The above figure shows the objectives of refrigerators and heat pumps. In vapour compression refrigerating system, the work is supplied by the compressor. To study the analysis of simple vapour compression cycle and explain the types of vapour compression cycle with ts and ph diagram. Numerical simulation of vapour compression refrigeration system. The vapor compression refrigeration cycle, step by step araner. A modified vapour compression refrigeration system consists of five components such as evaporator, liquid vapour heat exchanger, compressor, condenser and expansion device. The other components of the system are condenser, receiver, expansion value and evaporator as in the vapour compression system. Components of vapor compression refrigeration system 1. This case study demonstrates the modeling of a compression vapour refrigeration system using r22 as refrigerant. Layout of the r22 vapourcompression refrigeration system. The vaporcompression uses a circulating liquid refrigerant as the medium usually r4a which absorbs and removes heat from the space to be cooled and. Vapour compression cycle definite guide with video. It is simply a process of transporting heat from one place to another. The purpose of a refrigerator is the removal of heat, called the cooling load, from a lowtemperature medium.
The vapor compression refrigeration cycle, step by step. It is also used in domestic and commercial refrigerators, largescale warehouses for. Simple vapour compression refrigeration system consists of mainly four parts compressor, condenser, expansion valve and evaporator. The vaporcompression uses a circulating liquid refrigerant as the medium usually r4a which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere. The refrigeration effect is obtained in the cold region as heat is extracted by. Pdf design and construction of a vapour compression. Where in the compressionrefrigeration cycle is the refrigerant superheated. A low pressure, low temperature liquid is converted to vapor in the evaporator, thus absorbing heat from the refrigerated space and keeping that space cool. A vapour compression refrigeration system comprises of four components. It is a compression process, whose aim is to raise the refrigerant pressure, as it flows from an evaporator. Videos you watch may be added to the tvs watch history and. Modeling and investigation of refrigeration system performance with twophase fluid injection in a scroll compressor rui gu marquette university, 2016 vapor compression cycles are widely used in heating, refrigerating and airconditioning. Alka bani agrawal et al 8 worked on ecofriendly refrigerant as a substitute for cfc chlorofluorocarbon.
The vapour compression refrigeration system is an improved type of air refrigeration system using a liquid refrigerant as medium. Modeling and investigation of refrigeration system. If playback doesnt begin shortly, try restarting your device. Vaporcompression refrigeration wikimili, the free encyclopedia. In this system, the working substance is a refrigerant like nh 3, r11, r12.
The most common refrigeration system in use today involves the input of work from a compressor and uses the vapor compression cycle. Refrigeration cycles the vapor compression refrigeration cycle is a common method for transferring heat from a low temperature to a high temperature. A mix of vapor and liquid refrigerant entering into compressor suction may cause severe damage to the compressor. System description the layout of the system is shown in figure 1. The 6 main components of a refrigeration system bartlett blog. Oil in circulation in an vapor compression refrigeration system is known to cause a reduction in heat transfer coefficient and increase in pressure drop in heat exchangers and connecting lines 1,2,3, as well as reducing the oil level inside the compressor crankcase. The major components of a vaporcompression refrigeration system include the compressor, condenser, expansion device, and evaporator. Vaporcompression cycle refrigeration cycle vaporcompression cycle thermodynamic cycle of heat pumps. This is a pdf on the basic vapour compression cycle.
Dec 17, 2014 the refrigeration system makes a cold room work. Hrnjak, in 8th international conference on compressors and their systems, 20. In a vapour compression refrigeration system, the compressor plays a key role on the power consumption and its overall performance is a result of electrical, mechanical and thermodynamic efficiencies. The simple vapour compression refrigeration cycle is shown in fig. The four components of the refrigerator, namely, the condenser, evaporator, compressor and the capillary tube are designed separately. A refrigeration system is a combination of components and equipment connected in a sequential order to produce the refrigeration effect. The vapor compression cycle explained is the most common type of system used in refrigeration and air conditioning.
Design of two stage vapour compression refrigeration system. The vapor compression refrigeration cycle involves four components. The standard vapor compression refrigeration system is a condenser, evaporator, throttling valve, and a compressor. Refrigeration onboard ships marine engineering study materials. Well vapour absorption systemmachine vam is kind of refrigerating machine that uses the absorption pheno mena instead of compression process as being used in conventional machines. It also includes the process of maintaining and reducing the temperature of a body below the general temperature of its surroundings. 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.
The vaporcompression refrigeration cycle has four components. Components of vapour compression refrigeration cycle compressor the low pressure saturated vapour refrigerant from evaporator drawn into the compressor through suction valve. 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. The binary mixture in the ration of 64% and 36% of r290 and r600a found to be a retrofit or drop in substitute of r12 for use in the vapour compression refrigeration trainer. The vapor enters the refrigeration compressor at a low pressure and a low temperature and leaves the refrigeration compressor at a higher temperature and a higher pressure. Pdf constructal vapor compression refrigeration vcr systems. Learn about vapour compression refrigeration system. The basic components of any refrigeration system working on the vapour compression cycle, are the compressor, condenser, expansion valve, evaporator and the refrigerant fluid which is alternatively vapourized and liquefied during the refrigeration cycle. The 6 main components of a refrigeration system bartlett. The vapour compression system is the most commonly used method of refrigeration. Numerical simulation of vapour compression refrigeration. Air conditioning clinic refrigeration system components air one. May 10, 2017 learn about vapour compression refrigeration system. Gandhinagar institute of technology subject applied thermal and hydraulic engineering2140907 branch electrical topic refrigeration vapour compression refrigeration system 2.
A refrigeration cycle explained involves the cooling system process of refrigerators and air conditioners. The traditional vapor compression refrigeration design starts. To study various controls used in refrigeration and airconditioning system. In a vapour compression refrigeration system, refrigeration is obtained as the refrigerant evaporates at low temperatures.
Components of vapor compression refrigeration archives high. Vapour compression cycle refrigeration atmospheric. The figure shows the basic components of a vapor compression refrigeration system. This approach involves the operation of a vapor compression refrigeration cycle to induce heat to travel in a. All the components connected in a closed loop through piping that has heat transfer with the surrounding can be shown in figure 1. To get acquainted with a vaporcompression refrigeration system to be able to use pressureenthalpy diagrams and tables to determine the c. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of. The component of the modern day refrigeration system wh. The compressor hvac refrigeration in a typical hvac air conditioner or heat pump, there are four major components that make the process of refrigeration work. The objective of this study is to design and simulate a vapor compression refrigeration cycle for a microscale refrigerator. The compressor receives the refrigerant vapor from the evaporator coil and compresses the refrigerant vapor. It is also used in domestic and commercial refrigerators, largescale warehouses. Apr 25, 2019 components of vapor compression refrigeration system 1.
Vapor compression refrigeration system basic, working. Vapor compression refrigeration an overview sciencedirect. The input to the system is in the form of mechanical energy required to run the compressor the actual vapour compression cycle is based on evansperkins cycle, which is also called as reverse rankine cycle. Some basic refrigeration cycles are discussed here through different diagrams. Layout of the r22 vapour compression refrigeration system. Vapour compression cycle generally known as vcc is a refrigeration cycle. Vapour compression refrigeration system refrigeration. Components of vapor compression refrigeration system md rahmatuzzaman rana assistant professor, dept of fet, sust objectives to let students become familiar with the main components evaporator, compressor, condenser, valve of a refrigeration system to investigate the environmental effects of. Jun 20, 2016 well vapour absorption system machine vam is kind of refrigerating machine that uses the absorption pheno mena instead of compression process as being used in conventional machines.
The refrigerant absorbs heat from one place and releases it to another place. Components of vapor compression refrigeration system. The primary objective of the simulation is to determine the steadystate performance of the system given the design of all the components together with appropriate. The diagram at the left shows the components of a vapor compression refrigeration cycle.
Both a steadystate and a transient simulation will be considered. Mechanism and working of a vapour compression refrigeration. Vapour compression cycle free download as powerpoint presentation. In this cycle, the refrigerant is sealed condition in an airtight mechanism is compressed in a compressor which permits the transfer of heat energy. Vapourcompression refrigeration or vaporcompression refrigeration system vcrs, 1 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. What components are responsible for maintaining the high and low pressures in a compression refrigeration system. The above figure shows simple vapour compression refrigeration system. Refrigeration cycle is the basis of all refrigeration systems.
The refrigeration effect is obtained in the cold region as heat is extracted by the vaporization of refrigerant in the evaporator. From the end of the evaporator, through the compressor, up to the beginning of the condenser 5. Refrigerants for vapour compression refrigeration systems. A modified vapour compression refrigeration system consists of five components such as evaporator, liquidvapour heat exchanger, compressor, condenser and expansion device. 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. This case study demonstrates the modeling of a vapour compression refrigeration system using r22 as refrigerant. What is vaporcompression cycle refrigeration cycle. Comparing the absorption refrigeration cycle with the more familiar vapor compression refrigeration cycle is often an easy way to introduce it. Flownex was used to simulate a vapor compression refrigeration system using r22 as refrigerant. Refrigeration cycle animation vapor compression cycle explained. Mechanical refrigeration works by changing the the majority of heat is removed from the the majority of the works by removedchanging the absorbed heat is state of the refrigerant. Mechanical vapor compression refrigeration cycle has for basic parts 1. A slight performance improvement in the components of a vapor.
In this type of refrigerator, refrigerant undergoes phase changes. This video is all about mechanical vapour compression refrigeration cycle. These all four components run a simple vapour compression refrigeration system. A vapour compression refrigeration system is an improved type of air refrigeration system in which a suitable working substance, termed as refrigerant is used.
As shown in the figure the basic system consists of an evaporator, compressor, condenser and an expansion valve. A diagram of a typical vaporcompression refrigeration cycle can be superimposed on a pressureenthalpy ph chart to demonstrate the function of each component in. Refrigeration would not exist without these basic components. The diagram at the left shows the components of a vaporcompression refrigeration cycle. It is frequently used in large cold rooms like industrial chillers. Figure 1 is a flow diagram of a typical singlestage ammonia system, showing its.
Apr 02, 2016 vapour compression refrigeration system 1. The first component in the process is a compressor or the heart of an air conditioner or heat pump system. The vapourcompression system is the most commonly used method of refrigeration. A diagram of a typical vapor compression refrigeration cycle can be superimposed on a pressureenthalpy ph chart to demonstrate the function of each component in the system. Evaluation of vapour compression refrigeration system using. The vapor compression refrigeration system is the most widely used refrigeration system today for air conditioning of large public buildings, private residences, hotels, hospitals, theaters, restaurants, and a host of other services. Refrigeration may be defined as a process of removing heat from a substance and pumping it to the surroundings. Design of two stage vapour compression refrigeration. So refrigeration cycle should be known to understand the refrigeration system. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of rankine cycle is replaced by. Vapourcompression refrigeration or vaporcompression refrigeration system vcrs, in which. To study works principle of steam jet refrigeration system. Components of vapor compression refrigeration system md rahmatuzzaman rana assistant professor, dept of fet, sust objectives to let students become familiar with the main components evaporator, compressor, condenser, valve of a refrigeration system to investigate the environmental effects of refrigerants. The main components of a refrigeration system are the condenser, the.
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