Vapour absorption refrigeration system construction working. The ts diagram for a vapor compression refrigeration cycle is shown below. The vapour in this cycle is circulated through the various components of the system, where it undergoes a number of changes in its state or condition. Vapor compression refrigeration systems are used for a variety of cooling refrigeration applications. Experimental analysis of a vapour compression refrigeration system. Interactive computer routines have been composed, in basic language, in order to permit the prediction of the performances of simple, multievaporator multistage compressor vapour compression refrigerators when employing refrigerant r11, r12, r22 or r502. Vapor absorption refrigeration system presentation transcript. Each component is analyzed as a control volume at steady state. In these slides i have discussed about vapour compression system. The adobe flash plugin is needed to view this content. Introduction on vapour compression refrigeration cycle rac. Vapour absorption refrigeration system authorstream. These all four components run a simple vapour compression refrigeration system.
Powerpoint presentation on vapor absorption refrigeration. They showed an inversely proportional relation between the cop and the. For 30 years, topics such as air refrigeration cycles and systems, vapour compression refrigeration systems simple and compound, refrigerants incl. Key components in the refrigeration system are a compressor, a condenser, an evaporator and an expansion valve. Get info of suppliers, manufacturers, exporters, traders of vapor compression refrigeration test rig for buying in india. Vapor compression cooling vcc in electronics powerpoint ppt presentation. Refrigeration cycle in a vapor compression refrigeration system a gas refrigerant is alternatively compressed and expanded and goes from the liquid to the vapor state. Intro refrigeration cycle, vapor compression duration. Discuss the use of flash tank for flash gas removal only. Ts diagram for a vapour compression refrigeration cycle when the refrigerant leaves the evaporator as a saturated vapour b superheated vapour.
Unit of refrigeration the unit of refrigeration is ton of refrigeration or simply ton denoted by tr. Typical vapor compression systems can be represented as shown in figure. View and download powerpoint presentations on vapor compression refrigeration cycle ppt. On the other hand, the cop s of industrial vapour compression systems are much higher 2. Absorption refrigeration an overview sciencedirect topics. The coefficient of performance of the absorption refrigeration systems is very low compared to the vapor compression systems. Multistage vapour compression refrigeration example1 two stage compression system with water intercooler uses r4a as shown in figure1.
Refrigeration system refrigeration refrigerator free. Two stage compression system with liquid subcooler. In order to achieve this we have to expand the liquid refrigerant coming out the condenser. The presentation will give you idea about the vapor compression refrigeration system. Vapor compression systems can reject heat far from the source by separating the evaporator and condenser in a socalled split system. The first working vapor compression refrigeration system was built in 1834 by another american who was living in the uk, jacob jenkins. Winner of the standing ovation award for best powerpoint templates from presentations magazine. In vcrs the main purpose is to get required condition of refrigerant at evaporator inlet pressure and tempearture. The refrigerant leaves the evaporator as a cold vapor lp and enters the compressor where it is compressed into a hot vapor hp. In this video the basic concept of vapour compression refrigeration cycle vcrs is explained in very easy manner. Jan 09, 2018 if you want to know how refrigeration system works you can get it in brief here.
Some basic refrigeration cycles are discussed here through different diagrams. Learning outcome demonstrate understanding of basic vapor compression refrigeration and heat pump systems. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of. Apr 02, 2016 vapour compression refrigeration system 1. Introduction a single stage vapour compression refrigeration system has one low side weight evaporator weight and. In the absorption system, the compressor is replaced by an absorber, generator and a pump.
So refrigeration cycle should be known to understand the refrigeration system. Simple vapour compression refrigeration system consists of mainly four parts compressor, condenser, expansion valve and evaporator. Introduction principle of operation working fluid for vapor absorption refrigeration system vars some experimental results for different fluid various designs of vars cost analysis conclusions 2. One of the most important parts of any refrigeration cycle is the compression of the refrigerant since all the further operations depend on it. At low temperatures the saturation pressures are low 0. Vapor compression refrigeration cycle ppt xpowerpoint. The vapour absorption system uses heat energy, instead of mechanical energy as in vapour compression systems, in order to change the conditions of the refrigerant required for the operation of the refrigeration cycle. These are the evaporator, condenser, compressor and the expansion valve. Ppt vapour compression cycle powerpoint presentation, free. Ppt vapor compression cooling vcc in electronics powerpoint. There are no appreciable pressure drops as the refrigerant flows through the condenser and evaporator. This blog post will explain how this vapor compression refrigeration cycle works and how it can be applied, or you can watch the video explanation, here. Experimental analysis of a vapour compression refrigeration system by using nano refrigerant. Actual vapor compression refrigeration cycle heat pump systems 14 other refrigeration cycles cascade refrigeration systems very low temperatures can be achieved by operating two or more vapor compression systems in series, called cascading.
Calc vapor compression refrigeration cycle r4a duration. Classification of refrigeration system types of refrigeration. Refrigeration and air conditioning ppt linkedin slideshare. Seminar presentation on vapour compression refrigeration. The cop of a refrigeration system also increases as a result of cascading. Ppt vapour compression cycle powerpoint presentation. Refrigeration and air conditioning ppt air conditioning. In this lesson, one will learn how to solve the problems on vapour compression cycle. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Apparatus figure 1 shows the experimental setup in details.
Ammonia water absorption refrigeration cycle matlab. How vaporcompression cooling works electronics cooling. Hey guys this is professor kartik trivedi registration form for offline coaching in ahmedabad link here. The process 12 represents a compression path that may. The refrigeration capacity is 8 tr and the compression is adiabatic reversible process. Vapour compression refrigeration system linkedin slideshare. Vapor compression refrigeration transports large quantities of heat with a small mass of circulating fluid. For a decade, due to the tendency of miniaturization in technology, an effort to produce this.
A free powerpoint ppt presentation displayed as a flash slide show on id. This case study demonstrates the modeling of a vapour compression refrigeration system using r22 as refrigerant. Develop and analyze thermodynamic models of vapor compression systems and their modifications, including sketching schematic and accompanying ts diagrams. Dedicated subcooling is to use a separate refrigeration system with the main system. Download vapor absorption refrigeration system presentation transcript. The ammonia vapour from the generator passes through a series of trays in the analyser and ammonia is separated from water vapour. Absorption of refrigerant vapour by a suitable absorbent or adsorbent. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Steam jet refrigeration system seminar report download introduction in steam jet refrigeration systems, water can be used as the refrigerant.
A fixed quantity of refrigerant, which is any suitable gas, is filled in the closed system of four components, i. Why do we need throttling in vapor compression refrigeration. Both a steadystate and a transient simulation will be considered. Lecture18 vapour absorption refrigeration system the vapour absorption refrigeration system consists of. Refrigeration cycle is the basis of all refrigeration systems. Compressors, psychrometry and applications of refrigeration and air conditioning have been included and updated for students to conceptualise the subject in a complete manner.
Gas refrigeration cycle a schematic diagram b ts diagram. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Pdf textbook of refrigeration and air conditioning by r. Learn about vapour compression refrigeration system.
Introduction the vapour absorption refrigeration system is one of the method of producing refrigerating effect. Oct 16, 2017 in this video the basic concept of vapour compression refrigeration cycle vcrs is explained in very easy manner. Assuming the compression process to be isentropic find. Currently, the mechanical vapor compression systems used for this purpose, use large. Uses heat energy instead of mechanical energy as in vapour compression system. Ppt refrigeration cycles powerpoint presentation free. The main limitation is the cooling temperatures around the ice point. What are the advantages of vapour compression refrigeration. Jan 08, 2017 1 method of compression of the refrigerant.
Vapourcompression refrigeration systems sciencedirect. The refrigerant expanding through the valve undergoes a throttling process. Simple vapour compression refrigeration system slideshare. Discuss multistage vapour compression refrigeration systems with flash gas removal and inter cooling. The evaporating temperature is 25 oc and condensing temperature 47 oc. Multistage vapour compression refrigeration systems departmen of mechanical engineerin lecture17 multistage vapour compression refrigeration systems 1. Liquidsuction subcooler is using a heat exchanger, the heat exchange of the liquid line output condenser to suction compressor inlet.
It can be used whenever a refrigeration or airconditioning requirement occurs. Flownex was used to simulate a vapour compression refrigeration system using r22 as refrigerant. Vapor compression refrigeration system basic, working, parts of system, advantages, and disadvantages introduction. Find powerpoint presentations and slides using the power of, find free presentations research about vapor compression refrigeration cycle ppt. These systems were applied successfully to refrigeration in the early years of this century. Ppt vapor compression cooling vcc in electronics powerpoint presentation free to download id. The refrigeration capacity is 8 tr and the compression is. Vapour compression refrigeration system slideshare. In the vapour absorption system, an absorber, a pump, a generator and a pressurereducing valve replace the compressor. In the vapour absorption system the compressor is replaced by an absorber,a pump,a generator,and a pressure reducing valve. Vapour compression units are the most widely used refrigeration systems. Vapour compression refrigeration is the primary method to provide mechanical cooling. Purpose of refrigeration examples and applications choice of coolant and refrigerants phase diagram of water and co 2 vapor compression refrigeration system pressureenthalpy diagram for refrigerants refrigerator, air conditioner, thermoelectric cooler, heat pump designation, choice, criteria for selection, and. All vapor compression systems consist of the following four basic components alongwith the interconnecting piping.
In a refrigeration system, the rate at which the heat is absorbed in a cycle from. Gandhinagar institute of technology subject applied thermal and hydraulic engineering2140907 branch electrical topic refrigeration vapour compression refrigeration system 2. If you continue browsing the site, you agree to the use of cookies on this website. Vapor compression refrigeration cycle versus absorption. Pdf various criteria in optimization of a vapor compression. Vaporcompression refrigeration, in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for airconditioning of buildings and automobiles. While some people have viewed this method as environmentally harmful and inefficient, the cycle is still applicable in the industrial sphere. Steam jet refrigeration system seminar report download. The vapor compression cycle circulates a fluid through a compressor, condenser, expansion valve, and evaporator, in order to absorb heat from a refrigerated space at a low temperature and give off heat at a higher temperature to the surroundings, thus keeping the refrigerated space cool. Vapor compression refrigeration test rig at best price in india.
Natural gas plants, petroleum refineries, and petrochemical plan. Vapour compression refrigeration or vapor compression refrigeration system vcrs, in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for airconditioning of buildings and automobiles. Here harshit solves some sample questions which will help one to recollect and remember all the topics and equations which were discussed in the previous lesson. Upon leaving the compressor, the vapor enters the condenser side of the chiller where heat is transferred from the refrigerant to the airwater side of the condenser where it is circulated to an accopen cooling. Vapor compression refrigeration cycle ts diagram below is a possible cyclepad design of a refrigeration cycle. Dec 31, 2016 vapour compression refrigeration system 1. Vapor compression refrigeration, in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for airconditioning of buildings and automobiles. Revision of carnot refrigeration cycle by using dry compression.
The vapor compression refrigeration cycle engineering model. There are innumerable applications of such systems and they are the major consumer of electricity around the world. The vapor compression refrigeration cycle, step by step. Mechanism of simple vapor compression refrigeration system. The vapour compression refrigeration and vapour absorption refrigeration systems were developed around 1870. Since jacob perkins ice machine built in 1834, vapor compression refrigeration cycle vcrc has been in service of human beings. Multistage vapour compression refrigeration systems departmen of mechanical engineerin a multistage system is a refrigeration system with two or more lowside pressures. Ppt refrigeration systems powerpoint presentation free. Although the initial cost of an absorption system is higher than that of a compression system, operational costs are much lower if waste heat is used. Refrigeration refrigeration refrigeration a process where heat is transferred from a lowerto a higher temperature level by doing work on a system.
Lithium bromide water vapour absorption refrigeration system m5. In simple vapour compression refrigeration system pressure ration up to specific limit can be achieved. Introduction on vapour compression refrigeration cycle. Introduction a single stage vapour compression refrigeration system has one low side pressure evaporator pressure and one high side pressure condenser pressure. Jul 22, 2016 vapour compression refrigeration system bobin saji george.
It is also used in domestic and commercial refrigerators, largescale. Vapor compression refrigeration system basic, working. In this system, on the evaporator installed within the refrigeration system and ice structural unit, as a source of low temperature, it absorbs the heat. It is also used in domestic and commercial refrigerators, largescale warehouses for. The simplest gas refrigeration cycle is the reversed brayton cycle. For instance, the cop of the two stage lithium bromide system is about 1. Find here online price details of companies selling vapor compression refrigeration test rig. Energy management handbook sixth edition, chapter 8. Vapor compression refrigeration cycle objective determining the coefficient of performance of a vapour compression refrigeration cycle. It is also used in domestic and commercial refrigerators, largescale warehouses for chilled or frozen storage of foods and meats. Hence, ammonia absorption refrigeration may be competitive in term of economics.
The vapor compression refrigeration cycle is nearly 200 years old, but it does not seem ready to leave the scene any time soon. Combined vapour compressionejector refrigeration system. One ton of refrigeration means amount of heat required to remove from one short ton of water at 00c to produce ice at 00c at 24 hours. Design of two stage vapour compression refrigeration system. Vapor compression cooling for high performance applications.
815 695 717 480 85 1177 132 1396 801 1623 301 1536 1199 1333 1155 825 1643 1211 905 1642 1364 318 1281 1197 986 732 1231 312 485 269 1083 1346 1626 1591 854 242 386 1363 1028 624 29 491 1294