Fundamental process and system design issues in CO2 vapor compression systems

This paper presents recent developments and state of the art for transcritical CO2 cycle technology in various refrigeration, air-conditioning and heat pump applications. The focus will be on fundamental process and system design issues, including discussions of properties and characteristics of CO2, cycle fundamentals, methods of high-side pressure control, thermodynamic losses, cycle modifications, component/system design, safety factors, and promising application areas. The article provides a critical review of literature, and discusses important trends and characteristics in the development of CO2 technology in refrigeration, air-conditioning and heat pump applications. Advanced cycle design options are also introduced suggesting possible performance improvements of the basic cycle. q 2003 Published by Elsevier Ltd.

[1]  H. Taniwa,et al.  Development Of Hermetic Swing Compressors For CO2 Refrigerants , 2002 .

[2]  W. Wagner,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple‐Point Temperature to 1100 K at Pressures up to 800 MPa , 1996 .

[3]  Eckhard A. Groll,et al.  Efficiencies of transcritical CO2 cycles with and without an expansion turbine , 1998 .

[4]  Clark W. Bullard,et al.  Development of a microchannel evaporator model for a CO2 air-conditioning system , 2001 .

[5]  Clark W. Bullard,et al.  Effect of inclination on the air-side performance of a brazed aluminum heat exchanger under dry and wet conditions , 2001 .

[6]  Predrag Stojan Hrnjak,et al.  Frost deposition and refrigerant distribution in microchannel heat exchangers , 2002 .

[7]  J. Trusler,et al.  Speed of sound in carbon dioxide at temperatures between (220 and 450) K and pressures up to 14 MPa , 1998 .

[8]  G Lorentzen,et al.  The use of natural refrigerants: a complete solution to the CFC/HCFC predicament , 1995 .

[9]  Unfccc.  Kyoto Protocol to the United Nations Framework Convention on Climate Change , 1997 .

[10]  P. Nekså,et al.  CO2-heat pump water heater: characteristics, system design and experimental results , 1998 .

[11]  V. Gnielinski.  New equations for heat and mass transfer in turbulent pipe and channel flow , 1976 .

[12]  Clark W. Bullard,et al.  Dynamic Characteristics of a R-410A Split Air Conditioning System , 2001 .

[13]  H. Baumann,et al.  Small Oil Free Piston Type Compressor For CO2 , 2002 .

[14]  Predrag Stojan Hrnjak,et al.  Heat transfer and pressure drop of gas coolers , 2001 .

[15]  Jostein Pettersen,et al.  Flow vaporization of CO2 in microchannel tubes , 2004 .

[16]  H. Kruse,et al.  Efficiency of the indicated process of CO2-compressors , 1998 .

[17]  Predrag Stojan Hrnjak,et al.  Experimental Comparison of Mobile A/C Systems When Operated With Transcritical CO2 Versus Conventional R134A , 1998 .

[18]  Hsinheng Li,et al.  Experimental study of lubricant candidates for the CO2 refrigeration system , 2001 .

[19]  Verfahrenstechnische Gesellschaft im Vdi.  VDI-Wärmeatlas : Berechnungsblätter für den Wärmeübergang , 1963 .

[20]  Predrag Stojan Hrnjak,et al.  An Investigation of Control-Related Issues In Transcritical R744 and Subcritical R134a Mobile Air Conditioning Systems , 1999 .

[21]  Douglas A. Olson.  Heat transfer of supercritical carbon dioxide flowing in a cooled horizontal tube , 2000 .

[22]  Predrag Stojan Hrnjak,et al.  Control strategies for transcritical R744 systems , 2000 .

[23]  Petter Nekså,et al.  [집중기획 : CO₂ 냉난방기술] CO₂ Refrigeration, Air Conditioning and Heat Pump Technology Development in Europe , 2002 .

[24]  Michael M. Ohadi,et al.  Flow boiling of CO{sub 2} in microchannels , 2000 .

[25]  J. S. Baek,et al.  Development Of A Piston-Cylinder Expansion Device For The Transcritical Carbon Dioxide Cycle , 2002 .

[26]  Rudolf Heide,et al.  Mischbarkeit von Schmierölen mit Kohlendioxid , 2001 .

[27]  Clark W. Bullard,et al.  Air-side thermal hydraulic performance of multi-louvered fin aluminum heat exchangers , 2002 .

[28]  P. Hrnjak,et al.  R-744 gas cooler model development and validation , 2001 .

[29]  S J Randles,et al.  Valutazione critica dei lubrificanti sintetici per refrigeranti alternativi./ A critical assessment of synthetic lubricant technologies for alternative refrigerants. , 2003 .

[30]  H. Quack,et al.  Transcritical CO2-CYCLE with expander-compressor , 2001 .

[31]  Predrag Stojan Hrnjak,et al.  Performance of the Prototype of a Transcritical R744 Mobile A/C System , 1999 .

[32]  Eckhard A. Groll,et al.  Heat transfer from supercritical carbon dioxide in tube flow: A critical review , 1998 .

[33]  Yunho Hwang,et al.  Experimental evaluation of CO2 water heater. Discussion , 1998 .

[34]  J. Fahl,et al.  Thermoanalyse synthetischer Schmieröle mit DSC und TGA , 2001 .

[35]  Predrag Stojan Hrnjak,et al.  Contribution of Internal Heat Exchanger to Transcritical R-744 Cycle Performance , 2001 .

[36]  Predrag Stojan Hrnjak,et al.  Comparative Experimental Study of Subcritical R134a and Transcritical R744 Refrigeration Systems for Mobile Applications , 1999 .

[37]  A. Cavallini,et al.  CO2 heat pumps in controlled ventilation systems. Discussion , 1998 .

[38]  D. Lindsay,et al.  Positive Displacement Compressor And Expander Simulation , 2002 .

[39]  Ulrich Grigull,et al.  Heat Transfer in Boiling , 1977 .

[40]  P. S. Hrnjak,et al.  Experimental Study of System Performance Improvements in Transcritical R744 Systems for Mobile Air-Conditioning and Heat Pumping , 2002 .

[41]  Clare Breidenich,et al.  The Kyoto Protocol to the United Nations Framework Convention on Climate Change , 1998, American Journal of International Law.

[42]  V. D. Baxter,et al.  Comparison of TEWI for fluorocarbon alternative refrigerants and technologies in residential heat pumps and air conditioners , 1999 .

[43]  Eckhard A. Groll,et al.  Convective Heat Transfer from In-Tube Cooling of Turbulent Supercritical Carbon Dioxide: Part 2—Experimental Data and Numerical Predictions , 2001 .

[44]  Predrag Stojan Hrnjak,et al.  Experimental and model comparison of transcritical CO2 versus R134a and R410 system performance. Discussion , 1998 .

[45]  W. E. Kraus,et al.  Design considerations for a second-generation CO2-expander. , 2002 .

[46]  W. Wakeham,et al.  The Viscosity of Carbon Dioxide , 1998 .

[47]  Petter Nekså,et al.  Development of two-stage semi-hermetic CO2-COMPRESSORS , 2001 .

[48]  Predrag Stojan Hrnjak,et al.  Compact counterflow gas cooler for R-744 , 2002 .

[49]  Clark W. Bullard,et al.  Experimental results of transcritical CO2 heat pump for residential application , 2003 .

[50]  Clark W. Bullard,et al.  Effect of Comfort Constraints on Cycle Efficiencies , 2001, Advanced Energy Systems.

[51]  Eckhard A. Groll,et al.  Convective Heat Transfer from In-Tube Flow of Turbulent Supercritical Carbon Dioxide: Part 1—Numerical Analysis , 2001 .

[52]  J. Thome,et al.  Flow Boiling in Horizontal Tubes. Part 1; Development of a Diabatic Two–Phase Flow Pattern Map , 1998 .

[53]  G Lorentzen.  Large heat pumps using CO2 refrigerant. , 1993 .

[54]  K Klöcker,et al.  Applying the transcritical CO2 process to a drying heat pump , 1998 .

[55]  Predrag Stojan Hrnjak,et al.  Modeling and Analysis of Gas Coolers , 1999 .

[56]  G. Lorentzen.  Revival of carbon dioxide as a refrigerant , 1994 .

[57]  Armin Hafner,et al.  Development of compact heat exchangers for CO2 air-conditioning systems☆ , 1998 .

[58]  Michael E. Paulaitis,et al.  Chemical engineering at supercritical fluid conditions , 1983 .

[59]  Jan Berghmans,et al.  Safety aspects of CO2 heat pumps , 1999 .

[60]  M. S. Bhatti.  A Critical Look at R-744 and R-134a Mobile Air Conditioning Systems , 1997 .

[61]  René Rieberer,et al.  CO2 as Working Fluid for Heat Pumps , 1998 .

[62]  Predrag Stojan Hrnjak,et al.  Effects of Distribution in Headers of Microchannel Evaporators on Transcritical CO2 Heat Pump Performance , 2000, Advanced Energy Systems.

[63]  Armin Hafner,et al.  Heat transfer and pressure drop for in-tube evaporation of CO2 , 1997 .

[64]  John E. Janssen.  The First Century of Air Conditioning , 1999 .

[65]  J. Pettersen,et al.  Heat transfer and pressure drop characteristics of supercritical carbon dioxide in microchannel tubes under cooling , 2001 .

[66]  J. Pettersen,et al.  Boiling liquid expanding vapour explosions (BLEVE) in CO2 vessels: Initial experiments , 2001 .

[67]  J. Weisman,et al.  Effects of fluid properties and pipe diameter on two-phase flow patterns in horizontal lines , 1979 .

[68]  Fumitoshi Nishiwaki,et al.  Experimental and theoretical study of hermetic CO2 scroll compressor , 2001 .

[69]  W. S. Bodinus.  The rise and fall of carbon dioxide systems , 1999 .

[70]  Horst Kruse,et al.  Expansion machines for carbon dioxide based on modified reciprocating machines , 2000 .

[71]  T. Zhao,et al.  Measurements of Heat Transfer Coefficients From Supercritical Carbon Dioxide Flowing in Horizontal Mini/Micro Channels , 2002 .

[72]  Chris Seeton,et al.  Solubility, viscosity, boundary lubrication and miscibility of CO2 and synthetic lubricants , 2001 .

[73]  Petter Nekså,et al.  Commercial refrigeration using CO2 as refrigerant : System design and experimental results. Discussion , 1998 .

[74]  William A. Wakeham,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple-Point Temperature to 1100 K at Pressures up to 800 MPa , 1998 .

[75]  Sunil S. Mehendale,et al.  Microchannel Heat Exchanger Design for Evaporator and Condenser Applications , 2003 .

[76]  R. Radermacher,et al.  Experimental investigation of the CO{sub 2} refrigeration cycle , 1999 .

[77]  W. Edward Clayton,et al.  Catastrophic failure of a liquid carbon dioxide storage vessel , 1994 .

[78]  Hans-Liudger Dienel,et al.  Heat and Cold: Mastering the Great Indoors , 1997 .

[79]  Reinhard Radermacher,et al.  Performance of vane compressor for CO2 cycle , 2001 .

[80]  Predrag Stojan Hrnjak,et al.  Single-Phase Pressure Drop Measurements in a Microchannel Heat Exchanger , 2002 .

[81]  M. Goldschmidt,et al.  Passenger car air conditioning using carbon dioxide as refrigerant. Discussion , 1998 .

[82]  M. Key.  National Institute for Occupational Safety and Health; occupational exposure to inorganic lead: request for comments and information; republication--NIOSH. Request for comments and information relevant to occupational exposure to inorganic lead. , 1997, Federal register.

[83]  E. Hihara,et al.  Boiling Heat Transfer of Carbon Dioxide in a Horizontal Tubes , 2005 .

[84]  Predrag Stojan Hrnjak,et al.  An Experimental Investigation of Transcritical Carbon Dioxide Systems for Residential Air Conditioning , 1999 .

[85]  Ahmed Kovacevic,et al.  A Twin Screw Combined Compressor And Expander For CO2 Refrigeration Systems , 2002 .

[86]  P. Domanski,et al.  Evaluation of suction-line/liquid-line heat exchange in the refrigeration cycle , 1994 .

[87]  H. Kruse,et al.  Theoretical analysis of compressing CO2 in scroll compressors. Discussion , 1998 .

[88]  Refrigerating.  ASHRAE handbook of fundamentals , 1967 .

[89]  James R. Sand,et al.  Total Environmental Warming Impact (TEWI) Calculations for Alternative Automotive Air-Conditioning Systems , 1997 .

[90]  新 雅夫,et al.  ASHRAE(American Society of Heating,Refrigerating and Air-Conditioning Engineers)大会"国際年"行事に参加して , 1975 .

[91]  Harry M. Will.  The first century of air conditioning , 1999 .

[92]  Axel Polt,et al.  Thermophysical Properties of Refrigerants , 1990 .

[93]  Predrag Stojan Hrnjak,et al.  The role of suction line heat exchanger in transcritical R744 Mobile A/C systems , 1999 .

[94]  Reinhard Radermacher,et al.  Theoretical Evaluation of Carbon Dioxide Refrigeration Cycle , 1998 .

[95]  Takeo Komatsubara,et al.  Development of the CO2 hermetic compressor , 2001 .

[96]  Bert Leisenheimer,et al.  Interaction between CO2 and elastomers with respect to permeation and explosive decompression , 2001 .

[97]  W. Wakeham,et al.  The Transport Properties of Carbon Dioxide , 1990 .

[98]  H. Kruse,et al.  Einfluss von Leckage auf die Effizienz von Verdichtern für Kohlendioxid , 1997 .

[99]  J. C. Fidler.  A history of refrigeration throughout the world , 1979 .

[100]  Man-Hoe Kim.  Performance evaluation of R-22 alternative mixtures in a breadboard heat pump with pure cross-flow condenser and counter-flow evaporator , 2002 .