Refrigeration and air conditioning multiple choice questions. Another way of improving the performance of a vaporcompression refrigeration system is by using multistage compression with regenerative cooling. If you want to know how refrigeration system works you can get it in brief here. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that. This case study demonstrates the modeling of a vapour compression refrigeration system using r22 as refrigerant. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of. Learn about vapour compression refrigeration system. The system maintained at the lower temperature is known as refrigerated system while equipment used to maintain this lower temperature is known as refrigerating equipment. 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. Vapour compression refrigeration system slideshare. The vapor compression refrigeration cycle is nearly 200 years old, but it does not seem ready to leave the scene any time soon. In these slides i have discussed about vapour compression system. In addition to above, two main thermodynamic requirements of the. Another way of improving the performance of a vapor compression refrigeration system is by using multistage compression with regenerative cooling.
Find powerpoint presentations and slides using the power of, find free presentations research about vapor compression refrigeration cycle ppt. Liquidsuction subcooler is using a heat exchanger, the heat. Vapour absorption refrigeration system departmen of mechanical engineerin figure 1. Both a steadystate and a transient simulation will be considered. A simple schematic of a vapour absorption refrigeration system the absorption chiller is a machine, which produces chilled water by using heat such as steam, hot water, gas, oil etc. Difference between vapour compression and vapour absorption pdf. Revision of carnot refrigeration cycle by using dry compression. Vapor compression cooling for high performance applications. The vapour compression refrigeration system is by far the most popular and widely used system in refrigeration and air conditioning bot for industrial and domestic applications. Ppt on vapor absorption refrigeration system download vapor absorption refrigeration system presentation transcript. Based upon the condensation process of working fluid, there are two types of chiller. Multistage vapour compression refrigeration systems departmen of mechanical engineerin lecture17 multistage vapour compression refrigeration systems 1. Design of two stage vapour compression refrigeration.
Figure 2proposed vapour compression refrigeration system using matrix heat exchanger v. The vapor compression refrigeration cycle can also be used to liquefy gases after some modifications. Download the cyclepad design of the refrigeration cycle. Jul 21, 2017 the first working vapor compression refrigeration system was built in 1834 by another american who was living in the uk, jacob jenkins. The presentation will give you idea about the vapor compression refrigeration system. Single and multiplestage cascaded vapor compression refrigeration for electronics cooling a thesis. This application analyzes the following refrigeration cycle, and calculates the coefficient of performance. A small refrigerator operating on the absorption principle with parabolic concentrator collector built.
The standard vapour compression refrigeration system section 10. Vars is also belongs to class of vapor cycle is similar to the vcrs. However, in vcrs mechanical work is required as input so it is called work operated cycle and unlike vcrs. Refrigeration onboard ships marine engineering study. Apparatus figure 1 shows the experimental setup in details. Basically, there are two types of chillers based upon the refrigeration cycle. Unit of refrigeration the unit of refrigeration is ton of refrigeration or simply ton denoted by tr. 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. Hello friends in this video i will tell you about vapour compression refrigeration system in hindi vcrs, its components and working of vapour.
Performance analysis of vapour compression refrigeration system with r404a, r407c and r410a jyoti soni 1 and r c gupta corresponding author. A multistage vc refrigeration cycle is very similar to a cascade cycle that uses the same refrigerant in both cycles. View and download powerpoint presentations on vapor compression refrigeration cycle ppt. It is used for all industrial purposes from a small domestic refrigerator to a big air conditioning plant. Koshy mathews2 1 department of mechanical engineering, p. Absorption of refrigerant vapour by a suitable absorbent or adsorbent. The refrigerant used here dose not leave the system but it circulated through the system. The vapour compression cycle which is used in vapour compression refrigeration system is nowadays used for all purpose refrigeration. Design of two stage vapour compression refrigeration system with water intercooler 1pravin d. This blog post will explain how this vaporcompression refrigeration cycle works and how it can be applied, or.
It must be completely miscible both in liquid as well as in vapour as well as in vapour phase. Classification of refrigeration system types of refrigeration. Since jacob perkins ice machine built in 1834, vapor compression refrigeration cycle vcrc has been in service of human beings. Vapor compression refrigeration system basic, working, parts of system introduction. In addition to above, two main thermodynamic requirements of. Vapor compression refrigeration transports large quantities of heat with a small mass of circulating fluid.
Multistage compression refrigeration systems 12312016 jahangirabad. In this system, the working substance is a refrigerant like nh 3, r11, r12. R4admac vapour absorption refrigeration system vars needs rectifier. Ppt vapour compression cycle powerpoint presentation. Chinnappa 1961 investigated intermittent solar refrigeration system theoretical with absorption cycle for ammoniawater and ammonialithium nitrate combinations and compared the results with experimentally. A performance comparison of vapour compression refrigeration.
Vapour compression refrigeration systems presentation transcript. Complete vapour compression refrigerationp p p g systems. Powerpoint presentation on vapor absorption refrigeration system. Lecture18 vapour absorption refrigeration system the vapour absorption refrigeration system consists of. Design and simulation of a vapor compression refrigeration cycle for a micro refrigerator submitted by seyfettin yildiz in partial fulfillment of the requirements for the degree of master of science in mechanical engineering department, middle east technical university by, prof.
Ppt refrigeration systems powerpoint presentation free to. Most of the domestic refrigerators work on the following refrigeration system a vapour compression b. Vapour compression refrigeration systemalfred franklin. Khurmi a textbook of refrigeration and air conditioning is an aptly written textbooks for the students of mechanical engineering while also a mustread for anyone with an interest in the subject. Ch 10, lesson c, page 5 multistage vapor compression refrigeration cycle. For 30 years, topics such as air refrigeration cycles and systems, vapour compression refrigeration systems simple and compound, refrigerants incl. Vapour compression refrigeration system refrigeration vapour. Powerpoint presentation on vapor absorption refrigeration. For purposes of illustration, we will assume that a refrigeration system used to cool air for an office environment. Vapourcompression refrigeration or vaporcompression refrigeration system vcrs, in which the refrigerant undergoes phase changes, is one of the many. Vapour compression refrigeration system refrigeration.
For a decade, due to the tendency of miniaturization in technology, an effort to produce this. The most common refrigeration system in use today involves the input of work from a compressor and uses the vapor compression cycle. System description the layout of the system is shown in figure 1. Introduction a vapor compression refrigeration system is a improved type of air refrigeration system in which a suitable working substance,termed as refrigerant is used. Vapor compression systems can reject heat far from the source by separating the evaporator and condenser in a socalled split system.
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. It is also used in domestic and commercial refrigerators, largescale warehouses for. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of rankine cycle is replaced by. The first working vaporcompression refrigeration system was built in 1834 by another american who was living in the uk, jacob jenkins. The vapor compression refrigeration cycle, step by step. Vapourcompression refrigeration or vaporcompression 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. Design of two stage vapour compression refrigeration system. It can be used whenever a refrigeration or airconditioning requirement occurs. Analysis of a vapor compression refrigeration cycle application. 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. 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. First let us see the advantages of absorption refrigeration system and then we shall see the disadvantages of absorption refrigeration.
School of mechanical engineering georgia institute of technology august 2007. The vapour compression refrigeration and vapour absorption refrigeration systems were developed around 1870. As energy crisis is big problem in the world there is a need of decreasing power consumption of electricity. Vaporcompression refrigeration, in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for.
May 10, 2017 learn about vapour compression refrigeration system. Apr 02, 2016 vapour compression refrigeration system 1. Vapor compression refrigeration cycle versus absorption. Conclusion vapour refrigeration system requires large amount of energyto operate. A refrigeration system is a combination of components and equipment connected in a sequential order to produce the refrigeration effect. Vapor compression refrigeration system pressureenthalpy diagram for refrigerants refrigerator, air conditioner, thermoelectric cooler, heat pump designation, choice, criteria for selection, and characteristics of refrigerants alternatives to vapor compression refrigeration system heat transfer in refrigeration applications. Ch 10, lesson c, page 5 multistage vaporcompression refrigeration cycle. The difference is that the hex is replaced by a flash drum and a mixing vessel. We have seen various types of absorption refrigeration systems like simple absorption cycle, ammoniawater absorption cycle and also the vapor compression refrigeration cycle. Chilled water is produced based on the principle that.
Introduction a single stage vapour compression refrigeration system has one low side pressure evaporator pressure and one high side pressure condenser pressure. A free powerpoint ppt presentation displayed as a flash slide show on id. In addition to the basic components, an actualp, vapour compression refrigeration consists of several accessories for safe and satisfactoryy functioning of the system. A small refrigerator operating on the absorption principle with.
Vaporcompression refrigeration is one of the many refrigeration cycles available for use. The design is to be based upon the ideal vapor compression refrigeration cycle, with four components. Dec 03, 2016 vapour compression refrigeration system in hindi. The vaporcompression refrigeration cycle can also be used to liquefy gases after some modifications. The cycle depicted in figure 1 offers several advantages for electronic cooling applications. Ppt vapour compression cycle powerpoint presentation free. Vapour compression cycle energy management handbook sixth edition, chapter 8 refrigerator air conditioning plant heat pump refrigerator electricmotordriven.
Ppt refrigeration systems powerpoint presentation free. Key components in the refrigeration system are a compressor, a condenser, an evaporator and an expansion valve. Pdf textbook of refrigeration and air conditioning by r. Download textbook of refrigeration and air conditioning by r. Vapor compression refrigeration cycle objective determining the coefficient of performance of a vapour compression refrigeration cycle. How vaporcompression cooling works electronics cooling. It has been and is the most widely used method for. Vapour compression refrigeration systems ppt video online. Let us see the comparison of the vapor absorption cycle and vapor compression cycle. A simple vapor compression refrigeration system consists of the following equipments.
It is also used in domestic and commercial refrigerators, largescale warehouses for chilled or frozen storage of foods and meats. Cycle analysis with liquidsuction subcooler basically there are three methods of subcooling in vapor compression refrigeration system, i. Apr 18, 2014 complete vapour compression refrigerationp p p g systems. We want to design a vapor compression refrigeration cycle to absorb heat from a cool environment and reject it to a warm environment.
Woodruff school of mechanical engineering georgia institute of technology august 2007. College of engineering and technology, pollachi 642002, india. 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. A performance comparison of vapour compression refrigeration system using eco friendly refrigerants of low global warming potential a. Analysis of a vapor compression refrigeration cycle. While some people have viewed this method as environmentally harmful and inefficient, the cycle is still applicable in the industrial sphere. Simple vapour compression refrigeration system slideshare. Joshi 1 department of mechanical engineering, walchand college of engineering, sangli 416415, maharashtra, india abstract refrigeration is the process of reducing and maintaining the temperature of a space or material below the. 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. Layout of the r22 vapour compression refrigeration system. Single and multiplestage cascaded vapor compression refrigeration for electronics cooling approved by. Layout of the r22 vapourcompression refrigeration system. Refrigeration onboard ships marine engineering study materials. Jul 11, 20 ppt on vapor absorption refrigeration system download.
Download vapor absorption refrigeration system presentation transcript. Design of solar based vapour absorption system icems2014. Gandhinagar institute of technology subject applied thermal and hydraulic engineering2140907 branch electrical topic refrigeration vapour compression refrigeration system 2. Compressors, psychrometry and applications of refrigeration and air conditioning have been included and updated for students to conceptualise the subject in a complete manner. Air refrigeration systems authorstream presentation.