Performance analysis of micro gas turbine driven through compression absorption refrigeration systems upendra kumar 1 and amit kumar corresponding author. However, the absorption refrigeration system is inflexible in the startstop operation, and this cannot fulfil the fluctuating demand of refrigeration. Power increase of gas turbines by inlet air precooling with. An absorption refrigerator changes the gas back into a liquid using a method that needs only heat, and has no moving parts other than the fluids. Design of ammonia water vapour absorption air conditioning. College of engineering ahmedabad380015, india abstract efficiency of diesel engine is about 3540 %. Bharath subramaniam assistant professor, mechanical engineering, srm university, kattankulathur, tamilnadu, india abstract the automobile air conditioning system utilizes the power obtained from the engine. During the experiments, dynamometer reading load, engine speed, fuel consumption and exhaust gas temperature were recorded. Absorption refrigeration systems absorption chillers. The paper explores from a theoretical stand point the possibility of utilization of the exhaust gases of a turbocharged diesel engine as an energy input to a vapor absorption refrigeration system for producing a cooling effect for the combination of pre and inter cooling of the charge air, which is a modified form of the intercooling systems. This installation consists of two 415 kw reciprocating engine generators and an absorption chiller that produces 160 tons of 25f refrigeration from the engine waste heat. A car airconditioning system based on an absorption.
The high degree of heat contained in the exhaust is ample enough to run a decent capacity absorption system and maintain. This type of refrigerator is also called threefluids absorption system. Ch 10, lesson e, page 1 introduction to gas refrigeration systems. Development of vapour absorption refrigerant system for cars. These refrigerators have been under intense scrutiny in recent years due to numerous reported. The analysis is also considered on the economic aspect. The picture on the left shows a chp system with an integrated ammoniawater absorption chiller. Hvac and refrigeration system bureau of energy efficiency 73 figure 4.
The heat required for running this type of air conditioning system can be obtained from that which is wasted into the atmosphere from an ic engine. The rate of refrigeration, the net power input, and the cop are to be determined. The absorption system or more commonly referred to as the cooling unit is a completely sealed system consisting of a maze of steel pipes usually located at the rear of the refrigerator box. Measured cop values of the unoptimized singlestage ammoniawater absorption cycle varied between 23 and 30%, but system modeling shows that this can be improved to values considerably over 30%.
A car airconditioning system based on an absorption refrigeration cycle using energy from exhaust gas of an internal combustion engine g vicatos j gryzagoridis s wang department of mechanical engineering, university of cape town. We have put together a simple comprehensive explanation of how a gas powered absorption refrigerator works. A breadboard prototype of an absorption system for truck refrigeration using heat from the exhaustgases was designed, built and tested. Absorption refrigeration system utilising engine exhaust gas. Air conditioning exhaust gas, exhaust gas utilization, design of air conditioning. Student 2assistant professor 1,2department of mechanical engineering 1,2l. Performance analysis of micro gas turbine driven through compressionabsorption refrigeration systems upendra kumar 1 and amit kumar corresponding author. The heating coil generator system of absorption refrigeration system has been replaced by plate frame type heat exchanger, there by utilizing the exhaust gases of the ic engine 9. In an air or gas expansion system, air or gas is compressed to a high pressure by mechanical energy. Hattem and dato 1983 2 described of an active solar cooling system, using a librh 2o absorption ma chine. Analysis of heat recovery from engine exhausts gas using. Pdf thermal performance of a diffusion absorption refrigeration.
Simultaneously the heat released to absorb the vapor is removed by air. Absorption refrigeration systems powered by solar energy increasingly attract research interests in the last years. Heat is also transferred in absorption refrigeration systems by compressing and expanding refrigerant. The aim is to design and to develop an air brake system based on exhaust gas is called fabrication of air brake system using engine exhaust gas. The vapor absorption refrigeration system comprises of all the processes in the vapor compression refrigeration system like compression, condensation, expansion and evaporation. Absorption refrigeration system using engine exhaust gas scribd. Dec 14, 2007 a novel cooling and power cycle has been proposed that combines a semiclosed cycle gas turbine called the high pressure regenerative turbine engine hprte with a vapor absorption refrigeration system vars. Effect of exhaust gas recirculation on performance and. This study demonstrated the feasibility of an absorption refrigeration system ars that is capable of utilising the engine exhaust gas of bulk gas. Further the vapor absorption cycle use non cfc refrigerant and thereby have.
As the result, the capacity of the exhaust gas meets requirement of the heat energy required for absorption refrigerator. The authors also demonstrated that performance of the absorption refrigeration system powered by exhaust gas energy is hampered by excessive heat transfer to the absorption system, which occurs for higher engine speeds. Egr works by recirculating a portion of an engine s exhaust gas back to the engine cylinders. A computer simulation model has been developed to predict the performance of solar absorption refrigeration system using different. This work presents an experimental study of ammoniawater absorption refrigeration system using the exhaust of an internal combustion engine as an energy source. It will not require a power input from the cars varies to a small engine as well. The generator is a spiral finandtube heat exchanger, while the condenser. We are going to wrap up this chapter with a brief discussion of gas refrigeration cycles.
The heating coil generator system of absorption refrigeration system has been replaced by plate frame type heat exchanger, there. Overview of vapor absorption chilling systems course content one of the oldest methods to mechanically cool a space is with absorption technology. An automotive engine was tested in a bench test dynamometer, with the absorption refrigeration system adapted to the exhaust pipe via a heat exchanger. The main difference between the two systems is the way the refrigerant is changed from a gas back into a liquid so that the cycle can repeat. Thermodynamic analysis of charge air cooling of diesel. This heat is enough to power an absorption refrigeration system to produce a refriga car airconditioning system based on an absorption refrigeration cycle using energy from exhaust gas of an internal combustion engine g vicatos j. Seminar on exhaust gas recirculation full report pptpdf. The increase of the librwater solution flow rate helps to increase cooling load but decrease cop. The concept is described and shows how it indicates a significant increase of gas turbine power output, depending on ambient conditions. The revival and consumption of waste heat not only conserves fossil fuel but also reduces the amount of waste heat.
There are various works available on the absorption cooling with exhaust gas heat of engine. Energy and exergy analysis of engine exhaust driven vapour. This work presents an experimental study of an ammoniawater absorption refrigeration system using the exhaust of an internal combustion engine as energy source. This paper describes an experimental application of engine exhaust gas driven absorption refrigeration system. Also from the environmental point of view this system is ecofriendly as it involves the use of ammonia as a refrigerant which is a natural gas and is not responsible for ozone layer depletion. Absorption refrigeration system using engine exhaust gas free download as word doc.
The results show that the system could work with an engine speed of 1200 1400rpm. Performance characteristics of an ammoniawater absorption. Design and fabrication of air conditioning using engine. The main aim of this project is to reduce the workloads of the engine drive to operate the air compressor, because here the compressor is not operated by the engine drive. Pdf a car airconditioning system based on an absorption.
During exhaust gas recirculation, the egr control valves were used to regulate the amount of exhaust allowed back into the combustion chamber. Combined heat and power technology fact sheet series. The maximum and minimum temperatures in the cycle, the cop, and the rate of refrigeration are to be determined. This study demonstrated the feasibility of an absorption refrigeration system ars that is capable of utilising the engine exhaust gas of bulk gas carriers as the heat source and generating cooling source either for reliquefaction of the boiloff. In this situation, exhaust gas temperature is increased considerably so that the refrigerant leaving the generator in the. The response of the refrigeration system to variations in chilled water inlet temperature, chilled water level in the evaporator drum, chilled water flow rate, and variable heat input are presented. Feb 11, 20 the basic objective of developing a vapour absorption refrigerant system for cars is to cool the space inside the car by utilizing waste heat and exhaust gases from engine. An aircooled absorption refrigeration system which has cooling capacity of 2 kw, and to integrate refrigeration system to engine, two generator models were designed and constructed for this study. Using heat energy from the tailend of gas turbine exhaust, an ammonia absorption refrigeration system can precool the inlet air to a temperature slightly above the freezing point of the air humidity. A car airconditioning system based on an absorption refrigeration. A car airconditioning system based on an absorption refrigeration cycle using energy from exhaust gas of an internal combustion engine. Design and analysis of ac system for automobile vehicle. Malwe the cop of ammoniawater system varies from 0.
The refrigeration cycle vars interacts with the power cycle hprte solely through heat transfer in the generator and the evaporator. The exhaust gas flow to the heat exchanger built on the generator was controlled manually using two control valves. Solar cooling and absorption cooling system has been witnessed a lot of develop ment and studies by researcher in the world and the almost available studies are. The same can be utilized for the operation of a triple effect absorption system which requires heat from a high temperature heat source. Absorption chillers are often exhaust fired using thermal energy recovered from. The system is designed and tested for various operating conditions using hot water as heat source. Automobile air condition system using exahust gas free download as powerpoint presentation. Instead the exhaust gas heat may be used to run the system. Read automotive exhaust gas flow control for an ammoniawater absorption refrigeration system, applied thermal engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Heat recovery, absorption refrigeration system, electrolux.
Mar 01, 2014 read automotive exhaust gas flow control for an ammoniawater absorption refrigeration system, applied thermal engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Analysis of heat recovery from engine exhausts gas using in. Compression system by using energy in the form of heat rather than mechanical work. The exhaust gas energy availability and the impact of the absorption refrigeration system on engine performance, exhaust emissions, and power economy are evaluated. By reason that absorption refrigeration technologies have the advantage that the peaks of requirements with the availability of the waste heat. Request pdf using engine exhaust gas as energy source for an absorption refrigeration system this work presents an experimental study of an. Automotive exhaust gas flow control for an ammoniawater.
A singleeffect absorption refrigeration system that uses librwater solution and engine exhaust gas is investigated. It also suggested that, with careful design, inserting the electrolux refrigerating system into the main engine exhaust system need not impair the performance of the vehicle propulsion unit. Theoretical and experimental investigation of an absorption. Saikhedkar 1,2department of mechanical, raipur institute of technology, raipur email. Schematic of a basic vapor compression refrigeration system it can be seen that the condenser has to be capable of rejecting the combined heat inputs of the evaporator and the compressor.
Ac system as based on ammonia absorption refrigeration cycle using exhaust waste heat of the engine. Chilled water is produced by the principle of refrigeration that liquid refrigerant, which evaporates at low temperature, absorbs heat from its surrounding environment while evaporating. Study of the possibility and potentiality of using the internal combustion engine exhaust gas as energy source for an absorption refrigeration system was carried out by manzela et al. My aim is to recover heat from exhaust gas and use it for absorption refrigeration system electrolux refrigeration system. Introduction the vapour absorption refrigeration system operates on heat. Study of vapor absorption system using waste heat in sugar industry, iosr journal of engineering,aug2012,22503021. Experimental investigation of heat recovery from engine. The high degree of waste heat from engine is ample enough to run a decent capacity absorption system and maintain optimal temperature conditions in the automobiles keywords compressor, condenser, cop, generator, refrigerant, vapour absorption. Absorption refrigeration system, cycle, unit, how does it.
Experimental investigation of heat recovery from engine exhaust gas used in electrolux refrigeration system devasi j. The air conditioner powered by the engine exhaust utilizes the energy of the exhaust gases. The generator is a spiral finandtube heat exchanger, while the condenser, evaporator, and absorber are shell and coil heat exchangers. Using engine exhaust gas as energy source for an absorption.
With the minimal requirement of heat energy electrolux vapor absorption system is best suitable to the project. The study shows the accessibility and chances of waste heat from internal combustion engine. Trigeneration or combined cooling, heat and power cchp, is the process by which some of the heat produced by a cogeneration plant is used to generate chilled water for air conditioning or refrigeration. Design of ammonia water vapour absorption air conditioning system for a car by waste heat recovery from engine exhaust gas 1dinesh chandrakar, 2n. Dec 21, 2017 learn the concept of gas cycle refrigeration system on which the aircraft refrigeration system works by easy to understand lecture. International journal of engineering research and general. Absorption refrigeration system for mobile applications. First lets understand what the name absorption refrigerator means. Power increase of gas turbines by inlet air precooling. Solar absorption refrigeration system using new working.
The study shows energy from the exhaust gas of an internal combustion engine is used to power an absorption refrigeration system to aircondition an ordinary. The compressor is replaced by the absorber and the generator in the absorption refrigeration system. Because the temperature of air or gas drops during expansion, a refrigeration effect is produced. This paper presents both the theoretical and experimental investigations of an absorption refrigeration and freezing predesalinationbased marine engine exhaust gas heat recovery system. In this study, thermodynamic analyses for different working fluid pairs are performed. In this paper, performance of the fabricated system is. The vapour absorption refrigeration system operates on heat. An absorption refrigerator is a refrigerator that uses a heat source e. An absorption chiller is linked to the combined heat and power chp to provide this functionality. The four types of refrigeration systems you need to know.
Testing and modeling of a semiclosed gas turbine cycle. Absorption refrigeration system using engine exhaust shekhar d. Combined heat and power technology fact sheet series avace mafacti ffice absorption chillers for chp. Performance of a refrigeration absorption cycle driven by. Seminar on exhaust gas recirculation full report ppt pdf download exhaust gas recirculation in internal combustion engines, exhaust gas recirculation egr is a nitrogen oxide nox emissions reduction technique used in petrolgasoline and diesel engines. Ch10, lesson e, page 1 introduction to gas refrigeration. The process was designed and simulated using the properties of the exhaust gas from the. The availability and possibility of waste heat from ic engine also describe law of exhaust gas energy. Experimental results proved that it is possible to drive a var system using the exhaust gases from a diesel engine. Absorption refrigeration system using engine exhaust gas as an. The cooling load and coefficient of performance cop. Pdf absorption refrigeration system using engine exhaust.
Absorption refrigeration system utilising engine exhaust gas for bulk. Mar 26, 2014 this work presents an experimental study of ammoniawater absorption refrigeration system using the exhaust of an internal combustion engine as an energy source. A vapor absorption chiller vam is a machine to produce chilled water using heat source such as steam, hot water, gas, and oil. Hence from the discussion, ammonia water vapor absorption system is suggested for the application. A breadboard prototype of an absorption system for truck refrigeration using heat from the exhaust gases was designed, built and tested. Though the cop of the system is less but since waste heat is given as. The use of impaired by the presence of auxiliary systems which draw from waste. A novel cooling and power cycle has been proposed that combines a semiclosed cycle gas turbine called the high pressure regenerative turbine engine hprte with a vapor absorption refrigeration system vars. But, no significant wok has been carried out by recovering and utilizing engine heat in refrigeration system of a vehicle. Pdf absorption refrigeration system using engine exhaust gas as. They did point the absorption refrigeration system powered by exhaust gas.
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