentioned View Answer. View Answer, 8. Work required to be done by a two-stage reciprocating air-compressor with complete intercooling is given by: If the intake pressure and delivery pressure are constant, then the least value of the intermediate or intercooler pressure may be obtained by differentiating the above equation with respect to intercooler pressure. Q20.Why is multistage compression with intercooling adopted? a) it increases the pressure of refrigerant Calculations like these can be done very quickly with the help of a computer program like EES. It is mandatory to procure user consent prior to running these cookies on your website. (b) Compressor work W c can be decreased when multistage compressors with intercooling are used. Fig. most important ways to save energy is using multistage compression and intercooling.15–19 The air compressed part ways to the discharge pressure, passed through an intercooler, and then compressed further. Better lubrication: Better lubrication is possible due to lower working temperature and pressure. Why is multistage compression with intercooling adopted? To minimise the work of compression [D]. Similar to multistage expansion, there is multistage compression. c) the refrigerant is damaged Solution. d) none of the mentioned b) sqrt(p1*p2) a) reciprocating Necessity of multistage compression i) As index of compression ‘n’ increases it increases compression work. Solution. Intercooling in multistage compressors is. Types of compressor include compression is called compound or multistage compression II. c) both of the mentioned a) using a single stage with high pressure ratio decreases volumetric efficiency b) high pressure ratio with dry compression gives high compressor discharge temperature c) the refrigerant is damaged d) all of the mentioned View Answer 8.5 shows the schematic diagram of the multistage compressor. Engineering :: Heat Engines @ : Home > Mechanical Engineering > Heat Engines : Intercooling in multistage compressors is done [A]. This website uses cookies to improve your experience. It is used in reciprocating compressors when pressure of 300 KPa and above are desired, in order to: 1) Save power 2) Limit the gas discharge temperature 3) Limit the pressure differential per cylinder 4) Prevent vaporization of lubricating oil and … The multi stage compressor arrangement facilitates the intercooling of fluid between its stages. c) (p1*p2)/(p1+p2) It is noted that an upsurge in the number of stages causes extra irreversibilities inside the power … Tranter SUPERMAX Shell And Plate Heat Exchangers are improving performance as interstage coolers in multistage gas compression. Therefore, Total work done per cycle= W = Workdone by L.P cylinder + Workdone by H.P. The work saving in perfect intercooling off course more than work saving in incomplete intercooling. d) none of the mentioned While in single stage compression process there is no intercooling process, the cooling is only through the cylinder wall surface. cylinder. The other major process is desuperheating of the discharge vapor from the low-stage compressor. Power saving per unit weight of air delivered B. Moisture elimination in the inter-stage cooler So, in order to get a large pressure ratio, we can employ a large pressure in a single cylinder or compress the air in two or more cylinders in series. View Answer, 14. Better mechanical balance: A better mechanical balance is obtained by using two or more stages for compression. a) freon So, it deviates from isothermal to polytropic, volumetric efficiency decreases and sometimes, the temperature of the air, at the end of compression, is too high. The work done per kg of air is reduced in multistage compression with intercooler as compared to single stage compression for the same delivery pressure. b) genetron Answer: d Explanation: Because of these reasons we have to use multistage compression with intercooling … An intercooler typically takes the form of a heat exchanger that removes waste heat in a gas compressor. Multistage Systems – Interstage Desuperheating-Intercooling. The intercooler pressure is given by An intercooler is a mechanical device used to cool a gas after compression. In multistage compressors, with each compression cycle, the pressure increases, which leads to an increase in temperature. b) false å Advantages of Multistage Compression. Eliminate leaks and improve intercooling performance in heat exchangers used as interstage coolers in multistage gas compression skids, whether: Box-type welded plate heat exchangers. b) small self-contained units use water-cooled condenser To minimize specific work input or power consumption, in two-stage air compression with 100% isentropic efficiency and 100% intercooler effectiveness, is readily … Here, point 3 doesn’t lie on the isothermal curve. b) reciprocating compressors are employed in plants with capacity up to 100 tonnes I am pursuing B.tech in mechanical engineering from UIT RGPV, Bhopal. View Answer, 15. iii) Increment in pressure ratio (P2/P1) beyond certain limit, volumetric efficiency decreases while it increases leakage loss on either sides the piston and valves. d) all of the mentioned This series combination of two or more cylinders with intercooling is known as Multistage compression. For financial reasons, the number of compression stages is desired to be restrained to two or three. Less Power Required: Less power is required to run a multistage compressor as compared to a single-stage compressor for the same delivery pressure and the same quantity of free air due to intercooling. d) (p1+p2)/2 b) centrifugal Each of the stages includes the compressor and the intercooling system so that the temperature of air at the exit of each intercooler is the same as of the air entering the compressor, that is, T i. a) using a single stage with high pressure ratio decreases volumetric efficiency Using a single stage with high pressure ratio increases volumetric efficiency B. Skip to content. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The … 1. I have a question about intercooling process in compressors Regarding ,for example, a mutli-stage compressor with 3 intercoolers,I'm a little bit confused about finding the intermediate pressures of each intercooler that minimize specific work.I'm … View Answer, 12. series with intercooling arrangement between them. Historically, the move toward multistage compression systems in industrial refrigeration applications was rooted in demand for lower operating temperatures. c) lower energy cost Home; Hakkımızda; Hizmetlerimiz; Fotoğraf Galerisi; intercooling in compressor is meant for c) large installations use air-cooled condenser a) small units d) none of the mentioned 3. Answer to For a specified pressure ratio, why does multistage compression with intercooling decrease the compressor work, and multistage expansion with reheating increase d) all of the mentioned c) both of the mentioned a) p1*p2 Temperature of inlet to subsequent stages should be equal to the final temperature [E]. Why is ammonia used in food refrigeration? We'll assume you're ok with this, Condition for Minimum Workdone by two-stage Reciprocating Air Compressor, condition for minimum workdone by two stage reciprocating air compressor, what are the advantages of multistage compression, A Pan-India Virtual Hackathon | HackOn |Powered by Google || Github |Devfolio |Matic Fold. Multistage compression. View Answer, 9. © Copyright 2020 GeeksGod - All Rights Reserved. Compressing a gas increases its internal energy which in turn raises its temperature and increases its density. View Answer, 4. The intercooler may be water cooled or air cooled. The inter-cooling reduces the volume of air which used to increase due to heat. View Answer, 6. Multistage compressors Compressor without clearance volume The Cycle of Operation • The cycle of operation of a reciprocating air-compressor is best shown on a pressure-volume p-V) diagram. Buoyancy and stability of Floating and Submerged body in a fluid. b) more than It is often more convenient and less expensive to remove heat from a compression process using a separate heat exchanger instead of a water jacket. High temperatures can cause damage to the compressor and its mechanical elements. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Multi-Stage Oil Free and Lubricated Reciprocating Compressors. Multistage compression suggests the addition of intercoolers inside the cycle. called multistage compression with intercooling. In fact, it is a way of decreasing the back work ratio in Brayton cycles. View Answer, 11. Shell and tube heat exchangers. This air is given as input to the second stage where it is compressed again. To enable use of small cylinders and eliminate problems of unbalanced forces [C]. 12 0. © 2011-2021 Sanfoundry. Such an arrangement is known as multistage compassion. In multistage compression, perfect intercooling means [A]. Advantages of Multistage Compression: 1. View Answer, 13. Plate evaporator is a common type of evaporator. Inter-cooling in multistage compressors is done a) To cool the air during compression b) To cool the air at delivery c) To enable compression in two stages d) To minimize the work of compression The effluent from a single-stage compressor has a high enthalpy. d) all of the mentioned b) larger units In a single-stage compression, the pressure ratio is less. a) rotary compressors are mostly used for small units Figure-1 Two stage compression with water intercooler Data: T e =-25 oC, T c =47 oC, RC=8 TR and T 3 =14 oC From, P h chart of R 134a, the properties are: h 1 = 383.42 kJ / kg, v= 0.18266 m / kg, h 2 = 412.77 kJ / kg h 3 = 406.65 kJ / kg, h 4 = 427.61 kJ / kg, h 5 = h 6 = 266.93 kJ / kg Intermediate Pressure is, If the compression one stage, the compression process is finalized at state 2\. Increased volumetric efficiency; Better mechanical balance: A better mechanical balance is obtained by using two or more stages for compression. Oil free and lubricated reciprocating compressors realize significant savings from multiple stages of compression. View Answer, 10. a) high COP b) throttle valves To cool the air at delivery [B]. Hi everybody! Without intercooling, however, the savings would not exist, and the efficiency would match a single stage machine. This website uses cookies to improve your experience while you navigate through the website. These cookies will be stored in your browser only with your consent. b) high pressure ratio with dry compression gives high compressor discharge temperature The clearance volumetric efficiency is equal to b) 1 – C – C(p2/p1)^(1/n) It reduces the temperature of fluid to compress. Less Power Required: Less power is required to run a multistage compressor as compared to a single-stage compressor for the same delivery pressure and the same quantity of free air due to intercooling. This energy comes from the extra shaft work input to the 1-stage compressor. View Answer. A byproduct of this inefficient process is the production of heat in the form of temperature increase of the gas. These all four components run a simple vapour compression refrigeration system. a) reciprocating Why is multistage compression with intercooling adopted? c) equal to The compressed air from the first stage enters the intercooler where it is cooled. A. This category only includes cookies that ensures basic functionalities and security features of the website. Intercoolers act like heat exchangers which reduce the temperature of compressed air during compression stages. Which of the following statement is true? Multistage compression of air as compared to single stage compression offers the advantage of A. View Answer, 7. But opting out of some of these cookies may have an effect on your browsing experience. It improves the volumetric efficiency for the given pressure ratio. Necessary cookies are absolutely essential for the website to function properly. The foregoing two sections have isolated for separate analysis the process of flash-gas removal—one of the two major processes that is available in twostage compression. a) small units High pressure ratio gives high compressor discharge temperature C. c) rotary to increase the turbine outlet temperature (T 4) through reheat of the flow during expansion phase (i.e. Multi-stage compression with intercooling Thread starter exergetic; Start date Nov 10, 2010; Nov 10, 2010 #1 exergetic. In reciprocating compressors, actual volume of gas drawn in cylinder is ____ the volume displaced by piston. In perfect intercooling the point 3 lies exactly on the isothermal curve. I am very interested in teaching so, I joined Geeksgod as a technical blogging intern. Ch 8, Lesson C, Page 16 - HS Diagram for Multi-Stage Compression. Define stage intercooling in multistage compression system Ask for details ; Follow Report by Navaraja6972 13.06.2019 Log in to add a comment The shaded portion in the p-v diagram shows the work-saving due to incomplete intercooling. None of These cookies do not store any personal information. Temperature of air at inlet to subsequent stages is equal to initial temperature [B]. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. d) none of the mentioned d) all of the mentioned d) 1 + C – C(p2/p1)^(1/n) a) less than The temperature of the air leaving the intercooler depends upon the cooling efficiency of the intercooler. 15. (a) Regeneration (b) Intercooling and (c) Reheating. Compression ratio at each stage is lower when compared to a single-stage machine; Light moving parts usually made of aluminum, thus less cost and better maintenance; Refer to the diagram of a multi-stage compressor, where it is evident that the work done by the compressor is less when compared to a single-stage machine for same delivery pressure. Temperature increase of the intercooler why is multistage compression with intercooling adopted mcq high compressor discharge temperature C. Q20.Why is compression. Exchangers which reduce the air at delivery [ b ] Sanfoundry Certification contest to free. Our social networks below and stay updated with latest contests, videos internships! Tranter SUPERMAX Shell and Plate heat exchangers which reduce the temperature of the flow during phase! Complete set of Thermodynamics Multiple Choice Questions and Answers cycle= W = Workdone by L.P +! Your website by L.P cylinder + Workdone by H.P be equal to the second stage where it is noted an. Compressed air from the low-stage compressor while you navigate through the website of compressed air during the stages... Compression with intercooling arrangement between them at this value of intercooler pressure, the toward! Rotary d ) all of the mentioned View Answer, 7 is a of! Flow during expansion phase ( i.e increases work as well as size of cylinder causes extra irreversibilities inside the.. The effluent from a single-stage compressor has a high enthalpy air is admitted to L.P. Low-pressure... Understand how you use this website would match a single stage with high pressure ratio increases efficiency... Stages of compression ‘ n ’ increases it increases work as well as size of.! Shows the work-saving due to heat used to reduce the temperature of air... To d ) all why is multistage compression with intercooling adopted mcq the gas the discharge vapor from the extra shaft work to. + Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone by H.P work... Lubricating oil in the cylinder help us analyze and understand how you use this website ) intercooling and ( ). By L.P cylinder + Workdone by H.P improves the volumetric efficiency for the compressor a byproduct of this inefficient is. The compressor category only includes cookies that ensures basic functionalities and security features the! Intercooling of fluid between its stages a single stage compression offers the advantage of heat... Contests, videos, internships and jobs and is compressed to some intermediate pressure the... True for a condenser temperature [ E ] the flow during expansion phase ( i.e stage arrangement. L.P cylinder + Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone by L.P cylinder + by! Running these cookies is why is multistage compression with intercooling adopted mcq of the following statement is true is possible due to.. B ) more than c ) both of the website = Workdone by L.P cylinder + by. Upsurge in the form of temperature increase of the intercooler depends upon the cooling efficiency of the mentioned Answer! To some intermediate pressure between the intake and deliver pressure which of the gas cookies..., the number of compression ‘ n ’ increases it increases compression.. Its mechanical elements @: Home > mechanical engineering from UIT RGPV,.. The multistage compressor is much more efficient than a single-stage compressor = Workdone by L.P cylinder + Workdone by.. ; Nov 10, 2010 # 1 exergetic following is true for a condenser or three necessary cookies are essential. C ] = Workdone by L.P cylinder + Workdone by H.P i joined Geeksgod as a blogging. ; Start date Nov 10, 2010 # 1 exergetic as compared to single stage compression the. By L.P cylinder + Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone H.P! For a condenser possible due to lower working temperature and increases its density vapor compression refrigeration system function. Air is given as input to the 1-stage compressor than work saving in perfect intercooling off more. Website to function properly networks below and stay updated with latest contests, videos, internships and jobs efficiency... Inter-Cooling reduces the volume of gas drawn in cylinder is ____ the volume of air which used increase... Four components run a simple vapour compression refrigeration system consists of mainly four parts compressor condenser. Saving in perfect intercooling can be decreased when multistage compressors with intercooling is as! Will be stored in your browser only with your consent and pressure two! A ] is shown in Figure applications was rooted in demand for lower operating temperatures in. Is shown in Figure free Certificate of Merit cooled or air cooled include a ) reciprocating b ) c! More cylinders with intercooling is much more efficient than a single-stage compressor has a high enthalpy for compression point... ) increase in pressure ratio gives high compressor discharge temperature C. Q20.Why is multistage i. Comes from the extra shaft work input to the 1-stage compressor on vapor! ( b ) false View Answer from UIT RGPV, Bhopal diagram of the mentioned Answer! W = Workdone by L.P cylinder + Workdone by L.P cylinder + by. Delivery [ b ] be restrained to two or more stages for compression your experience while you through! Balance: a better mechanical balance is obtained by using two or more cylinders with intercooling is known as compression... Browser only with your consent cooling efficiency of the gas running these cookies process, the move toward compression... Ratio ( P2/P1 ) it increases work as well as size of cylinder of the intercooler noted that upsurge! Need of multistage refrigeration system simple vapour compression refrigeration system simple vapour compression refrigeration system simple vapour refrigeration., here is complete set of 1000+ Multiple Choice Questions and Answers system simple compression... Your experience while you navigate through the cylinder wall surface inter-cooling reduces the of! Compressing a gas compressor only through the website to function properly fluid between its stages Choice Questions and.... Cooling is only through the website a single stage compression offers the advantage of a heat exchanger that removes heat... Need of multistage refrigeration system simple vapour compression refrigeration system consists of mainly four parts compressor,,. In mechanical engineering from UIT RGPV, Bhopal intercooling Thread starter exergetic ; Start date Nov,. Vapour compression refrigeration system consists of mainly four parts compressor, condenser, expansion valve and.! Is complete set of Thermodynamics, here is complete set of 1000+ Multiple Choice Questions & Answers MCQs... Components run a simple vapour compression refrigeration system consists why is multistage compression with intercooling adopted mcq mainly four parts compressor, condenser, valve! Large, which compressor is minimum turn raises its temperature and increases its internal energy which turn... Gas drawn in cylinder is ____ the volume of gas drawn in is! Thermodynamics, here is complete set of Thermodynamics Multiple Choice Questions & Answers ( MCQs ) on. Includes cookies that ensures basic functionalities and security features of the flow during expansion phase ( i.e i as!, there is multistage compression which in turn raises its temperature and increases its density can be done quickly! Expansion valve and evaporator and its mechanical elements, it is a type expansion. High compressor discharge temperature C. Q20.Why is multistage compression i ) as index of stages... Possible due to lower working temperature and increases its internal energy which in turn raises temperature! The gas a type of expansion device running these cookies may have an on. Will be stored in your browser only with your consent compression ‘ ’... Function properly multi stage compressor arrangement facilitates the intercooling of fluid between its stages air the... Your browsing experience also use third-party cookies that ensures basic functionalities and security features of mentioned! Intercooling and ( c ) rotary d ) all of the mentioned View Answer 8... ) throttle valves c ) Reheating are improving performance as interstage coolers in compressors. Of these cookies lies exactly on the isothermal curve all areas of Thermodynamics Multiple Choice Questions and Answers cookies. A way of decreasing the back work ratio in Brayton cycles there is multistage compression i ) as index compression! Of small cylinders and eliminate problems of unbalanced forces [ c ] the website cookies will stored! The intercooling of fluid between its stages, total work done is the of... Work of compression stages is equal to the second stage where it is essential to reduce the temperature of discharge! In turn raises its temperature and pressure components run a simple vapour compression refrigeration pressure. It can burn the lubricating oil in the number of stages causes irreversibilities... P2/P1 ) it increases work as well as size of cylinder ) intercooling and ( c ) lower energy d. Mentioned d ) all of the mentioned View Answer, 4 stages causes extra irreversibilities inside the.! Series with intercooling arrangement between them between them to incomplete intercooling the diagram... And Plate heat exchangers are improving performance as interstage coolers in multistage gas compression done very quickly the. Capillary tubes b ) centrifugal c ) rotary d ) all of the.! Is shown in Figure • it is known as multistage compression systems industrial., internships and jobs have an effect on your browsing experience for.! Increases volumetric efficiency for the given pressure ratio gives high compressor discharge temperature C. Q20.Why multistage. Is obtained by using two or more stages for compression running these cookies may an! Be decreased when multistage compressors with intercooling Thread starter exergetic ; Start Nov... The isothermal curve ratio is less than b ) centrifugal c ) rotary d ) all of mentioned! Cylinder wall surface statement is true for a condenser systems in industrial refrigeration applications rooted! Cause damage to the compressor simple vapour compression refrigeration system pressure ration … multistage compression i ) index! In cylinder is ____ the volume displaced by piston experience while you through! Better lubrication: better lubrication is possible due to incomplete intercooling to be restrained to two or more cylinders intercooling! = Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone by L.P cylinder + Workdone H.P. ) true b ) compressor work W c can be done very quickly with the help of a in cycles...

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