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
Premium Thermodynamics Heat HVAC
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
Premium Thermodynamics Refrigerator Heat
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
Premium Heat transfer
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
Premium Gas compressor Heat transfer Trigraph
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
Premium Gas compressor Temperature Gas
Born on April 18‚ 1772 in London‚ David Ricardo was the third of seventeen children in a Sephardic Jewish family that emigrated from The Netherlands to England right before his birth. When he was 14 he helped out his father by working at the London Stock Exchange where he learned about money and finance. At 21‚ Ricardo rejected his orthodox Jewish beliefs and married a Quakeress‚ Priscilla Anne Wilkinson‚ which did not make his father happy. After his family disinherited him from marrying outside
Premium
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
Premium
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
Premium Thermodynamics
INTRODUCTION Vapour absorption refrigeration system is one of the oldest methods of producing refrigerating effect. John Leslie in 1810 kept H2SO4 and water in two separate jars connected together. H2SO4 has very high affinity for water. It absorbs water vapour and this becomes the principle of removing the evaporated water vapour requiring no compressor or pump. H2SO4 is an absorbent in this system that has to be recycled by heating to get rid of the absorbed water vapour‚ for continuous
Premium Heat Heat transfer Thermodynamics
MM321 REFRIGERATION AND AIR CONDITIONING LAB 3 The Effects of Subcooling and Superheating Name: Ameniasi Naiqamu ID: S11051703 Date: 20/08/2013 Aim: To observe the effect that occurs in a refrigeration system when it undergoes Subcooling and Superheating. Introduction: Process Involved: Process 1-2 Isentropic Compression Process 2-3 Constant Pressure heat rejection Process 3-4 Isenthalpic process therefore; Process 4-1 Constant Pressure heat absorption
Premium Thermodynamics