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

in steam jet refrigeration cooling effect is produced by mcq 2021