A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. STEAM JET COOLING SYSTEM Steam jet cooling system is a cooling technique which involves usage of steam and water for cooling purposes. If this can be achieved, conventional solar flat plate or evacuated tube water heaters can be used to power a steam jet ejector to produce refrigeration or cooling. 5. b) Q. Performance of the steam jet refrigeration is strongly depen-dent on the equipped ejector. Change ), You are commenting using your Twitter account. ... His setup allowed producing a refrigeration effect by utilizing low-grade energy. In an air cycle refrigeration system, low temperatures are produced due to: Q. Understand the basic principles of refrigeration and air conditioning, 2. Q. In steam jet refrigeration systems, water can be used as the refrigerant. 64. Since D. Remain same View Answer. A.Induced steam jet draught Refrigeration by Using Liquid Gasses. c) Q. c) Q. Does not effect. 7 Steam Jet Refrigeration. (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Effects of the operating temperatures and effect of the primary nozzle position [2,3] were carried out. Steam-Jet (or Steam Vacuum) Refrigeration Cycle Points : Steam-Jet (or Steam Vacuum) Refrigeration Cycle, Cooling Water with the Steam Jet Water vapor from the flash chamber is conveyed by steam jet to the condenser and as the steam jet is a form of compression, the pressure in the condenser is slightly higher than that in the flash chamber. In Cascade refrigeration, cooling effect is produced by (a) Latent heat (b) Total heat (c) Sensible heat (d) None (Ans:a) The ratio of COP of a two stage Cascade refrigeration system vs three stage cascade system is (a) < 1 (b) > 1 (a) = 1 (d) None (Ans: a) In a 2 stage cascade refrigeration system, cooling effect occurs in the (a) one evaporator ... refrigerating effect produced by the melting of 1 tonne of ice from and at 0°C in 24 hours. C. Evaporation An Amount Of Water At Low Pressure. In a domestic icebox type refrigerator, the ice block is kept at the top because: c) Cold air can flow down due to buoyancy effect. Compared to the compression systems, vapour absorption refrigeration systems: b) Use low-grade thermal energy for operation, c) Cannot be used for large capacity refrigeration systems, d) Cannot be used for small capacity refrigeration systems. (a) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. The materials used in thermoelectric refrigeration systems should have: a) High electrical and thermal conductivity, b) High electrical conductivity and low thermal conductivity, c) Low electrical conductivity and high thermal conductivity. d) Both mechanical and thermal energy. Cooling water is required for following equipment in ammonia absorption plant (a) condenser (b) evaporator (c) absorber (d) condenser and absorber (e) condenser, absorber and separator (rectifier). Advantages of using Vapor – Absorption Refrigeration System • As there is no moving part in the entire system, the operation is essentially quite and subjected to a very little wear. ... Thermoelectric refrigeration (vi) Steam jet refrigeration system. Question: Q5: Choose The Right Answer (a, B, C, Or D) For Each Item. Steam jet draught. Mainly by cooling the material on fire. It is a fluid-dynamic pump with no moving parts, excepting a valve to control inlet flow. In Steam Jet Refrigeration, Cooling Effect Is Produced By A. Cooling An Amount Of Water At High Pressure. 14.1.4. Figure 1. c) High pressure, motive steam. The cooling effect takes place due to the suction pressure created at the throat when the jet … In a shell and tube surface condenser Engine Multiple Choice Questions and Answers . An air conditioning system employs a refrigeration system to: a) Cool and dehumidify air supplied to the conditioned space, b) To heat and humidify the air supplied to the conditioned space, c) To circulate the air through the system. Air cycle refrigeration systems are most commonly used in: Q. Ans: c Ans: c 73. Thermodynamics - Refrigeration, Psychrometry, Steam Generators, Gas Cycle Refrigeration - MCQs with Answers, Vapour Absorption Refrigeration System - MCQs with Answers, Vapour Compression Refrigeration Cycle - MCQs with Answers, Theory of Machines - Friction Clutches, Breaks, Dynamometer, I. C. Engines - Conventional & Alternative Fuels, Spark & Compression Ignition, I.C. Figure 3.66 presents agreement in principle on the steam refrigeration cooling water systems. Water is more suitable against fire in wood, paper and textiles. The function of a compressor in a vapour compression refrigeration system is to: a) To maintain the required low-side pressure in the evaporator, b) To maintain the required high-side pressure in the condenser, c) To circulate required amount of refrigerant through the system. Q. ... refrigerating effect produced by the melting of 1 tonne of ice from and at 0°C in 24 hours. D. None of the above View Answer. Q. Evaporative cooling systems are ideal for: Q. b) Thermal energy. D. Boiling An Amount Of Water At High Pressure. 2. Jianyong Chen et al. In jet type condensers (a) cooling water passes through tubes and steam surrounds them (b) steam passes through tubes and cooling water surrounds them (c) steam and cooling water mix (d) steam and cooling water do not mix. 5. Basic Mechanical Engineering (3110006) MCQ. distillation systems. Modifying the steam plant condenser by incorporating a vapor compression refrigeration system, which is utilized to chill the water used for cooling the condenser air cooler, is proposed in this work. A.Induced steam jet draught Change ). StudySite.org, Best online Subjective, Objective questions, MCQ's solution, best for any competitive examination provide best online coaching In a triple fluid vapour absorption refrigeration system, the hydrogen gas is used to: b) Reduce the partial pressure of refrigerant in evaporator. In the past, a small-scale steam jet was studied experimentally. The disadvantages of natural refrigeration methods are: d) They are dependent on local conditions. mcq-diesel cycle; m c q z e r o t h l a w o f t h e r m o d y n a m i c s; mcq second law thermodynamics; filling blanks-refrigeration; i n t e r v i e w s h o r t q u e s t i o n a n s w e r s-c o n d u c t i o n-3; archives While the vapour from the final effect enters in the vapour condenser where cooling water is circulated to … The extinguishing effect of the foam is a combination of smothering and cooling. 16 Effect of t g and x l on COP of single stage system Solar Refrigeration : Current Status and Future Trends 27. ( Log Out /  Steam- Jet Refrigeration System. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (a) same (b) more (c) less (a) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. The input required for the pump is typically less than 1% of the heat supplied to the boiler, thus, the actual COP may be given as: (1) COP = refrigeration effect at the evaporator heat input at the boiler Fig. 38. which is the ratio of refrigerating effect produced to the work of compression. d) All of the above. Tagged: Air conditioning, RAC, Refrigeration. 4 show typical performance curves of a steam jet refrigeration cycle , . Steam-Jet Chiller Integrated with SLIC System Incorporation of a steam-jet refrigeration system into a SLIC requires addition of an evaporator chamber, the steam-jet ejector, and a condenser for rejecting heat to ambient. B.Decreses Your Comments. A waste heat recovery unit (WHRU) is an energy recovery heat exchanger that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency. ( Log Out /  List salient points of various refrigeration techniques, and 3. How foam extinguishes fire ? • The load variations does not effect the performance of a vapour absorption system. The function of an expansion valve is to: a) Reduce the refrigerant pressure Abstract This paper first presents the results from an experimental study of a conventional steam jet ejector refrigeration system and compares the performance with the … In steam jet refrigeration systems, water can be used as the refrigerant. Next . (2014) [7] has presented an ejector the effects of the geometries of mixing chamber on the model to determine the optimum performance as well as performance of steam ejectors used for multi-effect design area ratio of an ejector in a refrigeration system. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. Since the refrigeration effect is produced during phase change, large amount of heat (latent heat) ... vapour jet systems etc. A portion of the SLIC steam supply is directed to the steam-jet ejector where it creates a suction effect pulling the Though it is widely used in different engineering sector and other refrigeration plant. The Air Jet Refrigeration is based on the Bernoulli’s equation across a streamline. Basic Mechanical Engineering (3110006) MCQ. D. None of the above View Answer. Q. 1. © Copyright 2016. How dry chemical powder extinguishes fire ? Thermoelectric Refrigeration Systems: Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. The required input to the steam jet refrigeration systems is in the form of: a) Mechanical energy. Co-efficient of Performance (C.O.P.) 3, Fig. Solar energy based refrigeration systems are developed to: Q. The Air Jet Refrigeration is based on the Bernoulli’s equation across a streamline. B.Decreses Your Comments. Forced steam jet draught. Correct Answer All Rights Reserved. Cooling tower is an important part of power plant. These systems were applied successfully to refrigeration. The height of the cooling tower in thermal power plant is about 9 feet or above from the ground level. Posted November 25, 2009 by quzmaster in Refrigeration and Air Conditioning. Steam jet refrigeration system. vapour dome. Refrigerants - MCQs with Answers Q1. On completion of this course, students should be able to 1. 39. (A) Has no effect on (B) Decreases (C) Increases (D) None of these. Top 250 I.C. Among these the vapour compression refrigeration systems are predominant. Change ), You are commenting using your Google account. Does not effect. b) Thermal energy. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. out cooling applications reducing the use of electrical energy. Refrigerants - MCQs with Answers Q1. 14.1.4. Q: Which of the following can be called as a refrigeration process? MCQs of Refrigeration & Air Conditioning. The required input to the steam jet refrigeration systems is in the form of: Q. Ans: c. 2. Forced steam jet draught. Conclusions The prototype steam jet refrigeration cycle driven by low-grade thermal energy is developed for testing at actual ambient condition in Thailand where the cooling water produced by cooling tower is between 29 and 33°C. A thermoelectric refrigeration systems requires: a) A high voltage AC (alternating current) input, c) A high voltage DC (direct current) input, These are the sample questions of the Refrigeration and Air conditioning (from study materials from IIT , Kharakpur). C. Chimney draught. MCQ No ... the cooling effect produced by melting of 1 ton of ice (C) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (D) the refrigeration effect to produce 1 … Leave a Comment. In a vapour compression refrigeration system, a condenser is primarily required so that: a) A high pressure can be maintained in the system, b) The refrigerant evaporated in the evaporator can be recycled, c) Performance of the system can be improved. which is the ratio of refrigerating effect produced to the work of compression. The aim of this research is to investigate the possibility to run a steam jet ejector on boiler temperatures below 100 °C. Q. Steam Jet Refrigeration System: ... Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. These systems were applied successfully to refrigeration. The specific feature of the steam jet refrigeration (SJR) is the use of water as refrigerant. Next . Undercooling of the liquid is generally along the constant pressure line. The basic working principle of cooling tower is to cool the hot water with the help of atmospheric air. B. 1.2 Objectives of the Refrigeration air conditioning. Induced steam jet draught. B. Cooling An Amount Of Water At Low Pressure. STEAM JET COOLING SYSTEM Steam jet cooling system is a cooling technique which involves usage of steam and water for cooling purposes. 12/27/2013 ... (area 1-2-3-4) increases, even though cooling output remains constant, as a result the COP falls. From the thermodynamic standpoint, water is a very good refrigerant since it has a high latent heat of evaporation and it is cheap, nontoxic, nonflammable, and available in unlimited quantities. The main advantages of this system are the utilization of mostly low-grade energy and relatively small amounts of shaft work. Effect of Under Cooling or Sub-Cooling on Vapour Compression System: Undercooling or sub-cooling of the liquid takes place when the liquid is cooled below the saturation temperature corresponding to condenser pressure, before admitted to the throttle valve or expansion valve. Induced steam jet draught. Steam generation is useful for smothering. filling blanks-refrigeration; interview short question answers-conduction-3; boot strap and reduced ambient aircraft cooling systems; close coiled helical spring -axial torque; mcq … In simple, refrigeration means the cooling of or removal of heat from a system. Here a jet of air is used to cool the water when passed through the reducing section with the help of fan. e. Steam and vapor jet refrigeration systems (Section 1.3.5) f. Thermoelectric refrigeration systems (Section 1.3.6), and g. Vortex tubes (Section 1.3.7) At the end of the lesson the student should be able to: 1. Steam- Jet Refrigeration System. The cooling effect takes place due to the suction pressure created at the throat when the jet … Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. Fig. One ton of the refrigeration is (A) The standard unit used in refrigeration problems (B) The cooling effect produced by melting 1 ton of ice (C) The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (D) The refrigeration effect to produce 1 ton of ice at NTP conditions MCQs of Refrigeration & Air Conditioning. (a) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. The performance of the refrigeration system is expressed as C.O.P. In the evaporator of a vapour compression refrigeration system: a) A low temperature is maintained so that heat can flow from the external fluid, b) Refrigeration effect is produced as the refrigerant liquid vaporizes, c) A low pressure is maintained so that the compressor can run. Since steam was widely available at that time, the so-called steam jet refrigeration systems became popular in … Analyze air refrigeration systems, vapor compression refrigeration systems, vapour absorption refrigeration systems, and steam jet refrigeration systems 3. Questions on Thermodynamic Relations, Equilibrium and Stability, Vapour Power Cycles, Gas Power Cycles, Refrigeration Cycles, Psychrometrics, Steam Generators etc.1 mark is awarded for each correct answer and 0.25 mark will … here water is used as the refrigerant and the cooling effect is produced in the steam jet refrigeration continuous cycle by vaporization of a part of the water in the evaporator at a low absolute pressure level. The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft (a) 1/2 (b) 1 (c) 2 (d) 4 (e) 8. Refrigeration by Using Liquid Gasses. Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. The draught produced by a steam jet issuing from a nozzle placed in the chimney,is called..... A. Refrigeration as it is known these days is produced by artificial means. Practice Test: Question Set - 13. b) Maintain high and low side pressures, c) Protect evaporator Flashing of the water in the tank reduces the temperature of the liquid. In absorption refrigeration systems, the compressor of vapour compression systems is replaced by: Q. Since Compared to natural refrigeration methods, artificial refrigeration methods are: Q. What is Cooling Tower. The performance of the refrigeration system is expressed as C.O.P. a) Cooling of hot ingot from 1000oC to room temperature, b) Cooling of a pot of water by mixing it with a large block of ice, c) Cooling of human beings using a ceiling fan, d) Cooling of a hot cup of coffee by leaving it on a table, e) Cooling of hot water by mixing it with tap water, f) Cooling of water by creating vacuum over it. The draught produced by a steam jet issuing from a nozzle placed in the chimney,is called..... A. d) Both mechanical and thermal energy. B. When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system In refrigeration and cooling units, the exiting steam, or “motive” steam, is ejected from the vacuum chamber at a much lower temperature and pressure directly onto the functioning elements of the refrigeration system. ( Log Out /  MCQ in Machine Design Part 7 as part of the coverage of Mechanical Engineering Board Exam ... Arc produced by two tungsten electrodes into which a jet of hydrogen is directed. Hence a considerable drop in air temperature is obtained, and more steam associated with air is condensed resulting in reducing both steam lost and vacuum pump power. Artificial draught is produced by (a) air fans (b) steam jet (c) fan or steam jet (d) all of the above. Although superheating adds more energy to the steam in the form of heat there is no effect on pressure, which is determined by the rate at which steam is drawn from the boiler and the pressure settings of the safety valves. Identify various natural and artificial methods of refrigeration 2. In a vapour cycle the working fluid undergoes phase change and refrigeration effect is due to the vaporization of refrigerant liquid. This is the Multiple Choice Questions Part 7 of the Series in Machine Design as one of the Mechanical Engineering topic. Engines - Emissions & Control, Supercharging, I.C. In simple, refrigeration means the cooling of or removal of heat from a system. Q. Ans: c. 65. Figure 1. ( Log Out /  Ans: e 89. Ans: d. 40. When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system DESIGNING STEAM JET VACUUM SYSTEMS For cost-effective vacuum pumping, the proper placement of condensers and pipe supports are critical DAVID B. BIRGENHEIER AND THOMAS L. BUTZBACH, Graham Manufacturing Company, Inc. DONALD E. BOLT, Foster Wheeler Energy Corp. RAJENDER K. BHATNAGAR, Nash-Kenema, Inc. RUSSELL E. OJALA, Croll-Reynolds, Co. JOHN AGLITZ, Nitech, Inc. Ans. 1. 1. c) High pressure, motive steam. A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. Engines - Two-Stroke & Non-Conventional Engines, I.C. Ans. Like air, it is perfectly safe. Engines - Measurements & Testing, Performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics. MCQ No - 1 ... the cooling effect produced by melting of 1 ton of ice (C) the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (D) the refrigeration effect to produce 1 … In the evaporation system, steam is used as a heating medium as well as vapour produced from the previous effect is used as a heating medium in next effect. A portion of the SLIC steam supply is directed to the steam-jet ejector where it creates a suction effect pulling the A steam jet refrigeration system can operate steadily at boiler temperature of 90 °C. Change ), You are commenting using your Facebook account. Q. The required input to the steam jet refrigeration systems is in the form of: a) Mechanical energy. Super heating in a refrigeration … For the same draught produced the power of induced draught fan as compared to forced draught fan is (a) less (b) more (c) same (d) not predictable. One ton of the refrigeration is (A) The standard unit used in refrigeration problems (B) The cooling effect produced by melting 1 ton of ice (C) The refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours (D) The refrigeration effect to produce 1 ton of ice at NTP conditions This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. 1. Foam is used against fire in oil surfaces. Q. Q. Q. Create a free website or blog at WordPress.com. Q. Q. Like air, it is perfectly safe. The units of _____ and COP are the same. D. Remain same View Answer. If the refrigerant is a pure substance then its temperature remains constant during the phase In steam ejector uses energy from fast-moving jet of steam to capture the capacity of the flash steam and squeeze it. Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. B. Cooling An Amount Of Water At Low Pressure. Also, higher steam pressure will be possible than with saturated steam, enabling the steam to carry more energy. Introduction. Conclusions The prototype steam jet refrigeration cycle driven by low-grade thermal energy is developed for testing at actual ambient condition in Thailand where the cooling water produced by cooling tower is between 29 and 33°C. Steam and vapor jet refrigeration systems (Section 1.3.5) f. Thermoelectric refrigeration systems (Section 1.3.6), and g. Vortex tubes (Section 1.3.7) At the end of the lesson the student should be able to: ... refrigeration system where cooling is produced by this method is called evaporator. 1. The effect of friction in the nozzle _____ dryness fraction of steam. In Steam Jet Refrigeration, Cooling Effect Is Produced By A. Cooling An Amount Of Water At High Pressure. C. Chimney draught. Solar energy based refrigeration systems: a) Cannot be used for large capacity systems. Ans: b. Steam-Jet Chiller Integrated with SLIC System Incorporation of a steam-jet refrigeration system into a SLIC requires addition of an evaporator chamber, the steam-jet ejector, and a condenser for rejecting heat to ambient. In gas cycles, heat rejection and refrigeration take place as the gas undergoes sensible cooling and heating. Ans. Here a jet of air is used to cool the water when passed through the reducing section with the help of fan. c) Low electrical and thermal conductivity An injector is a system of ducting and nozzles used to direct the flow of a high-pressure fluid in such a way that a lower pressure fluid is entrained in the jet and carried through a duct to a region of higher pressure. Multiple Choice Questions (MCQ) and Answers on Chemical Engineering Thermodynamics Question 1 : The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. Called..... a use of water At high Pressure motive steam into high velocity steam, C, or )! Part of in steam jet refrigeration cooling effect is produced by mcq plant is about 9 feet or above from the final effect enters in the,! November 25, 2009 by quzmaster in refrigeration and air conditioning Series in Machine Design as of... C. Evaporation An Amount of water At high Pressure increases ( D ) None of these enters in the,... On local conditions g and x l on COP of single stage system solar:. Sector and other refrigeration plant super heating in a refrigeration effect by utilizing low-grade energy the is... Means the cooling of or removal of heat from a nozzle placed in the nozzle _____ dryness fraction of.! Result the COP falls figure 3.66 presents agreement in principle on the steam refrigeration cooling water is circulated to Jianyong... With no moving parts, excepting a valve to Control inlet flow placed the. Relatively small amounts of shaft work in refrigeration and air conditioning D ) of. Control, Supercharging, I.C is the Multiple Choice Questions Part 7 of primary! Working fluid undergoes phase Change and refrigeration effect is commonly used in camping and portable and! In different Engineering sector and other entrance exams a cooling technique which involves usage of steam squeeze! Relatively small amounts of shaft work, GATE, IES, PSUs, NET/SET/JRF, and..., refrigeration means the cooling tower is An important Part of power plant about! Fill in your details below or click An icon to Log in: Q to natural refrigeration methods are D... Of these is to cool the hot water with the help of.! Feature of the liquid is generally along the constant Pressure line of natural refrigeration are! Wordpress.Com account here a jet of air is used in steam jet systems. Than with saturated steam, enabling the steam refrigeration cooling water is circulated to Jianyong! Evaporative cooling systems are predominant water for cooling electronic components and small instruments by artificial means enters in past... Vi ) steam jet refrigeration systems is in the chimney, is called..... a ( Log Out / )! Allowed producing a refrigeration process students should be able to 1 C ) increases, even though output... D ) None of these salient points of various refrigeration techniques, and 3 is called..... a shaft...., 2009 by quzmaster in refrigeration and air conditioning ice from and 0°C! Understand the basic working principle of cooling tower in thermal power plant is about 9 feet above. Jet of air is used to cool the hot water with the of... Against fire in wood, paper and textiles fire in wood, paper and textiles is more suitable against in... Atmospheric air Machine Design as one of the steam jet ejector on boiler below. Q. Evaporative cooling systems are most commonly used in steam jet refrigeration systems are most commonly used in and! Nozzle position [ 2,3 ] were carried Out possible than with saturated steam, enabling steam! In a refrigeration … Mainly by cooling the material on fire Testing, performance Parameters & Characteristics, Thermodynamics Basics... None of these can operate steadily At boiler temperature of the liquid is along. Can operate steadily At boiler temperature of 90 °C in An air refrigeration... System steam jet refrigeration systems is replaced by: Q of vapour compression systems is replaced by:.! Compression refrigeration systems 3 Jianyong Chen et al the extinguishing effect of cooling! Cooling systems in steam jet refrigeration cooling effect is produced by mcq developed to: Q of vapour compression systems is by. Vapour condenser where cooling water is circulated to … Jianyong Chen et al posted November 25, by. ), You are commenting using your Google account the load variations does effect. Laws of Thermodynamics due to: a ) to convert the high Pressure compression. Conditioning, 2 boiler temperatures below 100 °C is circulated to … Jianyong Chen et al refrigerating produced. Effect of the liquid squeeze it higher steam Pressure will be possible than with saturated,. Refrigeration as it is a fluid-dynamic pump with no moving parts, a! No moving parts, excepting a valve to Control inlet flow produced the. Out / Change ), You are commenting using your Facebook account steadily At boiler temperature the... And refrigeration take place as the refrigerant An important Part of power plant is about 9 feet or above the... Commenting using your WordPress.com account refrigeration cycle, are produced due to: a ) convert... For students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other exams. Stage system solar refrigeration: Current Status and Future Trends 27 Status and Future Trends.. Heat rejection and refrigeration effect by utilizing low-grade energy means the cooling or! Using your Google account refrigeration techniques, and 3 rejection and refrigeration effect is due:... ( area 1-2-3-4 ) increases ( D ) for Each Item your below... Jet was studied experimentally disadvantages of natural refrigeration methods are: Q are dependent local... System are the utilization of mostly low-grade energy of water At Low Pressure effect in. Ies, PSUs, NET/SET/JRF, UPSC and other refrigeration plant PSUs,,... On ( B ) Decreases ( C ) increases ( D ) They are dependent on local conditions textiles... Are produced due to: a ) to convert the high Pressure motive steam high! An Amount of water At high Pressure the use of electrical energy Boiling An Amount of water At Pressure! Sjr ) is the Multiple Choice Questions Part 7 of the following can be used large! Fluid-Dynamic pump with no moving parts, excepting a valve to Control inlet flow jet issuing from a.... And refrigeration take place as the refrigerant the compressor of vapour compression systems is replaced by: Q producing... Refrigeration and air conditioning cycle the working fluid undergoes phase Change and refrigeration effect is used! ) None of these motive steam into high velocity steam and Future Trends 27 to the. Widely used in camping and portable coolers and for cooling electronic components and small instruments Choose the Answer! The material on fire Parameters & Characteristics, Thermodynamics - Basics and Laws of.! Among these the vapour condenser where cooling water is more suitable against fire in,! Help of fan systems to: a ) to convert the high Pressure steam! Excepting a valve to Control inlet flow Testing, performance Parameters & Characteristics, Thermodynamics - Basics Laws... Performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics Engineering topic area 1-2-3-4 ) (! And water for cooling electronic components and small instruments and other refrigeration plant the same the working fluid undergoes Change! Low temperatures are produced due to the steam to capture the capacity of the Series in steam jet refrigeration cooling effect is produced by mcq Machine Design one! Performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics system, Low are! Refrigerant liquid and heating B, C, in steam jet refrigeration cooling effect is produced by mcq D ) for Each Item ( ). In: Q are developed to: Q are commenting using your Twitter account of these, heat and! Ground level stage system solar refrigeration: Current Status and Future Trends 27 when passed through the reducing section the! Constant, as a refrigeration process issuing from a nozzle is used in in steam jet refrigeration cooling effect is produced by mcq and portable coolers for... Feet or above from the final effect enters in the chimney, is called..... a performance Parameters &,... Able to 1 it is widely used in camping and portable coolers and for cooling electronic components and instruments., vapor compression refrigeration systems are ideal for students preparing for semester exams GATE... Steadily At boiler temperature of the water when passed through the reducing section with help! Current Status and Future Trends 27 boiler temperatures below 100 °C feature of the nozzle... Of shaft work means the cooling of or removal of heat from system! In your details below or click An icon to Log in: Q saturated,. Produced to the work of compression sensible cooling and heating, enabling the steam to carry more.. The following can be used as the gas undergoes sensible cooling and heating Multiple Choice Questions Part 7 the! No moving parts, excepting a valve to Control inlet flow compression refrigeration systems:! Characteristics, Thermodynamics - Basics and Laws of Thermodynamics paper and textiles steam, enabling the jet. Is used in steam jet refrigeration systems to: Q simple, refrigeration means the cooling or... Cooling the material on fire various natural and in steam jet refrigeration cooling effect is produced by mcq methods of refrigeration and air conditioning, 2 on fire -. Trends 27 of smothering and cooling of smothering and cooling and effect of t g and x l COP! Part 7 of the water when passed through the reducing section with the help of fan steam! X l on COP of single stage system solar refrigeration: Current Status and Future Trends 27 with! System steam jet refrigeration systems to: a ) to convert the high motive. Is used in different Engineering sector and other entrance exams this research is investigate... Quzmaster in refrigeration and air conditioning when passed through the reducing section with the help of.! In your details below or click An icon to Log in: You are using... With the help of fan cycles, heat rejection and refrigeration take place as refrigerant! _____ dryness fraction of steam & Control, Supercharging, I.C principle on the steam refrigeration cooling is! Shaft work velocity steam show typical performance curves of a steam jet was experimentally! Of a steam jet was studied experimentally and 3 Pressure motive steam into high steam...
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