Refrigerants Type Expensive Coefficient of Performance Toxic
|
|
- Alexis McKenzie
- 5 years ago
- Views:
Transcription
1 Chapter 11: Refrigeration Cycles Selecting the Right Refrigerants When designing a refrigeration system, there are several refrigerants from which to choose, such as chlorofluorocarbons (CFCs), ammonia, hydrocarbons, and even water. The right choose of the refrigerants are based on various factors. The most two parameters that need to be considered in the selection of the refrigerants are the temperatures of the two media and the heat transfer between the two media. Refrigerants Type Expensive Coefficient of Performance Toxic R134a Lowest Higher than R22 and R12 Friendly to the ozone cost R22 Higher cost Lower than ammonia and Most damage the ozone than R134a R134a R12 (Freon) Higher cost Lower than ammonia Most damage the ozone than R134a Ammonia Low cost High High toxicity 11.6 Heat Pump A heat pump can be used to heat a house in the winter and cool it in the summer. Heat pumps are generally more expensive to purchase and install than other heating systems, but they save money in the long run in some areas because they lower the heating bill. The most common energy source for heat pumps is atmospheric air. The soil and water could be another source. Fig Heat Pump in Heating and Cooling Mode 1
2 11.7 Innovative Refrigeration Systems Cascade Refrigeration systems Reason: A large temperature range causes low COP which means large range of the pressure. The two cycles operate in series are a good way to provide more efficient cycle which is called Cascade Refrigeration Cycles. The two cycles are connected through the heat exchanger in the middle as shown in Fig Fig.11.6 Cascade Refrigeration cycle m A(h 5 h 8 ) = m B(h 2 h 3 ) m A = h 2 h 3 m B h 5 h 8 COP R,cascade = Q L W net = m B(h 1 h 4 ) m A(h 6 h 5 ) + m B(h 2 h 1 ) 2
3 Multistage Comparison Refrigeration Systems Instead of using the middle evaporator (indirect heat exchanger), the Flash Chamber is employed. The fash chamber is used since it has better heat transfer charactersitics. Fig A Two-Stage Refrigeration Cycles Energy Balance on the two compressor yields: W in = m 1(h 2 h 1 ) + m 9(h 4 h 9 ) Energy Balance on Condenser: H = m 4 (h 4 h 5 ) Energy Balance on Evaporator: L = m 1(h 1 h 8 ) Mass Balance on Flash Chamber: m 6 = m 3 + m 7 Energy Balance on Flash Chamber: m 6h 6 = m 3h 3 + m 7h 7 3
4 Multipurpose Refrigeration Systems with a Single Compressor This is the ordinary Refrigerator-Freezer unit which is economical unit. Fig Refrigerator-Freezer Unit with a Single Compressor. Energy Balance on the compressor yields: W in = m 1 (h 2 h 1 ) Energy balance on the Refrigerator yields: L, R = m 5 (h 5 h 4 ) Energy balance on the Freezer yields: L, F = m 6 (h 1 h 6 ) The Coefficient of Performance is COP Ref = L, F + L, R W in Liquefaction Gases The liquefaction of gases has always been important area of refrigeration since many important scientific and engineering process at cryogenic temperatures (i.e. temperature below about -100 o C) depend on liquefied gases. How can we lower a gas temperature below its critical-point value? The liquefaction can be achieved using the regenerator heat exchanger. 4
5 Fig Linde-Hampson for liquefying gases Gas Refrigeration Cycles (Reversed Brayton Cycle) It is known as a reversed Brayton cycle. Fig Closed Reversed Brayton Cycle (Gas Refrigeration Cycle) 5
6 COP R = Q L = W net m 1(h 1 h 4 ) m 2(h 2 h 3 ) m 1(h 1 h 2 ) Fig Open Reversed Brayton Cycle. The reversed Brayton cycle or Gas Refrigeration cycle have two desirable characteristics: 1. They have simple and light component (they are suitable for aircraft cooling). 2. They are suitable for liquefaction of gases and cryogenic applications. Fig Regenerative Gas Refrigeration Cycle. 6
7 11.8. Absorption Refrigeration Systems To get inexpensive energy source, such as geothermal, solar, and waste heat energy, the absorption refrigeration cycle can be employed as shown in Fig This cycle utilizes NH3 as a refrigerant. Fig Ammonia Absorption Refrigeration Cycle. 7
Refrigerator 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 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 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 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. 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 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 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 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 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 informationWeek 9. Refrigeration Cycles I. GENESYS Laboratory
Week 9. Refrigeration Cycles I 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.
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 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 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 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 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 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 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 informationREFRIGERATION AND AIR CONDITIONING
REFRIGERATION AND AIR CONDITIONING SECOND EDITION S.N. Sapali Professor of Mechanical Engineering College of Engineering, Pune Delhi-110092 2014 REFRIGERATION AND AIR CONDITIONING, Second Edition S.N.
More informationMain Anthropogenic Sources of Greenhouse Gases Refrigerants
Main Anthropogenic Sources of Greenhouse Gases Refrigerants Content Refrigerant definition Refrigerants Refrigerants as a source of GHG Refrigerant Definition A refrigerant is a substance or mixture, usually
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 informationAmmonia. Background on ammonia as a refrigerant
Ammonia Danfoss Industrial refrigeration has written a technical paper on things to consider when changing from HFC/HCFC s to ammonia. It outlines some of the main differences between the different plant
More informationNova Movie: Absolute Zero
Nova Movie: Absolute Zero On a scale of 1 to 5 (1 being the best), how do you rank the Nova movie Absolute Zero compared to all other Nova presentations you have watched? A. 1 B. 2 C. 3 D. 4 E. 5 Gas Expansion
More informationAir Conditioning and process cooling Energy Components at a Glance
Energy Components at a Glance What is it? A means of providing cooling with mechanical refrigeration equipment. Where is it found? Chilled water is found in many plants, non-existent in others. Essential
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 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 informationCHAPTER 1 INTRODUCTION
1 CHAPTER 1 INTRODUCTION 1.1 Background The science which deals with creating a controlled climate in indoor space is called air conditioning. Earlier days the air-conditioning was treated as a luxury,
More informationInternational Journal of Research in Engineering and Innovation Vol-1, Issue-5 (2017), 68-72
International Journal of Research in Engineering and Innovation Vol-1, Issue-5 (2017), 68-72 International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com
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 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 informationQ. Which hydrocarbons can be used as a refrigerant? The following hydrocarbons can be used as a refrigerant in cooling & heating applications:
Basic Facts About Hydrocarbons Q. What are hydrocarbons? Hydrocarbon refrigerants are environmentally friendly, non-toxic, non-ozone-depleting replacement for chlorofluorocarbons (CFCs), hydrochlorofluorocarbons
More informationDesign and Fabrication of Water Refrigeration System by Creating Vacuum
Design and Fabrication of Water Refrigeration System by Creating Vacuum R.Sam Sukumar 1, Dr.A.Gopichand 2, U.Janardhana 3, V.Satish Kumar 4, B.Veera Chanti 5 Associate Professor, Department of Mechanical
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 informationEmerging Refrigeration Technologies
Emerging Refrigeration Technologies Brandon F Lachner, Jr Research & Technology Forum Madison, WI January 20-21, 2005 University of Wisconsin-Madison 1 Today Current Industrial Refrigeration Ammonia in
More informationPERFORMANCE OF REFRIGERATOR USING R-600A AS REFRIGERANT
PERFORMANCE OF REFRIGERATOR USING R-600A AS REFRIGERANT Binit Kumar Jha 1, Neelam Khandelwal 2, Prateek Singh 3, Nishtha Chaudhary 4, Hasan Ali 5 1 Professor and Head, 2 Assistant Professor, 3,4, Student
More informationGlobal Solutions for Ammonia Industrial Refrigeration
Global Solutions for Ammonia Industrial Refrigeration MAYEKAWA s lineups and results of Natural Refrigerants Atmosphere 2009 October19th 2009 Mayekawa Mfg. Co., Ltd. Kuniaki Kawamura 1 Founded: 1924 Location:
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 informationHYDROCARBONS, HEAT PUMP, HOME LAUNDRY DRYER: ENVIRONMENT FRIENDLY APPLIANCE
HYDROCARBONS, HEAT PUMP, HOME LAUNDRY DRYER: ENVIRONMENT FRIENDLY APPLIANCE Paolo VALERO Marek ZGLICZYNSKI Embraco Europe S.r.l. Via Buttigliera 6, 10020 Riva presso Chieri (To), Italy Fax: 0039-011-9437397
More informationInternational Journal of Research in Engineering and Innovation Vol-3, Issue-1 (2019), 1-5
International Journal of Research in Engineering and Innovation Vol-3, Issue- (9), -5 International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com ISSN
More informationCHAPTER 1 INTRODUCTION
CHAPTER 1 INTRODUCTION 1.1 CFC REFRIGERANTS Since the 1930s, chlorofluorocarbons (CFCs) have been widely used as foam blowing agents, aerosols and especially refrigerants due to their pre-eminent properties
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 information: REFRIGERATION & AIR CONDITIONING COURSE CODE : 6023 COURSE CATEGORY : A PERIODS/ WEEK : 6 PERIODS/ SEMESTER : 90 CREDIT : 6 TIME SCHEDULE
COURSE TITLE : REFRIGERATION & AIR CONDITIONING COURSE CODE : 6023 COURSE CATEGORY : A PERIODS/ WEEK : 6 PERIODS/ SEMESTER : 90 CREDIT : 6 TIME SCHEDULE MODULE TOPIC PERIODS 1 Introduction. Applications
More informationExperimental Investigation of Hot water Fired R134A-DMAC VARS System at Various Heat Source Temperatures
Journal of Energy Research and Environmental Technology pp. 20-25 Krishi Sanskriti Publications http://www.krishisanskriti.org/jeret.html Experimental Investigation of Hot water Fired R134A-DMAC VARS System
More informationCurrent use of HFCs and HCFCs. Trends, alternatives and climate impact. YEREVAN, Armenia, May 18-19, International Institute of Refrigeration
Current use of HFCs and HCFCs. Trends, alternatives and climate impact YEREVAN, Armenia, May 18-19, 2009 Didier COULOMB, Director of the IIR, d.coulomb@iifiir.org Institut du Froid (IIF) - www.iifiir.org
More informationAssessment of LPG as a possible alternative to R-12 in domestic refrigerators
Energy Conversion and Management 44 (2003) 381 388 www.elsevier.com/locate/enconman Assessment of LPG as a possible alternative to R-12 in domestic refrigerators Bilal A. Akash a, *, Salem A. Said b a
More informationHFCs or the Old Refrigerants - what is the best Choice?
HFCs or the Old Refrigerants - what is the best Choice? Hermann Halozan Institute of Thermal Engineering, Graz University of Technology Inffeldgasse 25 / B, A-8010 Graz, Austria, Phone: +43 316 873-7303
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 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 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 informationA Comparison Between Refrigerants Used In Air Conditioning
A Comparison Between Refrigerants Used In Air Conditioning Derya Özkan, Özden Agra and Özlem Çetin University of Yildiz Technical University, Turkey Corresponding email: tumer@yildiz.edu.tr SUMMARY It
More informationA refrigeration system for supermarkets using natural refrigerant CO 2
A refrigeration system for supermarkets using natural refrigerant CO 2 A. Campbell 1,2, G. G. Maidment 2 and J. F. Missenden 2 1 Tesco Stores Ltd, Shire Park, Welwyn Garden City 2 London South Bank University,
More informationA COMPARATIVE STUDY OF REFRIGERANTS R12, R134A, R407 & R717 FOR VAPOUR COMPRESSION REFRIGERATION SYSTEM
A COMPARATIVE STUDY OF REFRIGERANTS R12, R134A, R407 & R717 FOR VAPOUR COMPRESSION REFRIGERATION SYSTEM Md. Nawaz Khan 1, Md. Mamoon Khan 2 1 Assistant Professor, Department of Mechanical Engineering,
More informationLECTURE-18 Vapour Absorption Refrigeration System
Lecturer: -Dr. Esam Mejbil Abid Subject: Air Conditioning and Refrigeration Year: Fourth B.Sc. Babylon University College of Engineering Department of Mechanical Engineering LECTURE-18 Vapour Absorption
More informationStudy of Behavior of Refrigerant Mixtures in Domestic Refrigerator- Practical Research
International Journal of Engineering Trends and Applications (IJETA) Volume 5 Issue, Nov-Dec 201 RESEARCH ARTICLE Study of Behavior of Refrigerant Mixtures in Domestic Refrigerator- Practical Research
More informationNatural refrigerants - naturally efficient
Natural refrigerants - naturally efficient Operating systems with natural refrigerants for energy efficiency Frankfurt (Main), 10/11/2016. Whether energy transition in Germany or Energy Efficiency Act
More informationVapour Compression-Absorption Cascade Refrigeration System- Thermodynamic Analysis
Vapour Compression-Absorption Cascade Refrigeration System- Thermodynamic Analysis PARBHUBHAI R.TAILOR Department of Mechanical Engineering Sardar Vallabhbhai National Institute of Technology Surat,Gujarat-395007,INDIA
More informationSWIMMING POOL HEAT PUMPS
WHAT IS A POOL HEAT PUMP? Swimming pool heat pumps extract the heat stored in the ambient air and transfer it to water. It increases the water temperature to reach the desired level. Comparatively, it
More informationISSN Electronic International Interdisciplinary Research Journal (EIIRJ) Bi-monthly Reviewed Journal Mar- April 2015
Page77 Page78 COMPARATIVE ANALYSIS OF PERFORMANCE OF OZONE-FRIENDLY AND LOW GWP HFC REFRIGERANT IN A VAPOUR COMPRESSION REFRIGERATION CYCLE Kashid Hari T. 1,Khatpe Akshay R 1,Khile Parshuram N 1,Ligade
More informationArrangements of cold exchangers or cold accumulators in cryogenic separation or liquefaction plants.
CPC - F25J - 2017.08 F25J LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
More informationInternational Journal of Advance Engineering and Research Development
Scientific Journal of Impact Factor(SJIF): 3.134 e-issn(o): 2348-4470 p-issn(p): 2348-6406 International Journal of Advance Engineering and Research Development Volume 02,Issue 06, JUNE -2015 COMPARATIVE
More informationDesign of an Air Cooled Telephone Booth Using Solar Energy as Non-Conventional Energy Source
Advances in Materials Science and Mechanical Engineering Research Volume 1, Number 1 (2014), pp. 43-48 International Research Publication House http://www.irphouse.com Design of an Air Cooled Telephone
More informationDesign of LPG Refrigeration System
Design of LPG Refrigeration System Sethu Sathayan 1, Gopakumar M G 2, Jaya Krishnan S 3, Nanda Gopan 4, Nithin S 6 Assistant Professor, Department of Mechanical Engineering, SNIT Adoor, Kerala, India 1
More informationAdsorption Chillers Energysmart Green Cooling
Adsorption Chillers Energysmart Green Cooling New Partners in innovation Leaders in Dehumidification... Worldwide Power Partner Inc USA www.bryair.com Recover Low Grade Process Waste Heat For Energy Smart
More informationOyelami S., Bolaji B. O.
International Journal of Scientific & Engineering Research, Volume 6, Issue 6, June-2015 1158 Experimental Investigation of the Performance of Liquefied Petroleum Gas (LPG) Refrigerant in A Vapour Compression
More informationImproving and Comparing the Coefficient of Performance of Domestic Refgirator by using Refrigerants R134a and R600a
ISSN (e): 0 00 Vol, 0 Issue, 8 August 0 International Journal of Computational Engineering Research (IJCER) Improving and Comparing the Coefficient of Performance of Domestic Refgirator by using Refrigerants
More informationAZ(P)Y1 SERIES. Johnson Controls - Hitachi Air Conditioning AIR COOLED SCREW TYPE-WATER CHILLERS. R134a. Manufactured by:
Johnson Controls - Hitachi Air Conditioning Manufactured by: Johnson Controls-Hitachi Wanbao Air Conditioning (Guangzhou) Co.,Ltd. Address:No.110.ChengAo East Road, Conghua,Guangzhou City, Guangdong Province,China
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 informationEnhancement of COP using Nanoadditives in Domestic Refrigerator
ISSN 2395-1621 Enhancement of COP using Nanoadditives in Domestic Refrigerator #1 Mr.Sajjan Kawade, #2 Prof P.T.Kharat 1 sajjankawade@gmail.com 2 pradip5872@gmail.com #1 P.G. Student, Mechanical Engineering
More informationASSESSMENT OF R430A REFRIGERANT AS A POSSIBLE SUBSTITUTE TO R134A REFRIGERANT IN LARGE CAPACITY FREEZER
University of Maiduguri Faculty of Engineering Seminar Series Volume 6, december 5 ASSESSMENT OF REFRIGERANT AS A POSSIBLE SUBSTITUTE TO R34A REFRIGERANT IN LARGE CAPACITY FREEZER S. Shodiya*, M.B. Oumarou
More informationWaste Heat Utilization of Vapor Compression Cycle for Operation of Vapor Absorption System
Waste Heat Utilization of Vapor Compression Cycle for Operation of Vapor Absorption System 1 Avnish Chandra Pandey, 2 M. Akash Rao, 3 Sabyasachi Sahoo, 4 Narendra Kumar Students, Department of Mechanical
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 informationRefrigerant Dryers DRY with PDP Indicator
Refrigerant Dryers DRY with PDP Indicator Refrigerant dryers range From 333 lt./min up to 21.000 lt./min PDP: 5 C at reference conditions Whole range with the PDP indicator Max. working pressure: 16 bar
More informationCampbell Soup Company Extends Use of CO2 Systems Into Their Operations
Campbell Soup Company Extends Use of CO2 Systems Into Their Operations The Campbell Soup Company needed to expand their frozen operations at one of their Pepperidge Farm manufacturing plants in Pennsylvania
More informationEXERGY ANALYSIS OF DOMESTIC REFRIGERATOR WITH DIFFERENT REFRIGERANTS
International Journal of Scientific & Engineering Research Volume 3, Issue 7, July-2012 1 EXERGY ANALYSIS OF DOMESTIC REFRIGERATOR WITH DIFFERENT REFRIGERANTS Rahul ukey, Sharad chaudhary Abstract Electricity
More informationFABRICATION SOLAR REFRIGERATION SYSTEM BY PELTIER EFFECT
FABRICATION SOLAR REFRIGERATION SYSTEM BY PELTIER EFFECT Sivakumar.N a*, Agathiyan.V, Dhanush.S, Gokulnath.V, Jagadhesan.R b, c, d, e UG Scholar, Department of Mechanical Engineering, Gnanamani College
More informationFS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points
Name: Start time: End time: FS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points 1. What are the units of the following quantities? (10 points) a. Enthalpy of a refrigerant b. Dryness fraction of
More informationREFRIGERATION AND AIR CONDITIONING
REFRIGERAION AND AIR CONDIIONING For B.E/B.ech Engineering Students As Per Revised Syllabus of Leading Universities in India Including Dr. APJ Abdul Kalam echnological University, Kerala Dr. S. Ramachandran,
More informationPerformance of an Improved Household Refrigerator/Freezer
Performance of an Improved Household Refrigerator/Freezer D. O. Ariyo Department of Mechanical Engineering, School of Engineering, Federal Polytechnic, Offa, Nigeria Y. L. Shuaib-Babata Department of Mechanical
More information1.1. SCOPE OF THE WORK:
Chapter 1: Introduction 1 1. INTRODUCTION 1.1. SCOPE OF THE WORK: Multi-stage refrigeration systems are an area of growing industrial importance in large plants. These systems are known to be large power
More informationEXPERIMENTAL INVESTIGATION OF A REFRIGERATOR BY USING ALTERNATIVE ECO FRIENDLY REFRIGERANTS (R600A & HC MIXTURE)
October 217, Volume 4, Issue 1 EXPERIMENTAL INVESTIGATION OF A REFRIGERATOR BY USING ALTERNATIVE ECO FRIENDLY REFRIGERANTS (R6A & HC MIXTURE) 1 NULAKA RAJESWARI, 2 Dr. B.OMPRAKASH, 3 Dr. R.GANAPATHI, 1
More informationEnergy Saving & Eco-Friendly Refrigerant
Technical Seminar Energy Saving & Eco-Friendly Refrigerant Presented By Eva Yim Business Development Director Stephen Cheung Engineering Director Date : Oct 16, 2012 Others 25% Lighting 15% Air Conditioning
More informationPerformance Analysis of Li-Br Water Refrigeration System with Double Coil Anti-Swirl Shell and Coil Heat Exchangers
e-issn 2455 1392 Volume 2 Issue 5, May 2016 pp. 108-116 Scientific Journal Impact Factor : 3.468 http://www.ijcter.com Performance Analysis of Li-Br Water Refrigeration System with Double Coil Anti-Swirl
More informationEvaluation of HCFC Alternative Refrigerants
Evaluation of HCFC Alternative Refrigerants Shaobo Jia Global Innovation Heatcraft Worldwide Refrigeration shaobo.jia@heatcraftrpd.com Introduction It is well-known that HCFC refrigerants widely used in
More informationSOLAR COOLING TECHNOLOGIES
SOLAR COOLING TECHNOLOGIES S. SRINIVASA MURTHY Professor of Refrigeration & Clean Energy Technologies Energy Efficiency Summit 2010 Chennai Trade Centre, Chennai Department of Mechanical Engineering Indian
More informationChapter 2. Alternatives to HCFCs and their Characteristics
Alternatives to HCFCs and their Characteristics Refrigerant - General Chemical used in a cooling system, such as an air conditioner or refrigerator, as the heat carrier which changes from vapour to liquid
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 informationCAE 331/513 Building Science Fall 2017
CAE 331/513 Building Science Fall 2017 October 19, 2017 Refrigeration cycles (part 2) Advancing energy, environmental, and sustainability research within the built environment www.built-envi.com Twitter:
More informationImproving the Performance of Vapor Compression Refrigeration System by Using Phase Change Materials
Improving the Performance of Vapor Compression Refrigeration System by Using Phase Change Materials K.C.Siddaiah Post Graduate Student Department of Mechanical Engineering Global College of Engineering
More informationRS-70 is suitable as a direct replacement for R-22 in low, medium and high temperatures in a great number of applications:
TECHNICAL DATA SHEET Features and uses of is a non-azeotropic blend of HFC with zero Ozone Depletion Potential et low Global Warming Potential (GWP), formulated to meet the requirements of the F-Gas Regulation
More informationEVALUATION OF REFRIGERANT R290 AS A REPLACEMENT TO R22
EVALUATION OF REFRIGERANT R290 AS A REPLACEMENT TO R22 Ameya P. Shrivastava 1, Choudhari Chandrakishor S. 2 1,2 Mechanical Department, AISSMS College of Engineering, Pune 411001, (India) ABSTRACT HCFC
More informationPerformance Assessment of Water Cooled Condenser Refrigeration System
Energy and Power 2017, 7(3): 70-74 DOI: 10.5923/j.ep.20170703.03 Performance Assessment of Water Cooled Condenser Refrigeration System Sheetal Narayan Shetty *, Prashanth Kamath Department of Mechanical
More informationSTUDY ON HYBRID SYSTEM OF SOLAR POWERED WATER HEATER AND ADSORPTION ICE MAKER
, Volume 6, Number 4, p.168-172, 2005 STUDY ON HYBRID SYSTEM OF SOLAR POWERED WATER HEATER AND ADSORPTION ICE MAKER Zhaohui Qi School of Energy Science and Engineering, Centralsouth University, Changsha,
More informationEffects of evaporator load on vapour compression refrigeration system using ecofriendly hydrocarbon refrigerants with sub cooling
ISSN 2395-1621 Effects of evaporator load on vapour compression refrigeration system using ecofriendly hydrocarbon refrigerants with sub cooling #1 Mr. Sachin Das, #2 Prof. M. V. Khot #1 Student, Mechanical
More informationExperimental Study on Performance Parameters for Refrigerants R22, R410a and R404a at Various Air Outlet Temperatures
Experimental Study on Performance Parameters for Refrigerants, R41a and R44a at Various Air Outlet Temperatures P. Nagaraju P. G. Student Sanketika Institute of Technology and Management Ch. Kiran Kumar
More informationSolar Heating and Cooling Systems
Solar Heating and Cooling Systems Presented by: Dr. Georgios Florides Solar Space heating and Cooling A solar space heating and Cooling system can consist of a passive system, an active system, or a combination
More informationREFRIGERATION CYCLES
REFRIGERATION CYCLES Carnot Cycle We start discussing the well-known Carnot cycle in its refrigeration mode. Figure 1: Carnot Cycle In this cycle we define the coefficient of performance as follows: COP
More informationEXPERIMENTAL INVESTIGATION OF VAPOUR ABSORPTION SYSTEM
EXPERIMENTAL INVESTIGATION OF VAPOUR ABSORPTION SYSTEM AUTHOR 1.ME Student Mech Engg Dept,Godavari COE, Jalgaon,Maharashtra, India 2.Asso. Prof. & Head, Mech Engg Dept,Godavari COE, Jalgaon,Maharashtra,
More informationVolume 3, Issue 4 (2015) ISSN International Journal of Advance Research and Innovation
Thermodynamic Comparison Using HFO-1234yf and HFO-1234ze in the Refrigeration s and in Applications R. S. Mishra Department of Mechanical Engineering, Delhi Technological University, Delhi, India Article
More informationNATURAL REFRIGERANTS FOR HEAT PUMPS AND AIR-CONDITIONING SYSTEMS. Bernard Thonon Greth
NATURAL REFRIGERANTS FOR HEAT PUMPS AND AIR-CONDITIONING SYSTEMS Bernard Thonon Greth bernard.thonon@greth.fr Artificial or Natural Refrigerants? Performances COP Capacity Cost Safety Pressure, Temperature
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 informationGuidance for Stationary Refrigeration & Air-Conditioning
Information Sheet RAC 2 - Usage Guidance for Stationary Refrigeration & Air-Conditioning This Information Sheet provides background information about the use of stationary refrigeration, airconditioning
More information