RESEARCH ON NATURAL REFRIGERANTS IN JAPAN. WASEDA UNIVERSITY Kiyoshi SAITO
|
|
- Bertram Bryan Elliott
- 5 years ago
- Views:
Transcription
1 RESEARCH ON NAURAL REFRIGERANS IN JAPAN WASEDA UNIVERSIY Kiyoshi SAIO
2 INRODUCION In Japan, we have the highest level technologies for natural refrigerant use in the world. CO2 Residential heat pump water heater Commercial heat pump water heater Car air-conditioner Show case Bending machine NH3 Industrial refrigerator HC refrigerator for residential use Water Centrifugal chiller Absorption chiller Absorption heat transformer Air Air cycle refrigerator Desiccant air-conditioning CO2 Residential heat pump CO2 Commercial heat pump CO2 Car air-con. CO2 Show case CO2 Bending NH3 industrial refrigerator HC residential refrigerator Air cycle ref. H2O Centrifugal chiller Absorption chiller Development of these systems are supported by fundamental R&Ds Heat and mass transfer New devices development -heat exchanger, compressor, ejector System technology system development, simulation, control.. 2 Absorption heat transformer Desiccant air-conditioner
3 FUNDAMENAL RESEARCH Fundamental research Heat transfer Heat transfer coefficient kw/m 2 K Heat transfer coefficient kw/m 2 K Vapor quality D in =.mm D in = 3.mm sat : -.39 ~ -.8 Upper portion Under portion sat : -3.7 ~ -1.8 Upper portion Under portion Vapor quality Fig. Comparison of CO 2 evaporating heat transfer for smooth tube and Micro-fin tube 2mm Chaobin Dang, Nobori Haraguchi, Eiji Hihara, international journal of refrigeration 33(2) Fig. Gas cooler heat transfer coefficient Effect of oil contamination, 1,2 mm Chaobin Dang, Koji Iino, Ken Fukuoka, Eiji Hihara, International journal of refrigeration 33(27) Heat transfer coefficient kw/m 2 K D in = 1.mm sat : -4. ~ Upper portion U n d e r p o r t i o n Vapor quality Fig. Ammonia mini channel Evaporating heat transfer
4 NEW DEVICE DEVELOPMEN Comp. Scroll wo stage Swing Rotary Combi.. of Rotary and scroll CO2-Water Heat ex. Piping embedded 水配管 ( ツイスト管 ) 冷媒配管 Ejector Expander Ejector Expander 4
5 NEW SYSEM~ABSORPION HEA RANSFORMER Refrigerant Separator H Absorber Steam Separator SV Second stage EH AH S Steam.4.3 Evaporator Absorbing Evaporator COP.2 Water RP Condenser EL C Generator AL GL SP Hot Water Hot Water Feed Water Fig. Double stage absorption heat transformer (National project by NEDO) Pressure P kpa.1 AH EL C Hot water inlet temperature o HW C Fig. Results With this cycle, 18 steam can be produced fro 9 oc waste hot water.
6 NEW SYSEM~ Evaluation of CO 2 refrigeration system for convenience store Evaporator Flow Compressor Gas cooler Compressor Compressor 凝縮器 Condenser Evaporator 蒸発器 凝縮器 Condenser Higher pressure side cycle Lower pressure side cycle Evaporator 蒸発器 Showcase Fig. Cascade refrigeration system SANDEN National project by NEDO 6
7 NEW SYSEM ~CENRIFUGAL CHILLER Feature Water is refrigerant New compressor for water refrigerant is developed. COP.1 All most the same size with conventional system. Oil free capa. USR Fig. Water refrigerant centrifugal chiller Produced by Kawasaki 山内正史, 水を冷媒としたターボ冷凍機, 日本冷凍空調学界, 平成 24 年度最新の冷媒と利用技術の動向, セミナー資料 7
8 空調機 NEW SYSEM~CO 2 HEA RANSPORAION Heat transportation system whose refrigerant is CO 2 Conventional Server rack (blade server) Hot spot Objective Spot cooling inside unit 4 verall air onditioner Supply air 2 機Ceiling Overall air conditioner Ceiling Fig. Conventional data center (Overall air-conditioning method) Floor Hot spot occurs some server stops Fan power increases Energy use emp. of circulated air decrease increase Fig. Spot- air conditioning system (combining spot cooling unit with overall air-conditioner) Floor 8
9 NEW SYSEM~CO 2 HEA RANSPORAION Chiller Spot cooling unit Heat transportation system Heat transfer flow rate in evaporator Q kw Latent heat ratio in evaporator γ Spot cooling system consists of chiller heat transportation system spot cooling unit o realize effective spot cooling method, heat transportation system is very important. his system has very good potential with higher performance because CO 2 is good transport medium. Rack outlet air temp. 3 o C Exp. Sim. 3 o C Exp. Sim. 2 o C Exp. Sim. 2 o C Exp. Sim Working fluid mass flow rate G b kg/min 9 Pressure drop in Evaporation ΔP kpa air temp. in evaporator outlet o C Working fluid mass flow rate G b kg/min Fig. Results Evaporation pressure P MPa Heat transpotation performance factor P f Working fluid mass flow rate G b kg/min
10 NEW SYSEM ~HC EJECOR SOLAR COOLING Ejector.6..4 Ammonia n-butane Iso-Butane R134a R24fa R22 HFO1234yf HFO1234ze COP Condensation temperature Fig. Ejector heat pump system Fig. Simulation results his system is ejector heat pump system without compressor. his system can be driven by solar energy. he best refrigerant for this system is ammonia, then HC. We are going to realize this system with natural refrigerant.
11 SIMULAION ECH. ~HEA EXCHNGER L 7 P Ref. inlet Air inlet Ref. outlet P Air outlet LF,t LF,Pi emperature 6 4 Sim. Exp Number Fig. Results of condenser We develop the system simulator Energy flow +M. his simulator is user friendly because this uses GUI. his simulator can calculate performance of heat exchanger with high precision. Fig. System flow 11
12 SIMULAION ECH. ~SYSEM1 Exp. Eva. Cond. Controller Comp. Accum. Rotational speed n COM1 rps Valve1 opening pulse Valve2 opening pulse Valve3 opening pulse Valve4 opening pulse Pressure P COM O kpa Pressure P COM I kpa ime t s Compressor input kw capacity Q EVA1 kw capacity Q EVA2 kw capacity Q EVA3 kw capacity Q EVA4 kw capacity kw COP ime t s Fig. Simulation results For dynamics of comp. cycle Fig. Simulator Energy flow+m With this simulator, we can change the refrigerant easily. We can estimate every performance of the system that uses different refrigerant. 12
13 SIMULAION ECH. ~SYSEM2 HC drop-in test. Fig. Using R4a system for drop in test able heoretical compression cycle R 4A HC 6a (Original) (Drop-in) Evaporation temperature,. Condensation temperature, 4. Sub cooled temperature,. Super heat temperature,. Adiabatic efficiency, 1. - heoretical COP, Refrigerant flow rate per a unit cooling capacity, kg/(s kw) HC is very good refrigerant theoretically. But only with drop in, the performance is getting worse. We are now trying to optimize the air-conditioner with HC by simulation. 13 able Exp. & Sim. result (Rated cooling) Refrigerant capacity, kw Electric input, kw COP, - R 4A (Original) HC 6a (Drop-in) Exp. Sim. Exp. Sim able Exp. & sim. result (Half load cooling) Refrigerant R 4A (Original) HC 6a (Drop-in) Exp. Sim. Exp. Sim. capacity, kw Electric input, kw COP,
14 SIMULAION ECH. ~SIMULAOR デモンストレーション 14
LATEST HEAT PUMP TECHNOLOGIES IN JAPAN. Waseda University Kiyoshi Saito
LATEST HEAT PUMP TECHNOLOGIES IN JAPAN Kiyoshi Saito IEA Heat Pump Conference 217 INTRODUCTION In Japan, since great effort to improve performance of heat pump system has been made, still new technologies
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 informationEvaluation and Development of Air-conditioners using Low GWP Refrigerant
th IEA Heat Pump Conference 07 Rotterdam Evaluation and Development of Air-conditioners using Low GWP Refrigerant Shigeharu TAIRA, Tomoyuki HAIKAWA *, Tomoatsu MINAMIDA DAIKIN INDUSTRIES, LTD. 6th, May,
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 informationExperimental Study on Compact Heat Pump System for Clothes Drying Using CO 2 as a Refrigerant. Abstract
Experimental Study on Compact Heat Pump System for Clothes Drying Using CO 2 as a Refrigerant M. Honma, T. Tamura, Y. Yakumaru and F. Nishiwaki Matsushita Electric Industrial Co., Ltd. Living Environment
More information4th IIR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants 2013
4th IIR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants 2013 Refrigeration Science and Technology Proceedings 2013-3 Delft, The Netherlands 17-19 June 2013
More informationPERFORMANCE EVALUATION OF CO 2 HEAT PUMP HEATING SYSTEM ABSTRACT 1. INTRODUCTION
PERFORMANCE EVALUAION OF CO 2 HEA PUMP HEAING SYSEM O. KUWABARA (a), M. KOBAYASHI (a), H. MUKAIYAMA (a) M. ISHIKAWA (b), K. MUKUNOKI (b), N. HONMA (b) (a) R&D Headquarters, Sanyo Electric Co., Ltd. 1-1-1,
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 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 informationEnhancement of the Separate Sensible and Latent Cooling Air-Conditioning Systems
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2010 Enhancement of the Separate Sensible and Latent Cooling Air-Conditioning
More informationA study of high efficiency CO2 refrigerant VRF air conditioning system adopting multi-stage compression cycle
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2016 A study of high efficiency CO2 refrigerant VRF air conditioning system
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 informationKawasaki centrifugal chiller using water as a refrigerant. Sep 26 th 2017 Kawasaki Heavy Industries, Ltd. Machinery Division Hayato Sakamoto
Kawasaki centrifugal chiller using water as a refrigerant Sep 26 th 2017 Kawasaki Heavy Industries, Ltd. Machinery Division Hayato Sakamoto Contents 1. Introduction of MiZTURBO 2. Study of CO 2 emissions
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 informationSTUDY ON THE CONTROL ALGORITHM OF THE HEAT PUMP SYSTEM FOR LOAD CHANGE
Numbers of Abstract/Session (given by NOC) - 1 - STUDY ON THE CONTROL ALGORITHM OF THE HEAT PUMP SYSTEM FOR LOAD CHANGE Seok Ho Yoon, Kong Hoon Lee, Chan Ho Song, and Ook Joong Kim Environment and Energy
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 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 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 informationExperimental Research On Gas Injection High Temperature Heat Pump With An Economizer
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2014 Experimental Research On Gas Injection High Temperature Heat Pump With
More informationDevelopment of compact air heat pump inverter module chiller Air heat pump chiller DT-R(4 units)
Development of compact air heat pump inverter module chiller Air heat pump chiller DT-R(4 units) Takuya ITO Mitsubishi Electric Corporation 1 Biography Belonging The Air-conditioning & Refrigeration systems
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 informationPerformance Evaluation of Heat pump System using R32 and HFO-mixed Refrigerant in High Ambient Temperature.
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2016 Performance Evaluation of Heat pump System using and ed Refrigerant in
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 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 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 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 informationResearch on Waste Heat Recovery System for Residential Gas Engine-Driven Heat Pump
Exhaust Research on Waste Heat Recovery System for Residential Gas Engine-Driven Heat Pump Takeshi YOKOYAMA, TECHNOLOGY DEVELOPMENT DEPT, TOKYO GAS CO., LTD, 3-3-, MINAMISENJU, ARAKAWAKU, TOKYO, JAPAN
More informationPerformance Characteristics of Air-Conditioner Under Tropical Ambient Condition
Purdue University Purdue e-pubs nternational Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2 Performance Characteristics of Air-Conditioner Under Tropical Ambient Condition
More informationA Review of Hydroflorocarbons (HFC S) Refrigerants as an Alternative to R134a Refrigerant
International Journal of Current Engineering and Technology E-ISSN 2277 416, P-ISSN 2347 5161 216 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article A Review
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 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 informationSHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT
QUIZ TEST-1 Time: 1 Hour REFREGERATION AND AIRCONDITIONING Max. Marks: 30 Q1) A refrigerator working on Bell-Coleman cycle (Reverse Brayton cycle) operates between 1 bar and 10 bar. Air is drawn from cold
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 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 informationACTUAL ENERGY CONSERVATIONS BY USING NH3/CO2 REFRIGERATION SYSTEM
Proceedings of the 3 rd International Conference of Saving Energy in Refrigeration and Air-Conditioning ICSERA2013 October 23-25, 2013, Chonnam National University, Yeosu, Jeollanam-Do, KOREA ICSERA2013-3-C-2
More informationCO 2 Heat Pump Water Heaters for Commercial & Industrial Applications
CO 2 Heat Pump Water Heaters for Commercial & Industrial Applications Troy Davis, Mayekawa USA John Bush, EPRI ACEEE Hot Water Forum February 22, 2016 Presentation Overview Natural Refrigerant Summary
More information"COP Enhancement Of Domestic Refrigerator By Sub cooling And Superheating Using Shell &Tube Type Heat Exchanger"
"COP Enhancement Of Domestic Refrigerator By Sub cooling And Superheating Using Shell &Tube Type Heat Exchanger" 1 Prof.Gaffar G.Momin, 2 Sagar B. Tupe, 2 Swapnil A. Parate 2 Omkar G. Yewale 2 Aakash P.
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 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 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 informationOptimization of Capillary Tube Parameters in Vapour Compression System using Environmentally Friendly Refrigerant R1234yf
Optimization of Capillary Tube Parameters in Vapour Compression System using Environmentally Friendly Refrigerant R1234yf Gaurav #1, Raj Kumar* 2 1# Research Scholar, Department of Mechanical Engineering,
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 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 informationFeaturing Ozone-safe HFC134a. Hitachi Centrifugal Chillers NEW. GXG-S Series GSG-S Series. Debut
Featuring Ozone-safe HFC134a Hitachi Centrifugal Chillers NEW GXG-S Series GSG-S Series Debut Centrifugal Chiller New GXG-S, GSG-S Series Debut High-efficiency New series Centrifugal Chillers that use
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 informationExperimental study on automotive cooling and heating air conditioning system using CO 2 as a refrigerant
International Journal of Refrigeration 28 (2005) 1302 1307 www.elsevier.com/locate/ijrefrig Experimental study on automotive cooling and heating air conditioning system using CO 2 as a refrigerant Tomoichiro
More informationEFFECT OF PAG OIL CIRCULATION RATE ON THE HEAT TRANSFER PERFORMANCE OF AIR-COOLED HEAT EXCHANGER IN CARBON DIOXIDE HEAT PUMP SYSTEM
- 1 - EFFECT OF PAG OIL CIRCULATION RATE ON THE HEAT TRANSFER PERFORMANCE OF AIR-COOLED HEAT EXCHANGER IN CARBON DIOXIDE HEAT PUMP SYSTEM Shun YOSHIOKA, Hyunyoung KIM, Kazushige KASAI, Daikin Industries,
More informationDevelopment Of 2-Cylinder Rotary Compressor Series For Light Commercial Use With R410A
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2002 Development Of 2-Cylinder Rotary Compressor Series For Light Commercial Use With R410A
More informationExperiments on Expansion and Superheat Processes of a Co 2 Cycle Using Microchannel Evaporator
American Journal of Engineering Research (AJER) e-issn: 2320-0847 p-issn : 2320-0936 Volume-6, Issue-3, pp-115-121 www.ajer.org Research Paper Open Access Experiments on Expansion and Superheat Processes
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 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 informationThe analysis proceeded by adopting the ASHRAE guideline for conventional HVAC chiller applications. This guideline is summarized in Table II.
Comparison of R134a and R1234ze for New Chiller Systems and for Fluid (Drop-In) in Existing Systems Francis A. Di Bella, P.E. Adam Weaver Colin Osborne Executive Summary A chiller cycle analysis is presented
More informationEvaluation and Optimization of System Performance using HFO-mix Refrigerants for VRF and Mini-split Air-Conditioner
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2018 Evaluation and Optimization of System Performance using HFO-mix Refrigerants
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 informationImpact of Multi-Stage Liquid Desiccant Dehumidification in a Desiccant and Evaporative Cooling-Assisted Air Conditioning System
4 th International Conference On Building Energy Environment Impact of Multi-Stage Liquid Desiccant Dehumidification in a Desiccant and Evaporative Cooling-Assisted Air Conditioning System J Y Park H W
More informationSustainability of Automobile Air- Conditioning System Using Refrigerant R1234yf Instead of R134a
Sustainability of Automobile Air- Conditioning System Using Refrigerant R1234yf Instead of R134a Gaurav 1 and Raj Kumar 2 1,2Department of Mechanical Engineering, YMCA University of Science & Technology,
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 informationPerformance and exergy analysis of vapour compression refrigeration system using various alternative of R134a.
Performance and exergy analysis of vapour compression refrigeration system using various alternative of R134a. Raja Kumar Gond 1, Ravindra Pratap Chaudhary 2, Mohammad Amir Khan 3, Gaurav Jain 4 1Student,
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 informationRecent Advances in Energy, Environment and Economic Development
Experimental Investigation of Solar Hybrid Desiccant Cooling System in Hot and Humid Weather of Malaysia MM SALEHI DEZFOULI, Z HASHIM, MH RUSLAN, B BAKHTYAR, K SOPIAN, A ZAHARIM, S MAT, A RACHMAN, Solar
More informationUnofficial Translation
Unofficial Translation Ministry of Energy s Notification On Identification of Coefficient of Minimum Performance, Cooling Efficiency, and Electrical Power per Ton Refrigeration of Air Conditioning System
More informationMath. The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb.
HVAC Math The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb. Math F. to C. Conversion = (f-32)*(5/9) C. to F. Conversion = C * 9/5 +
More informationAustralian Journal of Basic and Applied Sciences. Investigation of New Eco Friendly Refrigerant Mixture Alternative to R134a in Domestic Refrigerator
ISSN:1991-8178 Australian Journal of Basic and Applied Sciences Journal home page: www.ajbasweb.com Investigation of New Eco Friendly Refrigerant Mixture Alternative to R134a in Domestic Refrigerator 1
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 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 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 informationA new method for preventing air-source heat pumps and refrigerators from frosting
12 th IEA Heat Pump Conference 2017 A new method for preventing air-source heat pumps and refrigerators from frosting Central Research Institute of Electric Power Industry L. Zhang, T. Fujinawa, K. Hashimoto*,
More informationPerformance test of a helium refrigerator for the cryogenic hydrogen system in J-PARC
Proceedings of ICEC -ICMC 8, edited by Ho-Myung CHANG et al. c 9 The Korea Institute of Applied Superconductivity and Cryogenics 978-89-978-- Performance test of a helium refrigerator for the cryogenic
More informationThe Development Of High Efficiency Air Conditioner With Two Compressors Of Different Capacities
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2002 The Development Of High Efficiency Air Conditioner With Two Compressors
More informationTEST REPORT #43. System Drop-in Tests of Refrigerants L-41-1, L-41-2, and R-32 in Water-to- Water Heat Pump
Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Low-GWP Alternative Refrigerants Evaluation Program (Low-GWP AREP) TEST REPORT #43 System Drop-in Tests of Refrigerants L-41-1, L-41-2, and
More informationDevelopment of centrifugal chiller and heat pump using low GWP refrigerant
Development of centrifugal chiller and heat pump using low GWP refrigerant Ryosuke Suemitsu 1*, Naoya Miyoshi 1, Yasushi Hasegawa 1, Kazuki Wajima 1, Yoshinori Shirakata 1, Kenji Ueda 1 1 Mitsubushi Heavy
More informationDesign, Manufacturing of Chilled Water System for Process Cooling Application
IJSTE - International Journal of Science Technology & Engineering Volume 2 Issue 11 May 2016 ISSN (online): 2349-784X Design, Manufacturing of Chilled Water System for Process Cooling Application Prof.
More informationExperimental Study Of An Ejector Refrigeration System
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2012 Experimental Study Of An Ejector Refrigeration System Christopher Reddick
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 informationAlternative Cooling Processes 1. Classification of Refrigeration Cycles. Agenda. Hans Jonsson
Alternative Cooling Processes 1 Hans Jonsson Classification of Refrigeration Cycles Mechanically Driven Cycles - Vapor Compression Cycle Heat Driven Processes - Carré Process - Platen-Munters Process -
More informationDunham Bush Air Cooled Screw Chiller AFVX B 6SR Series
Dunham Bush Air Cooled Screw Chiller AFVX B 6SR Series Type of Compressors Compressor Rotary Scroll Reciprocating Screw Centrifugal Air Cooled Chiller 77 ~ 329TR (270 ~ 1156 kw) ACDX Series 100 ~ 520TR
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 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 informationZero Internal Heating/Cooling Load Air-Conditioning system
Zero Internal Heating/Cooling Load Air-Conditioning system Study on Indoor Thermal Environment of an Office Room with the Liquid Cooling Air-conditioning System Li Wang (University of Tokyo, Japan) (leowang19861986@gmail.com)
More informationWaghmare Tushar Ramrao, D.S.Nakate
International Engineering Research Journal Performance analysisof vapor compression system by using capillary tube suction line heat exchanger and helical condenser for R134a Waghmare Tushar Ramrao, D.S.Nakate
More information2013 Product Range Precision Air Conditioners (CRAC)
2013 Product Range Precision Air Conditioners (CRAC) 2013 Product Range RC Group air conditioners range CLOSE CONTROL AIR CONDITIONERS 2,0-244,0kW HEAT PUMP AIR CONDITIONERS 6,3-113,0kW 6,3-101,0kW AIR
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 informationInternational Journal of Engineering & Technology Sciences Volume 03, Issue 01, Pages 55-64, 2015
International Journal of Engineering & Technology Sciences Volume 03, Issue 01, Pages 55-64, 2015 ISSN: 2289-4152 Performance Evaluation of Vapour Compression Refrigeration System Using Double Effect Condensing
More informationChapter-8 Capacity Control of Refrigeration Systems
Chapter-8 Capacity Control of Refrigeration Systems Chapter-8 Capacity Control of Refrigeration Systems ၈.၁ Compressor Control Chiller Control and Chilled Water Plant Control Refrigeration system control
More informationSummary Comparison of Simulation Program Features
Summary Comparison of Simulation Program Features FEATURE DOE2.2 equest TRACE 700 HAP Public/Proprietary Public Domain Proprietary Proprietary Proprietary Simulation Method 8760 hours 8760 hours 8760 hours
More informationREFRIGERATED AIR DRYERS SCFM. CRPC Energy Saving Series
REFRIGERATED AIR DRYERS 75 550 SCFM CRPC Energy Saving Series CHAMPION CRPC SERIES Sustainable Energy Saving Solutions Champion is a place where innovation is constant and the real-world needs of our customers
More informationLow GWP Refrigerants for Air Conditioning Applications
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2014 Low GWP Refrigerants for Air Conditioning Applications Samuel F. Yana Motta
More informationIJESRT. Scientific Journal Impact Factor: (ISRA), Impact Factor: 1.852
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Experimental Study on Performance of Condenser of Two Different Types Used in Window Air Conditioner Madhu Jhariya *1, P.K. Jhinge
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 informationChillers, air and water cooled, featuring centrifugal compressors with magnetic levitation, from 200 to kw
Chillers, air and water cooled, featuring centrifugal compressors with magnetic levitation, from 200 to 1.99 kw Centrifugal compressor with magnetic levitation This is a miniaturized, highly innovative
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 informationAvailable online at ScienceDirect. Procedia Engineering 121 (2015 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 121 (2015 ) 1222 1229 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International
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 informationCarbon Dioxide based Heat Pump Dryer in Food Industry
1 Carbon Dioxide based Heat Pump Dryer in Food Industry J. Sarkar 1, S. Bhattacharyya, M. Ram Gopal Department of Mechanical Engineering Indian Institute of Technology, Kharagpur West Bengal, India 721302
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 informationDue to its low temperature glide about 1.5 approx. (75% less than R-407C and R-427A), it is suitable for a wide range of applications.
TECHNICAL DATA SHEET R434A () Features and uses of R-434A () is a non-flammable HFC mixture. ODP = 0, compatible with traditional mineral lubricants, alkyl benzene and also with synthetic POE, so there
More informationR&D ON HEAT PUMPS WITH NATURAL WORKING FLUIDS IN JAPAN
R&D ON HEAT PUMPS WITH NATURAL WORKING FLUIDS IN JAPAN E. Hihara, Professor, Institute of Environmental Studies, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan The conventional refrigerant
More informationVolume 2, Issue 4 (2014) ISSN International Journal of Advance Research and Innovation
Use of Hydrocarbons in Low Temperature Circuit in Terms of First Law and Second Law of Four Stage Cascade Refrigeration of Semen Preservation R.S. Mishra Department of Mechanical Engineering, Delhi Technological
More information