Week 9. Refrigeration Cycles I. GENESYS Laboratory
|
|
- Leon Booker
- 6 years ago
- Views:
Transcription
1 Week 9. Refrigeration Cycles I
2 Objectives 1. Introduce the concepts of refrigerators and heat pumps and the measure of their performance. 2. Analyze the ideal vapor-compression refrigeration cycle. 3. Analyze the actual vapor-compression refrigeration cycle. 4. Review the factors involved in selecting the right refrigerant for an application. 5. Discuss the operation of refrigeration and heat pump systems. 6. Evaluate the performance of innovative vapor-compression refrigeration system. 7. Analyze gas refrigeration systems. 8. Introduce the concepts of absorption-refrigeration systems. 9. Review the concepts of thermoelectric power generation and refrigeration
3 Refrigerators And Heat Pumps The transfer of heat from a low-temperature region to a high-temperature one The performance of refrigerators and heat pumps is expressed in terms of the coefficient of performance () R HP HP Desired output Cooling effect Q Required input Work input W Desired output Heating effect Q = Required input Work input W R 1 L net,in H net,in
4 The Reversed Carnot Cycle Carnot Refrigerator 1 R, Carnot T H T L Carnot Heat Pump HP, Carnot 1 1 T 1 L T H The reversed Carnot cycle is not a suitable model for refrigeration cycles Process 1 2, 3 4 : achievable Process 2 3 the compression of a liquid-vapor mixture Process 4 1 the expansion of high- Moisture-content refrigerant in a turbine Carnot refrigerator and T-s diagram of the reversed Carnot cycle
5 The Ideal Vapor-Compression Refrigeration Cycle Many of the impracticalities associated with the reversed Carnot cycle can be eliminated by vaporizing the refrigerant completely before it is compressed and by replacing the turbine with a throttling device, such as an expansion valve or capillary Four processes: 1-2 Isentropic compression in a compressor 2-3 Constant-pressure heat rejection in a condenser 3-4 Throttling in an expansion device 4-1 Constant-pressure heat absorption in an evaporator T-s diagram for the ideal vapor-compression refrigeration cycle
6 The Ideal Vapor-Compression Refrigeration Cycle P-h diagram -Process 3-4 is isenthalpic process (expansion valve) -Processes 2-3 and 4-1: Q is determined as deviation between h s -Process 1-2: W is determined as h 2 -h 1 The s of refrigerators and heat pumps operating on the vapor-compression refrigeration cycle can be expressed as R HP q w L net,in q w H net,in h1 h4 h h h2 h3 h h 1 The P-h diagram of an ideal vapor-compression refrigeration cycle
7 Ex 1) The Ideal Vapor-Compression Refrigeration Cycle
8 Ex 1-1) The Ideal Vapor-Compression Refrigeration Cycle Consider an ideal refrigeration cycle that uses R-134a as the working fluid. The temperature of the refrigerant in the evaporator is -20 o C, and in the condenser exit, it is 40 o C. The refrigerant is circulated at the rate of 0.03 kg/s. Determine the and the capacity of the plant in rate of refrigeration.
9 Actual Vapor-Compression Refrigeration Cycle An actual vapor-compression refrigeration cycle differs from the ideal one owing to the irreversibilities (e.g. fluid friction causing pressure drops and heat transfer to or from the surroundings) that occur in various components. The compression process in the actual cycle is not isentropic The entropy of the refrigerant may increase (process 1-2) or decrease (process 1-2 ) due to cooling effect The refrigerant is subcooled somewhat before it enters the throttling valve and superheated before it enters the compressor
10 Ex 2) The Actual Vapor-Compression Refrigeration Cycle
11 Ex 2-1) The Actual Vapor-Compression Refrigeration Cycle A refrigeration cycle utilizes R-134a as the working fluid. The following are the properties at various points of the cycle designated in Figure. P 1 =125 kpa, T 1 =-10 o C P 2 =1200 kpa, T 2 =100 o C P 3 =1190 kpa, T 3 =80 o C P 4 =1160 kpa, T 4 =45 o C P 5 =1150 kpa, T 5 =40 o C P 6 =P 7 =140 kpa, x6=x7 P 8 =130 kpa, T 8 =-20 o C The heat transfer from R-134a during the compression process is 4 kj/kg. Determine the of this cycle.
12 Innovative Vapor-Compression Refrigeration Systems The ordinary vapor-compression refrigeration systems are simple, inexpensive, reliable, and practically maintenance-free However, for large industrial applications efficiency, the major concern is not simplicity. Modifications and refinements are necessary - Cascade Refrigeration Systems - Multistage Compression Refrigeration Systems - Multipurpose Refrigeration Systems with a Single Compressor - Liquefaction of Gases
13 Cascade Refrigeration Systems Need to operate a large temperature range -Way of dealing with a large pressure range in the cycle and a poor performance for reciprocating compressor Solution - Two or more refrigeration cycles that operate in series -Refrigerants in both cycles can be the same or different, but a certain refrigerants with more desirable characteristics can be used on each cycle Result -The compressor work decreases and the amount of heat absorbed from the refrige- rated space increases - The ratio of mass flow rates is m A h m Ah5 h8 m B h2 h3 m h B 2 5 h h 3 8 R,cascade Q W L net,in m A m B h1 h4 h h m h h 6 5 B 2 1
Chapter 11. Refrigeration Cycles. Study Guide in PowerPoint
Chapter 11 Refrigeration Cycles Study Guide in PowerPoint to accompany Thermodynamics: An Engineering Approach, 7th edition by Yunus A. Çengel and Michael A. Boles The vapor compression refrigeration cycle
More informationRefrigerator and Heat Pump Objectives
10 CHAPTER Refrigeration Cycles 10-1 Refrigerator and Heat Pump Objectives The objective of a refrigerator is to remove heat (Q L ) from the cold medium; the objective of a heat pump is to supply heat
More informationThermodynamics II Chapter 5 Refrigeration
Thermodynamics II Chapter 5 Refrigeration Mohsin Mohd Sies Fakulti Kejuruteraan Mekanikal, Universiti Teknologi Malaysia Objectives Introduce the concepts of refrigerators and heat pumps and the measure
More informationRefrigeration Cycles MOHAMMAD FAISAL HAIDER. Bangladesh University of Engineering and Technology
Refrigeration Cycles MOHAMMAD FAISAL HAIDER LECTURER Department of Mechanical Engineering Department of Mechanical Engineering Bangladesh University of Engineering and Technology Objectives Introduce the
More informationChapter 11 REFRIGERATION CYCLES. Department of Mechanical Engineering
Chapter 11 REFRIGERATION CYCLES Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University it Objectives Introduce the concepts of refrigerators and heat pumps and the measure of their performance.
More informationChapter 11 REFRIGERATION CYCLES
Thermodynamics: An Engineering Approach, 6 th Edition Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2008 Chapter 11 REFRIGERATION CYCLES Wan Rosli Wan Sulaiman Copyright The McGraw-Hill Companies, Inc.
More informationEngineering Thermodynamics. Chapter 7
Chapter 7 Vapor-Power Cycle 4.1 Introduction Steam power plants are the major sources of power generation. They operate essentially on the principle that steam generated in the boiler passes through steam
More informationChapter 11 REFRIGERATION CYCLES
Thermodynamics: An Engineering Approach Seventh Edition in SI Units Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2011 Chapter 11 REFRIGERATION CYCLES Mehmet Kanoglu University of Gaziantep Copyright
More informationChapter 9. Refrigeration and Liquefaction
Chapter 9 Refrigeration and Liquefaction Refrigeration is best known for its use in the air conditioning of buildings and in the treatment, transportation, and preservation of foods and beverages. It also
More informationENSC 388. Assignment #6
ENSC 388 Assignment #6 Assignment date: Wednesday Oct. 21, 2009 Due date: Wednesday Oct. 28, 2009 Problem 1 A turbine operating at steady state receives air at a pressure of 3.0 and a temperature of 390.
More informationChapter 10. Refrigeration and Heat Pump Systems
Chapter 10 Refrigeration and Heat Pump Systems Learning Outcomes Demonstrate understanding of basic vaporcompression refrigeration and heat pump systems. Develop and analyze thermodynamic models of vapor-compression
More informationThermodynamic Calculations of Two-Stage Vapor Compression Refrigeration Cycle with Flash Chamber and Separate Vapor Mixing Intercooler
Thermodynamic Calculations of Two-Stage Vapor Compression Refrigeration Cycle with Flash Chamber and Separate Vapor Mixing Intercooler Author: Volodymyr Voloshchuk Vl.volodya@gmail.com Introduction In
More informationThermodynamics I. Refrigeration and Heat Pump Cycles
Thermodynamics I Refrigeration and Heat Pump Cycles Dr.-Eng. Zayed Al-Hamamre 1 Content Introduction The Reversed Carnot Cycle The Ideal Compression Refrigeration Systems Deviation from the ICRS Selection
More informationChapter 10 VAPOR AND COMBINED POWER CYCLES
Thermodynamics: An Engineering Approach Seventh Edition Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2011 Chapter 10 VAPOR AND COMBINED POWER CYCLES Copyright The McGraw-Hill Companies, Inc. Permission
More informationChapter 8. Production of Power from Heat
Chapter 8 Production of Power from Heat 8.1 THE STEAM POWER PLANT The Carnot-engine cycle, described in Sec. 5.2, operates reversibly and consists of two isothermal steps connected by two adiabatic steps.
More informationFig.: macroscopic kinetic energy is an organized form of energy and is much more useful
Harnessing Energy Fig.: macroscopic kinetic energy is an organized form of energy and is much more useful Vapor Power Cycle The vast majority of electrical generating plants are variations of vapor power
More informationRefrigerants Type Expensive Coefficient of Performance Toxic
Chapter 11: Refrigeration Cycles 11.5. Selecting the Right Refrigerants When designing a refrigeration system, there are several refrigerants from which to choose, such as chlorofluorocarbons (CFCs), ammonia,
More informationc Dr. Md. Zahurul Haq (BUET) Refrigeration Cycles ME 6101 (2013) 2 / 25 T270 COP R = Q L
Refrigeration Cycles Dr. Md. 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/
More informationRefrigeration Cycles. Refrigerators, Air-conditioners & Heat Pumps. Refrigeration Capacity/Performance. Dr. Md. Zahurul Haq
Refrigeration Cycles Dr. Md. 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/
More informationT270 COP R = Q L. c Dr. Md. Zahurul Haq (BUET) Refrigeration Cycles ME 6101 (2017) 2 / 23 T354
Refrigerators, Air-conditioners & Heat Pumps Refrigeration Cycles Dr. Md. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000,
More informationWeek 13 Chapter 10 Vapor & Combined Power Cycles
MECH341: Thermodynamics of Engineering System Week 13 Chapter 10 Vapor & Combined Power Cycles The Carnot vapor cycle The Carnot cycle is the most efficient cycle operating between two specified temperature
More information(Refer Slide Time: 00:00:40 min)
Refrigeration and Air Conditioning Prof. M. Ramgopal Department of Mechanical Engineering Indian Institute of Technology, Kharagpur Lecture No. # 10 Vapour Compression Refrigeration Systems (Refer Slide
More informationHomework Chapter2. Homework Chapter3
Homework Chapter2 2/1 A storage tank holds methane at 120 K, with a quality of 25 %, and it warms up by 5 C per hour due to a failure in the refrigeration system. How long time will it take before the
More informationThermodynamics: Homework A Set 7 Jennifer West (2004)
Thermodynamics: Homework A Set 7 Jennifer West (2004) Problem 1 Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the boiler at a pressure of 18 MPa, and saturated vapor
More informationChapter 10 Lyes KADEM [Thermodynamics II] 2007
Refrigeration Cycles The objective of refrigeration cycles is to transfer the heat from a low temperature region to a high temperature region. - if the objective of the cycle is to decrease the lowest
More informationPLEASE READ AND FOLLOW THESE INSTRUCTIONS
ME 300 Final Examination May 2, 2005 161 ME or 261 ME Name: Thermo No. Section: (Please circle) 8:30 a.m. 11:30 a.m. 2:30 p.m. PLEASE READ AND FOLLOW THESE INSTRUCTIONS 1. Put your name on each page of
More informationLECTURE-17. Multi-Stage Vapour Compression Refrigeration. 1. Introduction
Lecturer: -Dr. Esam Mejbil Abid Subject: Air Conditioning and Refrigeration Year: Fourth B.Sc. Babylon University College of Engineering Department of Mechanical Engineering LECTURE-17 Multi-Stage Vapour
More informationBasically 1 TR would mean the amt of heat removed = 211KJ/min from storage space.
#1 Refrigeration is the process of MAINTAINING a lower temperature as compared to the surroundings. Be it continuous generation of work from heat or maintaining a lower temp, we have to conduct these operations
More informationwe will examine only the vapour compression systems transfers to the Carnot cycle can serve as the initial model of the ideal refrigeration cycle.
Refrigeration Cycle Reading Problems 10-1 10-5, 10-7, 10-9 10-11, 10-14, 10-39 Definitions a refrigeration system removes thermal energy from a low-temperature region and transfers heat to a high-temperature
More informationNatural gas liquefaction cycles
Natural gas liquefaction cycles Constantinos Hadjistassou, PhD Assistant Professor Programme in Oil & Gas (Energy) Engineering University of Nicosia Web: www.carbonlab.eu Nov., 2015 Overview Liquefaction
More informationRefrigeration and Air Conditioning
Refrigeration and Air Conditioning 1. Pick up the wrong statement. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical
More informationCH2351 Chemical Engineering Thermodynamics II Unit V Refrigeration. Dr. M. Subramanian
CH2351 Chemical Engineering Thermodynamics II Unit V www.msubbu.in Refrigeration www.msubbu.in Dr. M. Subramanian Associate Professor Department of Chemical Engineering Sri Sivasubramaniya Nadar College
More informationME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3
ME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3 1. OBJECTIVE The objective of this experiment is to observe four basic psychrometric processes
More informationSteam Power Cycles Part II
Steam Power Cycles Part II Regenerative Cycles - Open and Closed Feedwater Heaters One approach to increasing the efficiency of steam power cycle is by extracting some of the steam from various stages
More informationINSTITUTE OF AERONAUTICAL ENGINEERING
1 P a g e INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad -00 043 MECHANICAL ENGINEERING QUESTION BANK Name : REFRIGERATION AND AIR CONDITIONING Code : A60334 Class : III B. Tech
More informationRAC. Unit 1. Previous year Questions
RAC Unit 1 Previous year Questions 1.What is the basic difference between open and closed Air refrigeration cycles? Describe a Bellcoleman or Reversed Joule air refrigeration cycle with the help of a neat
More informationPaper No. : 04 Paper Title : Unit Operations in Food processing Module 11 : Principles of Refrigeration
Paper No. : 04 Paper Title : Unit Operations in Food processing Module 11 : Principles of Refrigeration 11.1 Introduction Preservation of foods is a vital processing step in food processing. There are
More informationThe Refrigeration Cycle
Job Sheet 4 The Refrigeration Cycle OBJECTIVES In this job sheet, you will plot the refrigeration cycle on a pressure-enthalpy diagram using pressures and temperatures measured on your training system.
More informationThe Refrigeration Cycle
Job Sheet 4 The Refrigeration Cycle OBJECTIVES In this job sheet, you will plot the refrigeration cycle on a pressure-enthalpy diagram using pressures and temperatures measured on your training system.
More informationVapour Compression Refrigeration Systems
Vapour Compression Refrigeration Systems Nagendra M CBM Engineer, Hindusthan Zink.Ltd The specific objectives of the lesson: This lesson examines the most usually utilized refrigeration system, i.e. Vapour
More informationWORK STUDY ON LOW TEMPERATURE (CASCADE) REFRIGERATION SYSTEM
WORK STUDY ON LOW TEMPERATURE (CASCADE) REFRIGERATION SYSTEM Sachin Kumar 1, Vicky Ranga 2 1Assistant Professor, Department of Mechanical Engineering, Jagan Nath University Jhajjar, Haryana, India. 2Scholar.
More informationPerformance analysis of a vapour compression refrigeration system with a diffuser for theeco-friendly refrigerants R-134a, R-600a and R-152a
International Journal of Research in Engineering and Science (IJRES) ISSN (Online): 2320-9364, ISSN (Print): 2320-9356 Volume 4 Issue 6 ǁ June. 2016 ǁ PP. 52-57 Performance analysis of a vapour compression
More informationPRESSURE-ENTHALPY CHARTS AND THEIR USE By: Dr. Ralph C. Downing E.I. du Pont de Nemours & Co., Inc. Freon Products Division
INTRODUCTION PRESSURE-ENTHALPY CHARTS AND THEIR USE The refrigerant in a refrigeration system, regardless of type, is present in two different states. It is present as liquid and as vapor (or gas). During
More informationR07. Answer any FIVE Questions All Questions carry equal marks *****
Set No: 1 III B.Tech. II Semester Supplementary Examinations, April/May 2013 REFRIGERATION AND AIR CONDITIONING (Mechanical Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions
More informationHVAC Fundamentals & Refrigeration Cycle
HVAC Fundamentals & Refrigeration Cycle Change of State of Water & the Refrigeration Cycle Change of State Water The Basic Refrigeration Cycle Types of DX Systems The Chilled water System The Cooling Tower
More information(ME-225) HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM
(ME-225) HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM MUHAMMAD UMER SOHAIL PhD, AEROSPACE SCHOLOR (INSTITUTE OF SPACE TECHNOLOGY) MS POWER MECHANICAL (MUST) MBA (COL) EXECUTIVE (SAARC AIOU) BSC MECHANICAL
More informationDhulapally, Secunderabad Subject: REFRIGERATION AND AIR CONDITIONING QUESTION BANK
St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad-500 014 Subject: REFRIGERATION AND AIR CONDITIONING Class : ECE III 1 Define Unit of refrigeration. 2 Define C.O.P. QUESTION BANK 3 What is the
More informationISSN Vol.08,Issue.21, November-2016, Pages:
ISSN 2348 2370 Vol.08,Issue.21, November-2016, Pages:4164-4170 www.ijatir.org Thermal Analysis of Vapour Compression Cycle for Different Refrigerants ALI MOHAMMED ABDOULHA MASSOUD 1, DR. MOHAMMAD TARIQ
More informationREFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis
REFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis Technical Development Program Technical Development Programs (TDP) are modules of technical training on HVAC theory, system
More informationPressure Enthalpy Charts
Pressure Enthalpy Charts What is a p-h Diagram? A p-h diagram is a diagram with a vertical axis of absolute pressure and a horizontal axis of specific enthalpy. "Enthalpy is the amount of energy in a substance
More informationREFRIGERATION AND AIR CONDITIONING
REFRIGERATION AND AIR CONDITIONING About the Author Late (Dr.) Ramesh Chandra Arora served as Professor of Mechanical Engineering at Indian Institute of Technology Kharagpur from 1987 to 2005. He received
More informationME 410 MECHA ICAL E GI EERI G SYSTEMS LABORATORY
ME 410 MECHA ICAL E GI EERI G SYSTEMS LABORATORY MASS & E ERGY BALA CES I PSYCHROMETRIC PROCESSES EXPERIME T 3 1. OBJECTIVE The object of this experiment is to observe four basic psychrometric processes
More informationModeling And Testing Of R23/R134a Mixed Refrigerant System With Water Cooled Separator For Low Temperature Refrigeration
Marquette University e-publications@marquette Master's Theses (2009 -) Dissertations, Theses, and Professional Projects Modeling And Testing Of R23/R134a Mixed Refrigerant System With Water Cooled Separator
More informationRefrigeration Systems
Refrigeration Systems COP COP = coefficient of performance Air conditioners, refrigerators: COP=QL/Wnet Heat pumps: COP=QH/Wnet Energy balance: Wnet+QL=QH From Cengel, Thermodynamics: An Engineering Approach,
More informations. Properties for R134a are as follows : Saturated R-134a Superheated R-134a
CHAPTER 9 REFRIGERATION & AIR-CONDITIONING YEAR 2012 ONE MARK Common Data For Q. 1 and Q.2 A refrigerator operates between 120 kpa and 800 kpa in an ideal vapour compression cycle with R-134a as the refrigerant.
More informationS.A. Klein and G.F. Nellis Cambridge University Press, 2011 = 90 F. compressor. condenser. 5 evaporator 1. evap
9.A-1 Dedicated subcooling is a novel modification for frozen food refrigeration in supermarkets. With the dedicated subcooling modification, liquid refrigerant leaving the condenser is further cooled
More information3. (a) Explain the working of a rotary screw compressor. [10] (b) How the capacity control is achieved in refrigerant compressor?
Code No: RR410305 Set No. 1 IV B.Tech I Semester Regular Examinations, November 2006 REFRIGERATION & AIR CONDITIONING (Mechanical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All
More informationUNIT - 3 Refrigeration and Air - Conditioning
UNIT - 3 Refrigeration and Air - Conditioning Science of providing and maintaining temperatures below that of surroundings I n t r o d u c t i o n t o R e f r i g e r a t i o n The term refrigeration may
More informationSIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road AUTONOMOUS QUESTION BANK (DESCRIPTIVE) UNIT I
SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 AUTONOMOUS QUESTION BANK (DESCRIPTIVE) Subject with Code : Refrigeration and Air Conditioning (16ME8806) Course & Branch:
More informationThermodynamic Analysis of Cascade Refrigeration System Using R12-R13, R290-R23 and R404A-R23
Thermodynamic Analysis of Cascade Refrigeration System Using R12-R13, R290-R23 and R404A-R23 A. D. Parekh, P. R. Tailor Abstract The Montreal protocol and Kyoto protocol underlined the need of substitution
More informationPerformance Analysis of Solar Assisted Cascade Refrigeration System of Cold Storage System
Performance Analysis of Solar Assisted Cascade Refrigeration System of Cold Storage System Dr. Nimai Mukhopadhyay 1, ER. Someshwar Chowdhury 2 Assistant Professor, Dept. of M. E., Jalpaiguri Government
More informationSAMPLE STUDY MATERIAL
R.A.C.-ME GAE, IES, PSU SAMPLE SUDY MAERIAL Mechanical Engineering ME Postal Correspondence Course Refrigeration & Air Conditioning GAE, IES & PSUs R.A.C.-ME GAE, IES, PSU 2 C O N E N. INRODUCION & BASIC
More informationCompendium DES July 2016, CARN
Compendium DES July 2016, CARN 1 Contents Contents... 2 1. Energy balance... 4 Using Energy Balance for analyzing energy systems... 4 Energy Balance definition... 4 Steady state, steady flow... 4 Methodology...
More informationEnhancement of COP by Using Spiral and Microchannel Condenser instead of conventional Condenser of VCR System
Enhancement of COP by Using Spiral and Microchannel instead of conventional of VCR System 1 P.G. Lohote, 2 Dr.K.P. Kolhe. 1 P.G. Student, 2 Professor. 1,2 Department of Mechanical Engineering, JSPM s,
More informationR10. IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec REFRIGERATION & AIR-CONDITIONING (Mechanical Engineering)
Set No. 1 IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec - 2014 REFRIGERATION & AIR-CONDITIONING (Mechanical Engineering) Time: 3 hours Max. Marks: 75 Answer any FIVE Questions All Questions
More informationRefrigeration and Air- Conditioning
S K Mondal s Refrigeration and Air- Conditioning GATE, IES & IAS 20 Years Question Answers Contents Chapter 1: Heat Pump and Refrigeration Cycles and Systems Chapter - 2 : Vapour Compression System Chapter
More informationCarnot. 2. (a) Discuss the advantages of the dense air refrigeration system over an open air refrigeration system?
UNIT-1 1. What is the difference between a refrigerator and heat pump? Derive an expression for the cop for both if they are running on reversed Carnot cycle? The above figure shows the objectives of refrigerators
More informationOPEN SOURCE Project OASIS MACHINE December 27, 2011 Subject ENERGY & WATER PRODUCTION Page 1 of 7 OASIS MACHINE
Subject ENERGY & WATER PRODUCTION Page 1 of 7 OASIS MACHINE The following 1 st concept sketch was produced as a means of defining this device as we prepare for funding applications. Also to communicate
More informationDesign of a Low capacity Evaporator of a Refrigeration Unit
Session 3666 Design of a Low capacity Evaporator of a Refrigeration Unit Alireza Mohammadzadeh Padnos School of Engineering Grand Valley State University Overview This project has been assigned to students
More informationInternational Journal Of Core Engineering & Management (IJCEM) Volume 2, Issue 9, December 2015
EXERGY ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION CYCLE- A REVIEW Pradhumn Tiwari 1, Prakash Pandey 2 1 Pradhumn Tiwari Research Scholar, Maulana Azad Nation Institute of Technology, Bhopal, M.P, India
More informationCombination unit to support instruction in Thermodunamics, Fluid Mechanics, and Heat Transfer
Paper ID #6647 Combination unit to support instruction in Thermodunamics, Fluid Mechanics, and Heat Transfer Dr. Lin Lin, University of Southern Maine Dr. Lin joined Department of Engineering at University
More informationHomework #4 (group) Tuesday, 27 by 4:00 pm 5290 exercises (individual) Tuesday, 27 by 4:00 pm extra credit (individual) Tuesday, 27 by 4:00 pm
Homework #4 (group) Tuesday, 27 by 4:00 pm 5290 exercises (individual) Tuesday, 27 by 4:00 pm extra credit (individual) Tuesday, 27 by 4:00 pm Readings for this homework assignment and upcoming lectures
More informationAn Experiment of Heat Exchanger Produces Hot Water Using Waste Heat Recovery from Air Conditioning
ISBN 978-93-84468-94-1 International Conference on Education, Business and Management (ICEBM-2017) Bali (Indonesia) Jan. 8-9, 2017 An Experiment of Heat Exchanger Produces Hot Water Using Waste Heat Recovery
More informationNumerical Study on Improvement of COP of Vapour Compression Refrigeration System
Numerical Study on Improvement of COP of Vapour Compression Refrigeration System Sanath Kumar K H 1, Arun Kumara K S 2, Nissar Ahmed 3 Assistant Professor, Department of Mechanical Engineering, VVIT, Bangalore,
More informationSubscripts 1-4 States of the given system Comp Compressor Cond Condenser E Evaporator vol Volumetric G Gas L Liquid
Simulation Analysis of Compression Refrigeration Cycle with Different Refrigerants P.Thangavel, Dr.P.Somasundaram, T.Sivakumar, C.Selva Kumar, G.Vetriselvan Abstract --- In this analysis, the performance
More informationPerformance investigation of Air-conditioning system using ejector as expansion device
International Journal of Current Engineering and Technology E-ISSN 2277 416, P-ISSN 2347 161 216 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Performance
More informationRole of Nano-technology for improving of thermal performances of vapour compression refrigeration system (VCRS): An Overview
International Journal of Research in Engineering and Innovation Vol-2, Issue-1 (2018), 21-28 International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com
More informationSSC-JE STAFF SELECTION COMMISSION MECHANICAL ENGINEERING STUDY MATERIAL REFRIGERATION CYCLES REFRIGERATION CYCLES REFRIGERATION CYCLES
SSC-JE SAFF SELECION COMMISSION MECHANICAL ENGINEERING SUDY MAERIAL 2 Syllabus: hermal Engineering () Refrigeration cycles; Principle of a Refrigeration Subject wise paper analysis: Mechanical Engineering
More information2.1 The ideal vapour-compression cycle
Refrigeration (Kylteknik) course # 424519.0 E v. 2017 2. Vapour-compression refrigeration processes Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory / Värme- och strömningsteknik
More information4.1 Refrigeration process comparison
Refrigeration (Kylteknik) course # 424519.0 v. 2017 4. Refrigeration process comparison; process equipment Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory / Värme- och strömningsteknik
More informationAnalysis of Constant Pressure and Constant Area Mixing Ejector Expansion Refrigeration System using R-1270 as Refrigerant
Analysis of Constant Pressure and Constant Area Mixing Ejector Expansion Refrigeration System using R-1270 as Refrigerant Ravi Verma 1, Sharad Chaudhary 2 1, 2 Department of Mechanical Engineering, IET
More informationBASE LEVEL AUDIT REQUIREMENTS REFRIGERATION SYSTEMS 1. SITE DATA COLLECTION. Business Name. Site physical address (Street, Suburb, City)
BASE LEVEL AUDIT REQUIREMENTS REFRIGERATION SYSTEMS 1. SITE DATA COLLECTION Business Name Site physical address (Street, Suburb, City) Nature of site / business operation Electricity Supplier Power factor
More informationMECHANICAL DEPARTMENT, OITM SEM: 6 TH REFRIGERATION & AIR-CONDITIONING PAPER: ME-302-E UNIT-I Q.1 (a) Derive an expression for the COP of Bell-Coleman refrigeration cycle in terms of pressure. (10) [May-09]
More informationCase 15 Refrigeration System for Chemical Fertilizer Plant Ammonia Storage
Case 15 Refrigeration System for Chemical Fertilizer Plant Ammonia Storage Copy Right By: Thomas T.S. Wan ) Dec. 28, 2012 All Rights Reserved Case Background: Ammonia is one of the important elements to
More informationMECHANICAL ENGINEERING ME.2017 FUNDAMENTAL OF REFRIGERATION AND AIR CONDITIONING. Sample Questions and Answers
MECHANICAL ENGINEERING ME.2017 FUNDAMENTAL OF REFRIGERATION AND AIR CONDITIONING Sample Questions and Answers CHAPTER 5 EVAPORATORS 1. What is Evaporator? Classify the various types of evaporator. Evaporator
More informationCOOLING THE STEAM POWER PLANT CONDENSER USING A VAPOR COMPRESSION REFRIGERATION SYSTEM. Yahya Ali Rothan
COOLING THE STEAM POWER PLANT CONDENSER USING A VAPOR COMPRESSION REFRIGERATION SYSTEM By Yahya Ali Rothan A DISSERTATION Submitted to Michigan State University in partial fulfillment of the requirements
More informationpdfmachine trial version
HVAC PROBLEM SHEET # 02(REVERSED BRAYTON CYCLE) 1. 500 kg of atmospheric air is circulated per hour in an open type of refrigeration installation. The air is drawn from the cold chamber at temperature
More informationExperiment Instructions. Basic Heat Pump Demonstrator
Experiment Instructions ET101 Basic Heat Pump Demonstrator 1 DIN 5 0 DIN 1 All rights reeserved G.U.N.T. Gerätebau GmbH, Barsbüttel, Germany, 01/97 0 0-1 bar 15 24 24 Kl.1,0-0.5-1 bar 9 Kl.1,0 5 Experiment
More informationModeling and Testing of an R-23/R-134a Mixed Refrigerant System for Low Temperature Refrigeration
Marquette University e-publications@marquette Mechanical Engineering Faculty Research and Publications Mechanical Engineering, Department of 1-1-2013 Modeling and Testing of an R-23/R-134a Mixed Refrigerant
More informationLast exam / sista tent
Värme- och strömningsteknik Thermal and flow engineering Refrigeration Kylteknik Ron Zevenhoven Exam 24-2-2017 4 questions, max. points = 8 + 8 + 6 + 8 = 30 All support material is allowed except for telecommunication
More informationEnergy and Exergy Analysis of an Ejector-Absorption Refrigeration Cycle with Using NH3-H2O as the Working Fluids
Energy and Exergy Analysis of an Ejector-Absorption Refrigeration Cycle with Using NH3-HO as the Working Fluids A. Habibzadeh 1, *, S. Jafarmadar 1, M. M. Rashidi, S. S. Rezaei 3, A. Aghagoli 3 1 Department
More informationUNIT-1 Q.1 Draw P-V and T-s diagram of Reversed Carnot cycle (2M-Apr./May-2009) Q.2 Define Ton of refrigeration and COP. (2M- Nov/Dec-2009)
UNIT-1 Q.1 Draw P-V and T-s diagram of Reversed Carnot cycle (2M-Apr./May-2009) Q.2 Define Ton of refrigeration and COP. (2M- Nov/Dec-2009) (2M-Apr./May-2011) Q.3 Differentiate between heat engine and
More informationPerformance Comparison of Ejector Expansion Refrigeration Cycle with Throttled Expansion Cycle Using R-170 as Refrigerant
International Journal of Scientific and Research Publications, Volume 4, Issue 7, July 2014 1 Performance Comparison of Ejector Expansion Refrigeration Cycle with Throttled Expansion Cycle Using R-170
More informationExperimental Analysis Of Vapour Compression Refrigeration System With Superheating By Using R-134a, R-12, R-717 Refrigerant
Experimental Analysis Of Vapour Compression Refrigeration System With Superheating By Using R-134a, R-12, R-717 Refrigerant Satish parmar 1, Ravindra Randa 2 1M.TECH. Scholar, Department Of Mechanical
More informationREFRIGERATION TUTOR. OBJECTIVE: To perform test on the refrigeration tutor to determine different COPs and other performance parameters.
REFRIGERATION TUTOR OBJECTIVE: To perform test on the refrigeration tutor to determine different COPs and other performance parameters. EXPERIMENTAL SETUP: All the components of refrigeration bench are
More information2. CURRICULUM. Sl. No.
. CURRICULUM Sl. No. Code Title No. of Lecture Hours 1 RAC 001 Fundamentals of Refrigeration and Air 60 conditioning RAC 00 Psychrometry, Heat load Estimation for 70 Air conditioning and Refrigeration
More informationCHAPTER 7 PERFORMANCE ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION SYSTEM IN HYBRID REFRIGERATION SYSTEM
111 CHAPTER 7 PERFORMANCE ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION SYSTEM IN HYBRID REFRIGERATION SYSTEM 7.1 INTRODUCTION Energy is the primary component to run any system in the world. According to
More informationPERFORMANCE OF A VERY LOW TEMPERATURE REFRIGERATION SYSTEM OPERATING WITH NATURAL FLUIDS
RIO 3 - World Climate & Energy Event, 1-5 December 23, Rio de Janeiro, Brazil 275 PERFORMANCE OF A VERY LOW TEMPERATURE REFRIGERATION SYSTEM OPERATING WITH NATURAL FLUIDS G. Venkatarathnam, V. Ravindranatha
More information6. Within an internal combustion engine, the can-shaped component that moves up and down the cylinder
Student ID: 22133336 Exam: 986052RR - Heat When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you hit Submit Exam. If you need to exit before
More informationInternational Research Journal of Engineering and Technology (IRJET) e-issn: Volume: 04 Issue: 05 May p-issn:
Comparison of Second Law Efficiency and Exergy Analysis of Refrigerants R-12, R-22, R-407C Influenced by Evaporator Temperature for Vapour Compression Refrigeration System Md Ozair Arshad Guest Faculty,
More information