To get acquainted with a vaporcompression refrigeration system to be able to use pressureenthalpy diagrams and tables to determine the c. A mix of vapor and liquid refrigerant entering into compressor suction may cause severe damage to the compressor. Layout of the r22 vapourcompression refrigeration system. Components of vapor compression refrigeration system 1. Vapour compression cycle definite guide with video. Figure 1 is a flow diagram of a typical singlestage ammonia system, showing its.
A refrigeration system is a combination of components and equipment connected in a sequential order to produce the refrigeration effect. To study the analysis of simple vapour compression cycle and explain the types of vapour compression cycle with ts and ph diagram. The purpose of a refrigerator is the removal of heat, called the cooling load, from a lowtemperature medium. 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.
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. Simple vapour compression refrigeration system consists of mainly four parts compressor, condenser, expansion valve and evaporator. Vaporcompression cycle refrigeration cycle vaporcompression cycle thermodynamic cycle of heat pumps. The vaporcompression uses a circulating liquid refrigerant as the medium usually r4a which absorbs and removes heat from the space to be cooled and. A vapour compression refrigeration system comprises of four components. This case study demonstrates the modeling of a vapour compression refrigeration system using r22 as refrigerant. This video is all about mechanical vapour compression refrigeration cycle. 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 four components of the refrigerator, namely, the condenser, evaporator, compressor and the capillary tube are designed separately. It is simply a process of transporting heat from one place to another. The refrigeration effect is obtained in the cold region as heat is extracted by.
Pdf design and construction of a vapour compression. If playback doesnt begin shortly, try restarting your device. It is a compression process, whose aim is to raise the refrigerant pressure, as it flows from an evaporator. Layout of the r22 vapour compression refrigeration system. In a vapour compression refrigeration system, refrigeration is obtained as the refrigerant evaporates at low temperatures. What components are responsible for maintaining the high and low pressures in a compression refrigeration system. A diagram of a typical vaporcompression refrigeration cycle can be superimposed on a pressureenthalpy ph chart to demonstrate the function of each component in. The figure shows the basic components of a vapor compression refrigeration system. Design of two stage vapour compression refrigeration system. The vapour compression system is the most commonly used method of refrigeration. The above figure shows the objectives of refrigerators and heat pumps. These all four components run a simple vapour compression refrigeration system. It is also used in domestic and commercial refrigerators, largescale warehouses for. 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.
It also includes the process of maintaining and reducing the temperature of a body below the general temperature of its surroundings. 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. Both a steadystate and a transient simulation will be considered. Vapour compression cycle refrigeration atmospheric. Vapour compression refrigeration system refrigeration. Pdf constructal vapor compression refrigeration vcr systems.
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. 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. 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. Vapor compression refrigeration an overview sciencedirect. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of. A modified vapour compression refrigeration system consists of five components such as evaporator, liquid vapour heat exchanger, compressor, condenser and expansion device. It is frequently used in large cold rooms like industrial chillers. Learn about vapour compression refrigeration system. Hrnjak, in 8th international conference on compressors and their systems, 20. The component of the modern day refrigeration system wh. The vapor compression refrigeration cycle, step by step araner. 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 6 main components of a refrigeration system bartlett blog.
To study works principle of steam jet refrigeration system. The standard vapor compression refrigeration system is a condenser, evaporator, throttling valve, and a compressor. The refrigeration effect is obtained in the cold region as heat is extracted by the vaporization of refrigerant in the evaporator. The refrigerant absorbs heat from one place and releases it to another place. This case study demonstrates the modeling of a compression vapour refrigeration system using r22 as refrigerant. Vapour compression cycle generally known as vcc is a refrigeration cycle. Apr 25, 2019 components of vapor compression refrigeration system 1. System description the layout of the system is shown in figure 1. 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. 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.
In simple vapour compression refrigeration system pressure ration up to specific limit can be achieved. 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. Numerical simulation of vapour compression refrigeration. Videos you watch may be added to the tvs watch history and. This approach involves the operation of a vapor compression refrigeration cycle to induce heat to travel in a. The simple vapour absorption system, as shown in fig. Comparing the absorption refrigeration cycle with the more familiar vapor compression refrigeration cycle is often an easy way to introduce it. Vaporcompression refrigeration wikimili, the free encyclopedia. Refrigeration cycles the vapor compression refrigeration cycle is a common method for transferring heat from a low temperature to a high temperature. The objective of this study is to design and simulate a vapor compression refrigeration cycle for a microscale refrigerator.
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. 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. Mechanism and working of a vapour compression refrigeration. The traditional vapor compression refrigeration design starts. 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. So refrigeration cycle should be known to understand the refrigeration system. Refrigeration cycle animation vapor compression cycle explained. The major components of a vaporcompression refrigeration system include the compressor, condenser, expansion device, and evaporator. Components of vapor compression refrigeration archives high. As shown in the figure the basic system consists of an evaporator, compressor, condenser and an expansion valve. The vapour compression refrigeration system is an improved type of air refrigeration system using a liquid refrigerant as medium. 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. In vapour compression refrigerating system, the work is supplied by the compressor.
The other components of the system are condenser, receiver, expansion value and evaporator as in the vapour compression system. A modified vapour compression refrigeration system consists of five components such as evaporator, liquidvapour heat exchanger, compressor, condenser and expansion device. A slight performance improvement in the components of a vapor. It is also used in domestic and commercial refrigerators, largescale warehouses. A refrigeration cycle explained involves the cooling system process of refrigerators and air conditioners. 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. Mechanical vapor compression refrigeration cycle has for basic parts 1. The vapor compression cycle explained is the most common type of system used in refrigeration and air conditioning. The vaporcompression refrigeration cycle has four components. 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. To study various controls used in refrigeration and airconditioning system. 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. Dec 17, 2014 the refrigeration system makes a cold room work.
Refrigerants for vapour compression refrigeration systems. What is vaporcompression cycle refrigeration cycle. Evaluation of vapour compression refrigeration system using. In this cycle, the refrigerant is sealed condition in an airtight mechanism is compressed in a compressor which permits the transfer of heat energy. The most common refrigeration system in use today involves the input of work from a compressor and uses the vapor compression cycle. Vapour compression refrigeration system refrigeration heat. Flownex was used to simulate a vapor compression refrigeration system using r22 as refrigerant. 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. All the components connected in a closed loop through piping that has heat transfer with the surrounding can be shown in figure 1. The compressor receives the refrigerant vapor from the evaporator coil and compresses the refrigerant vapor.
The vapourcompression system is the most commonly used method of refrigeration. Air conditioning clinic refrigeration system components air one. The first component in the process is a compressor or the heart of an air conditioner or heat pump system. The above figure shows simple vapour compression refrigeration system. The vapor compression refrigeration cycle, step by step. The vapor compression refrigeration cycle is virtually rankine cycle with the only difference that pump of rankine cycle is replaced by. The diagram at the left shows the components of a vaporcompression refrigeration cycle. Numerical simulation of vapour compression refrigeration system. Components of vapour compression refrigeration cycle compressor the low pressure saturated vapour refrigerant from evaporator drawn into the compressor through suction valve. Gandhinagar institute of technology subject applied thermal and hydraulic engineering2140907 branch electrical topic refrigeration vapour compression refrigeration system 2. The simple vapour compression refrigeration cycle is shown in fig. Components of vapor compression refrigeration system. Modeling and investigation of refrigeration system.
Refrigeration may be defined as a process of removing heat from a substance and pumping it to the surroundings. The 6 main components of a refrigeration system bartlett. Apr 02, 2016 vapour compression refrigeration system 1. The diagram at the left shows the components of a vapor compression refrigeration cycle. Vapor compression refrigeration system basic, working. Design of two stage vapour compression refrigeration. Refrigeration would not exist without these basic components. Where in the compressionrefrigeration cycle is the refrigerant superheated. From the end of the evaporator, through the compressor, up to the beginning of the condenser 5. 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. Refrigeration onboard ships marine engineering study materials. Alka bani agrawal et al 8 worked on ecofriendly refrigerant as a substitute for cfc chlorofluorocarbon. In this system, the working substance is a refrigerant like nh 3, r11, r12.
The main components of a refrigeration system are the condenser, the. A vapour compression refrigeration system is an improved type of air refrigeration system in which a suitable working substance, termed as refrigerant is used. Vapourcompression refrigeration or vaporcompression refrigeration system vcrs, in which. Some basic refrigeration cycles are discussed here through different diagrams. The vapor compression refrigeration cycle involves four components.
In this type of refrigerator, refrigerant undergoes phase changes. Vapour compression cycle free download as powerpoint presentation. 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. This is a pdf on the basic vapour compression cycle.
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