The refrigeration system used was a direct air expansion unit powered by steam from the ships boiler. Vapor compression cooling for high performance applications. Comparison of vapour absorption system with vapour. Steam jet refrigeration system seminar report download introduction in steam jet refrigeration systems, water can be used as the refrigerant. Apr 02, 2016 vapour compression refrigeration system 1. At low temperatures the saturation pressures are low 0. Vapor compression refrigeration cycle engineering essay. What are the applications of vapour absorption refrigeration.
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. Pdf effect of evaporator temperature on vapor compression. The vapour at low pressure and low temperature point 2 enters to compressor where it is compressed reversible adiabatically isentropically. As stated earlier, the system consists of an evaporatorcondenser, shown as heat transfer a, a mechanically driven vapor compressor, a three. Design of two stage vapour compression refrigeration. Multistage system of cooling is widely used there, where ultralow temperatures are required, but can not be produced economically through the use of a singlestage system. Lee et al 2006, present a combination of vapor compression cycle and natural. Seminar presentation on vapour compression refrigeration. This is because the compression ratio is too high to reach the temperatures necessary for evaporates and condenses the steam. Vapour absorption system vapour absorption system is an attractive method for utilizing low grade energy directly for cooling. This case study demonstrates the modeling of a vapour compression refrigeration system using r22 as refrigerant. Both a steadystate and a transient simulation will be considered.
The vapour compression refrigeration and vapour absorption refrigeration systems were developed around 1870. Incro water is therefore said to be the great source of making a water pure by doing the purification processes. Powerpoint compression software software free download. Analysis of a vapor compression refrigeration cycle application. It is also used in domestic and commercial refrigerators, largescale.
Vapour compression system vapour absorption system. Mechanism of simple vapor compression refrigeration system. The presentation will give you idea about the vapor compression refrigeration system. Author studied using computer software for a system of refrigeration capacity 1 kw. Comparison of vapor absorption system with vapor compression. The presentation of data, in a conceptual form, was opted for in an effort better. While vaporcompression technologies have served heating, ventilation, and airconditioning hvac needs very effectively, and have been the dominant hvac technology for close to 100 years, the conventional refrigerants used in vaporcompression equipment contribute to global climate change when released to the atmosphere. Schematic diagram of a simple vapor compression refrigeration system is shown in fig. A free powerpoint ppt presentation displayed as a flash slide show on id. Working fluid for vapor absorption refrigeration system vars some experimental results for different fluid various designs of vars cost analysis conclusions 2.
Vapour compression refrigeration systems free download as powerpoint presentation. Nxpowerlite ppt compressor software reduces the size of large powerpoint files in seconds. Vars is also belongs to class of vapor cycle is similar to the vcrs. Vapor compression refrigeration system basic, working.
Recent developments in simulation techniques for vapour. The cycle depicted in figure 1 offers several advantages for electronic cooling applications. Design of two stage vapour compression refrigeration system. Eames1 1centre for sustainable technologies, school of the built enviroment, university of ulster newtownabbey bt37 0qb, united kingdom. Flow diagram of singleeffect vapor compression distillation system. 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. Lecture 32 analysis of complete vapour compression system.
Performance analysis of vapour compression refrigeration system with r404a, r407c and r410a jyoti soni 1 and r c gupta corresponding author. The evaporating temperature is 25 oc and condensing temperature 47 oc. Pharmaceutical vapor compression distillation vcd, improperly known as thermocompression or such as mechanical vapor recompression mvr or mechanical vapor compression mvc distillation, too, is the main way to produce wfi water for injection and grade waters for pharmaceutical use. Vapor compression refrigeration system basic, working, parts of system, advantages, and disadvantages introduction. Simple vapour compression system mechanical engineering. Figure 1 depicts a typical, singlestage vaporcompression system. Hippo is a powerful user friendly maintenance management software solution for companies in a variety of industries. Jun 19, 2014 it is a type of common refrigeration system. Lecture18 vapour absorption refrigeration system the vapour absorption refrigeration system consists of. Ppt vapour compression cycle powerpoint presentation.
Steam jet refrigeration system seminar report download. These systems were applied successfully to refrigeration in the early years of this century. 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. Mechanical vapor compression mechanical vapor compression is very suitable for the recovery of high quality water. Development of the vapour compression system in mid 19th century. 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. Vapour compression cycle energy management handbook sixth edition, chapter 8 refrigerator air conditioning plant heat pump refrigerator electricmotordriven. 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. Discuss multistage vapour compression refrigeration systems with flash gas removal and inter cooling. In the diagram, s 12 is isentropic compression in the compressor. Introduction a single stage vapour compression refrigeration system has one low side pressure evaporator pressure and one high side pressure condenser pressure. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer this is used solely as a reading device such as nuvomedias rocket ebook. An ebook reader can be a software application for use on a computer. Vapour compression system 1st year animation compressors functions.
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. 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. Simple vapour compression refrigeration system slideshare. Compress powerpoint files with nxpowerlite ppt compressor. Find powerpoint presentations and slides using the power of, find free presentations research about vapor compression refrigeration cycle ppt. Control strategy for aircraft vapor compression system. Vapor compression systems can reject heat far from the source by separating the evaporator and condenser in a socalled split system. Analysis of a vapor compression refrigeration cycle. In this lesson, one will learn how to solve the problems on vapour compression cycle. It is also used in domestic and commercial refrigerators, largescale warehouses for chilled or frozen storage of foods. Discuss the use of flash tank for flash gas removal only. Low freezing point by which we can maintain the low evaporator temperature. While vapor compression technologies have served heating, ventilation, and airconditioning hvac needs very effectively, and have been the dominant hvac technology for close to 100 years, the conventional refrigerants used in vapor compression equipment contribute to global climate change when released to the atmosphere.
Experimental analysis of a vapour compression refrigeration system. In simple vapour compression refrigeration system pressure ration up to specific limit can be achieved. Flownex was used to simulate a vapour compression refrigeration system using r22 as refrigerant. Multistage vapour compression refrigeration example1 two stage compression system with water intercooler uses r4a as shown in figure1.
Introduction a single stage vapour compression refrigeration system has one low side. Multistage vapour compression refrigeration systems departmen of mechanical engineerin lecture17 multistage vapour compression refrigeration systems 1. Hippo now has more than 1,100 customers and 10,000 active users. I am looking for a free software to compress large ppt file in order to email as attachment. It always amazes me at how much it can compress a powerpoint file. In the illustration of the models of throttling devices, only those for capillary tubes are given because capillary tubes are used widely. We want to design a vaporcompression refrigeration cycle to absorb heat from a cool environment and reject it to a warm environment. It is apparent that the most efficient component of the vapor compression system is liquid vapor heat exchanger 28. An ebook reader can be a software application for use on a. Ueeneej103a establish the basic operating conditions of.
It is also used in domestic and commercial refrigerators, largescale warehouses for. These all four components run a simple vapour compression refrigeration system. Nonvapor compression hvac technologies report department. 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 linkedin slideshare. This application analyzes the following refrigeration cycle, and calculates the coefficient of. Simple vapour compression refrigeration system consists of mainly four parts compressor, condenser, expansion valve and evaporator. Vapor compression refrigeration transports large quantities of heat with a small mass of circulating fluid. Hippo has been providing easytouse and affordable software since 2004. The compression process increases the temperature of refrigerant from lower limit t2 to the upper limit tl. The design is to be based upon the ideal vaporcompression refrigeration cycle, with four components. This is because the compression ratio is too high to reach the temperatures. In the vapour absorption system, an absorber, a pump, a generator and a pressurereducing valve replace the compressor. Review of vapour absorption refrigeration and vapour.
Vapour absorption system can be compared with vapour compression system in 9 aspects, they are energy input, moving part, evaporator pressure, load variation, evaporator exit, coefficient of performance, capacity, refrigerant and lowest temperatures. Ppt vapour compression cycle powerpoint presentation, free. Gandhinagar institute of technology subject applied thermal and hydraulic engineering2140907 branch electrical topic refrigeration vapour compression refrigeration system 2. Figure 1 shows a general simplified flow diagram of a basic mechanical vapor compression distillation system. While the employment of natural refrigerants continues to this day, the development of. The refrigeration capacity is 8 tr and the compression is adiabatic reversible process. Energy management handbook sixth edition, chapter 8. Free software to compress ppt file microsoft community. Ppt repair software repairs corrupted powerpoint presentation files or repairing the corruption in damaged powerpoint files that are corrupted due to unexpected system shutdown, and virus attacks. Working fluid for vapor absorption refrigeration system vars properties of working fluid refrigerant absorbent system. Future, highperformance military aircraft will likely use vapor compression systems to manage the temperatures of multiple loads which are time. At point 1, let t 1, p 1 and s 1 be the temperature, pressure and entropy of the vapour refrigerant. The system has a main parts like compressor, condenser receiver, refrigerant control device and evaporator. This is an important advantage as against the conventional vapour251compression system which operates on high grade energy.
The refrigerated hold was insulated using powdered charcoal. The system has a main parts like generator, rectifier, condenser absorber and evaporator. View and download powerpoint presentations on vapor compression refrigeration cycle ppt. Comparison of vapor absorption system with vapor compression system can be done in 9 aspects. Vars usually comes in higher capacitiesmore than 50 tr until now but china has invented lesser capacity vars machines2 tr, so it founds its applications in. Assuming the compression process to be isentropic find. Dec 31, 2016 vapour compression refrigeration system 1. Mar 09, 2016 comparison of vapor absorption system with vapor compression system can be done in 9 aspects. Absorption of refrigerant vapour by a suitable absorbent or adsorbent. The refrigerant as a mixture of liquid and vapour corresponding to state point 1 enters the compressor where isentropic compression takes place. Cvishwakarma government engineering college, ahmedabad. Discuss the use of flash tank for inter cooling only. Vapour compression refrigeration system vapour absorption refrigeration system. Vapor compression refrigeration cycle ppt xpowerpoint.
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