College of Engineering and Petroleum‚ Kuwait Uni6ersity‚ P.O. Box 5969‚ Safat 13060‚ Kuwait Received 4 April 2001; received in revised form 26 September 2001; accepted 27 September 2001 Abstract Steam jet ejectors are an essential part in refrigeration and air conditioning‚ desalination‚ petroleum refining‚ petrochemical and chemical industries. The ejectors form an integral part of distillation columns‚ condensers and other heat exchange processes. In this study‚ semi-empirical models are developed
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Basic Refrigeration Cycle Reversed Carnot Cycle Reversed Carnot Cycle Refrigeration Cycle Dr. M. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000‚ Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/ ME 415: Refrigeration & Building Mechanical Systems e720 Coefficient of Performance‚ COP = TL QL = Wnet TH − TL ME 415 (2011) 2 / 14 c Dr. M. Zahurul Haq (BUET) Refrigeration Cycle Reversed
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IN REFRIGERATION & AIR CONDITIONING Rohit Wani1 Veermata Jijabai Technological Institute‚ Mumbai-400 019 rohit.20047@gmail.com‚ Ph.No – 9172339408. Sumit Pawar2 Veermata Jijabai Technological Institute‚ Mumbai-400 019 sumit12131@rediffmail.com‚ Ph.No – 8055827981. ABSTRACT: A state-of-the-art review is presented of the different technologies that are available to deliver refrigeration. The demand and supply of refrigeration systems
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Vapour-Compression Refrigeration Experiment Thermodynamics Date of experiment: 26 June 2012 Group D2: Introduction The laboratory session for refrigeration system was performed in order to investigate the main concepts of the vapour-compression refrigeration cycle. Simple refrigeration system studied in the laboratory is a prototype for a variety of engineering applications utilized in industrial‚ domestic and scientific purposes. The detailed goals include the study of how the refrigeration process is
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The Refrigeration Process Refrigeration has probably been around longer than you think. In 1823‚ Michael Faraday discovered that certain gases under constant pressure will condense when they cool. In 1875‚ Raoul Picet used sulfur dioxide as a refrigerant and in 1931 Refrigerant R-12 was developed by Thomas Midgley and C. F. Kettering. The Kelvinator refrigeration unit‚ ice cream units‚ and Semi-hermetic compressors were introduced at the beginning of the 20th century. In this
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MAGNETIC MAGNETIC REFRIGERATION a fruitful approach to reduce environmental pollution... ABSTRACT : The objective of this effort is to determine the feasibility of designing‚ fabricating and testing a sensor cooler‚ which uses solid materials as the refrigerant. These materials demonstrate the unique property known as the magneto caloric effect‚ which means that they increase and decrease in temperature when magnetized/demagnetized. This effect has been observed for many years and was used for cooling
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THE REFRIGERATION SYSTEM AN INTRODUCTION TO REFRIGERATION APPLICATION NOTE BASIC REFRIGERATION PRINCIPLES If you were to place a hot cup of coffee on a table and leave it for a while‚ the heat in the coffee would be transferred to the materials in contact with the coffee‚ i.e. the cup‚ the table and the surrounding air. As the heat is transferred‚ the coffee in time cools. Using the same principle‚ refrigeration works by removing heat from a product and transferring that heat to the outside air
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Vapour Absorption Refrigeration System V.D.Patel*a‚ A.J.Chaudhari*‚ R.D.Jilte* (Department of Mechanical Engineering)* Vidyavardhini’s College of Engineering and Technology‚ Vasai (W)‚ Dist: Thane‚ Pin: 401 202‚ (M.S.)‚ INDIA. e-maila: v_patel@rediffmail.com ABSTRACT The vapour absorption system uses heat energy‚ instead of mechanical energy as in vapour compression system‚ in order to change the condition of the refrigerant required for the operation of the refrigeration cycle. In this system
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Electrical Equipment/ Refrigeration & AC Refrigeration & AC Refrigeration & Air Conditioning 1 Training Agenda: Refrigeration & Air Conditioning Refrigeration & AC Introduction Type of refrigeration Assessment of refrigeration and AC Energy efficiency opportunities 2 Introduction Refrigeration & AC How does it work? High Temperature Reservoir Heat Rejected R Work Input Heat Absorbed Low Temperature Reservoir 3 Introduction How does it work? Refrigeration & AC Thermal energy moves
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REFRIGERATION AND AIR CONDITIONING 1. DEFINATION OF REFRIGERATION Refrigeration is defined as “ the branch of science that deal with the process of reducing and maintaining the temperature of confined space or material below the temperature of surrounding” the system maintain at lower temperature is known as refrigerated system and equipment used to obtain this is known as refrigerator. The cooling effect produced by this equipment is the refrigerating effect. 2. PRINCIPLE OF REFRIGERATION
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