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

Foodspring Shape Shake, 1963 Midge Barbie Doll Value, Veg Restaurants In Nerul, Cathay Pacific Uk, Todd Twelve Forever, South Park Osama Bin Laden Has Farty Pants Full Episode,