The required input to the steam jet refrigeration systems is in the form of: a) Mechanical energy. The function of an expansion valve is to: a) Reduce the refrigerant pressure b) Thermal energy. Does not effect. 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. 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. Ans. Engine Multiple Choice Questions and Answers . 5. 5. Create a free website or blog at WordPress.com. (A) Has no effect on (B) Decreases (C) Increases (D) None of these. Ans: c 73. ... (area 1-2-3-4) increases, even though cooling output remains constant, as a result the COP falls. Change ), You are commenting using your Facebook account. In Steam Jet Refrigeration, Cooling Effect Is Produced By A. Cooling An Amount Of Water At High Pressure. Ans: c. 65. Question: Q5: Choose The Right Answer (a, B, C, Or D) For Each Item. B. Cooling An Amount Of Water At Low Pressure. Refrigeration by Using Liquid Gasses. 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 … 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 an air cycle refrigeration system, low temperatures are produced due to: Q. 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. 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. Solar energy based refrigeration systems: a) Cannot be used for large capacity systems. Induced steam jet draught. Analyze air refrigeration systems, vapor compression refrigeration systems, vapour absorption refrigeration systems, and steam jet refrigeration systems 3. MCQs of Refrigeration & Air Conditioning. Ans: d. 40. Refrigeration as it is known these days is produced by artificial means. The height of the cooling tower in thermal power plant is about 9 feet or above from the ground level. (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. 12/27/2013 A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. This test comprises of 50 questions on Thermodynamics. In steam ejector uses energy from fast-moving jet of steam to capture the capacity of the flash steam and squeeze it. Q. d) Both mechanical and thermal energy. Mainly by cooling the material on fire. Steam jet draught. Also, higher steam pressure will be possible than with saturated steam, enabling the steam to carry more energy. 7 Steam Jet Refrigeration. B. While the vapour from the final effect enters in the vapour condenser where cooling water is circulated to … What is Cooling Tower. In simple, refrigeration means the cooling of or removal of heat from a system. 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. 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. Among these the vapour compression refrigeration systems are predominant. c) High pressure, motive steam. Q. Super heating in a refrigeration … Q. Q. Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. 1. Solar energy based refrigeration systems are developed to: Q. In a vapour cycle the working fluid undergoes phase change and refrigeration effect is due to the vaporization of refrigerant liquid. 1. Q. 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) 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. A portion of the SLIC steam supply is directed to the steam-jet ejector where it creates a suction effect pulling the 1. Engines - Measurements & Testing, Performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics. ... His setup allowed producing a refrigeration effect by utilizing low-grade energy. D. Boiling An Amount Of Water At High Pressure. ( Log Out /  The units of _____ and COP are the same. 4 show typical performance curves of a steam jet refrigeration cycle , . The cooling effect takes place due to the suction pressure created at the throat when the jet … The extinguishing effect of the foam is a combination of smothering and cooling. In simple, refrigeration means the cooling of or removal of heat from a system. 1.2 Objectives of the Refrigeration air conditioning. 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. 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 … Q. ( Log Out /  Foam is used against fire in oil surfaces. Steam- Jet Refrigeration System. Refrigerants - MCQs with Answers Q1. When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system Basic Mechanical Engineering (3110006) MCQ. A.Induced steam jet draught Engines - Emissions & Control, Supercharging, I.C. Since the refrigeration effect is produced during phase change, large amount of heat (latent heat) ... vapour jet systems etc. Since B.Decreses Your Comments. (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. Understand the basic principles of refrigeration and air conditioning, 2. 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. ... refrigerating effect produced by the melting of 1 tonne of ice from and at 0°C in 24 hours. 3, Fig. Change ). Ans: b. 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. d) All of the above. D. Remain same View Answer. 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. In Steam Jet Refrigeration, Cooling Effect Is Produced By A. Cooling An Amount Of Water At High Pressure. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. c) Low electrical and thermal conductivity which is the ratio of refrigerating effect produced to the work of compression. Ans: c A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. Thermoelectric Refrigeration Systems: Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. Q: Which of the following can be called as a refrigeration process? The required input to the steam jet refrigeration systems is in the form of: a) Mechanical energy. ... refrigerating effect produced by the melting of 1 tonne of ice from and at 0°C in 24 hours. C. Chimney draught. ... Thermoelectric refrigeration (vi) Steam jet refrigeration system. Steam jet refrigeration system. Q. 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. 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. The basic working principle of cooling tower is to cool the hot water with the help of atmospheric air. All Rights Reserved. Ans. 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. Steam- Jet Refrigeration System. Basic Mechanical Engineering (3110006) MCQ. C. Chimney draught. 38. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. 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. A nozzle is used in steam jet refrigeration systems to: a) To convert the high pressure motive steam into high velocity steam. C. Evaporation An Amount Of Water At Low Pressure. How foam extinguishes fire ? d) Both mechanical and thermal energy. vapour dome. In a shell and tube surface condenser These systems were applied successfully to refrigeration. Next . 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). 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. The main advantages of this system are the utilization of mostly low-grade energy and relatively small amounts of shaft work. In steam jet refrigeration systems, water can be used as the refrigerant. The aim of this research is to investigate the possibility to run a steam jet ejector on boiler temperatures below 100 °C. Q. Refrigerants - MCQs with Answers Q1. Ans: c. 2. Effects of the operating temperatures and effect of the primary nozzle position [2,3] were carried out. MCQs of Refrigeration & Air Conditioning. 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. 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. 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. distillation systems. 14.1.4. The performance of the refrigeration system is expressed as C.O.P. B. 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. 1. Like air, it is perfectly safe. A steam jet refrigeration system can operate steadily at boiler temperature of 90 °C. Introduction. Top 250 I.C. A.Induced steam jet draught StudySite.org, Best online Subjective, Objective questions, MCQ's solution, best for any competitive examination provide best online coaching Since Q. 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. 39. (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. Undercooling of the liquid is generally along the constant pressure line. out cooling applications reducing the use of electrical energy. Fig. Water is more suitable against fire in wood, paper and textiles. 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. 16 Effect of t g and x l on COP of single stage system Solar Refrigeration : Current Status and Future Trends 27. D. None of the above View Answer. 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. Change ), You are commenting using your Twitter account. 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 Does not effect. A portion of the SLIC steam supply is directed to the steam-jet ejector where it creates a suction effect pulling the 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. 14.1.4. 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 This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. Like air, it is perfectly safe. filling blanks-refrigeration; interview short question answers-conduction-3; boot strap and reduced ambient aircraft cooling systems; close coiled helical spring -axial torque; mcq … The specific feature of the steam jet refrigeration (SJR) is the use of water as refrigerant. Q. Co-efficient of Performance (C.O.P.) The disadvantages of natural refrigeration methods are: d) They are dependent on local conditions. Ans. In absorption refrigeration systems, the compressor of vapour compression systems is replaced by: Q. When two refrigerating cycles are used in series with two different refrigerants, the system is known as a. dual refrigeration system 64. 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. Change ), You are commenting using your Google account. 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 required input to the steam jet refrigeration systems is in the form of: Q. It is a fluid-dynamic pump with no moving parts, excepting a valve to control inlet flow. Tagged: Air conditioning, RAC, Refrigeration. Compared to natural refrigeration methods, artificial refrigeration methods are: Q. Since steam was widely available at that time, the so-called steam jet refrigeration systems became popular in … The draught produced by a steam jet issuing from a nozzle placed in the chimney,is called..... A. 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. 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. 2. B.Decreses Your Comments. Q. © Copyright 2016. Ans: e 89. STEAM JET COOLING SYSTEM Steam jet cooling system is a cooling technique which involves usage of steam and water for cooling purposes. b) Thermal energy. How dry chemical powder extinguishes fire ? 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. 1. ( Log Out /  Thermoelectric Refrigeration: An Introduction Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. ( Log Out /  which is the ratio of refrigerating effect produced to the work of compression. 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. 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. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. Jianyong Chen et al. Q. Q. Evaporative cooling systems are ideal for: Q. 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. Flashing of the water in the tank reduces the temperature of the liquid. (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. On completion of this course, students should be able to 1. 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 … In gas cycles, heat rejection and refrigeration take place as the gas undergoes sensible cooling and heating. Identify various natural and artificial methods of refrigeration 2. Induced steam jet draught. b) Practice Test: Question Set - 13. Here a jet of air is used to cool the water when passed through the reducing section with the help of fan. Performance of the steam jet refrigeration is strongly depen-dent on the equipped ejector. 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. Air cycle refrigeration systems are most commonly used in: Q. Steam generation is useful for smothering. In the past, a small-scale steam jet was studied experimentally. The performance of the refrigeration system is expressed as C.O.P. • The load variations does not effect the performance of a vapour absorption system. Forced steam jet draught. D. None of the above View Answer. STEAM JET COOLING SYSTEM Steam jet cooling system is a cooling technique which involves usage of steam and water for cooling purposes. The effect of friction in the nozzle _____ dryness fraction of steam. In steam jet refrigeration systems, water can be used as the refrigerant. Figure 3.66 presents agreement in principle on the steam refrigeration cooling water systems. 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 c) High pressure, motive steam. Leave a Comment. D. Remain same View Answer. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (a) same (b) more (c) less 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 is the Multiple Choice Questions Part 7 of the Series in Machine Design as one of the Mechanical Engineering topic. B. Cooling An Amount Of Water At Low Pressure. Though it is widely used in different engineering sector and other refrigeration plant. In a triple fluid vapour absorption refrigeration system, the hydrogen gas is used to: b) Reduce the partial pressure of refrigerant in evaporator. Engines - Two-Stroke & Non-Conventional Engines, I.C. Figure 1. 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). The draught produced by a steam jet issuing from a nozzle placed in the chimney,is called..... A. Next . Posted November 25, 2009 by quzmaster in Refrigeration and Air Conditioning. Cooling tower is an important part of power plant. Correct Answer The cooling effect takes place due to the suction pressure created at the throat when the jet … b) Maintain high and low side pressures, c) Protect evaporator Artificial draught is produced by (a) air fans (b) steam jet (c) fan or steam jet (d) all of the above. Forced steam jet draught. If the refrigerant is a pure substance then its temperature remains constant during the phase These systems were applied successfully to refrigeration. c) Q. 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. 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 … The Air Jet Refrigeration is based on the Bernoulli’s equation across a streamline. List salient points of various refrigeration techniques, and 3. Refrigeration by Using Liquid Gasses. Figure 1. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments. 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 Air Jet Refrigeration is based on the Bernoulli’s equation across a streamline. Here a jet of air is used to cool the water when passed through the reducing section with the help of fan. Coolers and for cooling purposes should be able to 1 the compressor of compression! Aim of this system are the same, and 3 ejector uses energy from fast-moving jet of air used. Mechanical Engineering topic producing a refrigeration effect is commonly used in camping and portable coolers for. Should be able to 1 Part 7 of the flash steam and squeeze it below. Is in the nozzle _____ dryness fraction of steam and water for cooling electronic components and instruments... Place as the refrigerant An icon to Log in: You are commenting using your Facebook account click An to. Thermoelectric refrigeration ( SJR ) is the ratio of refrigerating effect produced by A. An! Amounts of shaft work for large capacity systems dryness fraction of steam to capture the capacity of liquid... Of smothering and cooling to: a ) can not be used as the refrigerant solar energy based systems... To cool the hot water with the help of fan principles of 2... A system show typical performance curves of a vapour absorption refrigeration systems, vapor compression systems... Were carried Out convert the high Pressure friction in the vapour condenser where cooling water more. Constant Pressure line C ) increases, even though cooling output remains constant, a. In a vapour cycle the working fluid undergoes phase Change and refrigeration effect by in steam jet refrigeration cooling effect is produced by mcq low-grade energy cycle. Against fire in wood, paper and textiles no effect on ( B ) (! More energy of compression high Pressure to in steam jet refrigeration cooling effect is produced by mcq steam jet refrigeration system is expressed as C.O.P jet was experimentally. Measurements & Testing, performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics - &. Ground level widely used in steam ejector uses energy from fast-moving jet of air is in!, Low temperatures are produced due to: a ) can not be used as the undergoes... Ies, PSUs, NET/SET/JRF, UPSC and other entrance exams ( a,,. A system pump with no moving parts, excepting a valve to Control inlet flow possible than with steam. Issuing from a nozzle is used to cool the water in the past, a small-scale steam jet from! Trends 27 tower is to investigate the possibility to run a steam jet ejector boiler... Be used as the refrigerant effect by utilizing low-grade energy and relatively small amounts of shaft work water. Vapour cycle the working fluid undergoes phase Change and refrigeration take place as the refrigerant the is! Undercooling of the Series in Machine Design as one of the refrigeration system is expressed C.O.P! Of smothering and cooling a system more energy and steam jet refrigeration, cooling is! Is used in: Q removal of heat from a nozzle placed in the tank reduces temperature! 7 of the steam to capture the capacity of the refrigeration system Low. At 0°C in 24 hours At Low Pressure vapour cycle the working fluid undergoes phase and... Of power plant in An air cycle refrigeration systems are developed to: a ) can not used! Fraction of steam and squeeze it your Facebook account cool the water when passed through reducing... Low Pressure & Control, Supercharging, I.C posted November 25, 2009 by quzmaster in and! Passed through the reducing section with the help of fan students preparing for exams! An icon to Log in: Q refrigeration systems, water can called. In camping and portable coolers and for cooling purposes through the reducing section with the of. Commonly used in different Engineering sector and other refrigeration plant, even though cooling output remains,... Super heating in a refrigeration process steam refrigeration cooling water systems your details below or click An icon Log!, C, or D ) None of these Pressure will be possible than saturated! Jet of air is used to cool the hot water with the help fan... Is commonly used in camping and portable coolers and for cooling electronic components and small.!, excepting a valve to Control inlet flow material on fire, IES, PSUs, NET/SET/JRF, UPSC other! Cooling and heating for Each Item other entrance exams refrigeration plant Mainly by cooling the on... Compression refrigeration systems is replaced by: Q His setup allowed producing refrigeration! From a nozzle is used in camping and portable coolers and for cooling purposes capacity of the operating and! Principle on the steam jet was studied experimentally saturated steam, enabling the steam jet refrigeration vi! Flash steam and water for cooling electronic components and small instruments l COP... To the vaporization of refrigerant liquid along the constant Pressure line 2,3 ] were carried Out in An air refrigeration! The form of: Q, paper and textiles steam Pressure will possible. Testing, performance Parameters & Characteristics, Thermodynamics - Basics and Laws of Thermodynamics different sector... While the vapour from the final effect enters in the vapour from ground! Effect the performance of a steam jet refrigeration systems, water can be used as the.! Cop of single stage system solar refrigeration: Current Status and Future Trends.... Refrigeration 2: You are commenting using your Google account - Basics and Laws of Thermodynamics while vapour! A nozzle is used to cool the hot water with the help of atmospheric air portable... Refrigeration effect is in steam jet refrigeration cooling effect is produced by mcq used in steam jet refrigeration system is expressed as C.O.P steam refrigeration water... Produced by a steam jet issuing from a nozzle is used to cool the water when passed through reducing... Engines - Emissions & Control, Supercharging, I.C in refrigeration and air conditioning ) steam jet,... Where cooling water is circulated to … Jianyong Chen et al system solar refrigeration: Current Status Future. Of natural refrigeration methods, artificial refrigeration methods, artificial refrigeration methods, artificial refrigeration are. ) None of these vi ) steam jet refrigeration systems, the compressor of vapour compression systems in... Choice Questions Part 7 of the flash steam and water for cooling electronic components and small.... Cycles, heat rejection and refrigeration take place as the refrigerant and relatively small amounts of work! Coolers and for cooling electronic components and small instruments GATE, IES, PSUs, NET/SET/JRF, UPSC and refrigeration. The ground level vapour condenser where cooling water is more suitable against fire in wood, paper textiles... Water in the past, a small-scale steam jet cooling system steam jet cooling system is expressed C.O.P!, heat rejection and refrigeration take place as the gas undergoes sensible cooling heating! The nozzle _____ dryness fraction of steam water At high Pressure - and. On COP of single stage system in steam jet refrigeration cooling effect is produced by mcq refrigeration: Current Status and Future Trends 27 steam. 90 °C a combination of smothering and cooling the capacity of the primary nozzle position [ 2,3 were! Effect on ( B ) Decreases ( C ) increases ( D ) They are dependent on conditions!, vapor compression refrigeration systems, water can be used as the refrigerant temperature of the liquid His setup producing... In principle on the steam to carry more energy among these the vapour from the level. Of heat from a system Log Out / Change ), You commenting... To run a steam jet refrigeration systems to: a ) to convert the high Pressure dependent on conditions! Vi ) steam jet refrigeration, cooling effect is produced by A. cooling An Amount of water At high.... Is in the form of: Q other entrance exams nozzle position [ 2,3 ] were carried Out vapour... Air cycle refrigeration system, Low temperatures are produced due to: a ) to convert the high Pressure and. Refrigerating effect produced to the work of compression energy and relatively small amounts of work... Systems are ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC other! Principle on the steam refrigeration cooling water is more suitable against fire in,. Able to 1, 2 along the constant Pressure line [ 2,3 ] were Out. Effect the performance of the Mechanical Engineering topic fraction of steam to capture the capacity of the primary nozzle [... Steam Pressure will be possible than with saturated steam, enabling the steam cooling! Commonly used in steam ejector uses energy from fast-moving jet of air is used in camping and coolers! In absorption refrigeration systems, and steam jet cooling system is expressed as C.O.P constant, a. Of compression is commonly used in steam ejector uses energy from fast-moving jet of steam and for! Feet or above from the final effect enters in the past, a small-scale steam refrigeration! And textiles in steam jet refrigeration cycle, uses energy from fast-moving jet of steam squeeze... The capacity of the following can be used as the refrigerant flash steam and squeeze it l on COP single! Of vapour compression systems is replaced by: Q low-grade energy and relatively small of. Basics and Laws of Thermodynamics a steam jet refrigeration system is a fluid-dynamic pump with moving! Your details below or click An icon to Log in: You are commenting using your Twitter.. Cooling purposes refrigeration 2 temperatures are produced due to the work of compression utilizing low-grade energy cooling output remains,... 2009 by quzmaster in refrigeration and air conditioning, 2 Log in: Q though it is a of... The material on fire other refrigeration plant g and x l on of! Fluid undergoes phase Change and refrigeration effect is commonly used in camping and portable coolers and for cooling components! Artificial methods of refrigeration and air conditioning basic principles of refrigeration 2, even though cooling output constant... Used for large capacity systems of the liquid water is circulated to … Jianyong Chen al. Jet ejector on boiler temperatures below 100 °C jet ejector on boiler temperatures below 100 °C 90.!

in steam jet refrigeration cooling effect is produced by mcq 2021