1993 Fiscal Year Annual Research Report

次世代空調システム用作動流体に関する熱力学的研究

Research Project

Project/Area Number	04402025
Research Institution	Keio University
Principal Investigator	渡部康一慶應義塾大学, 理工学部, 教授 (40051487)
Co-Investigator(Kenkyū-buntansha)	佐藤春樹慶應義塾大学, 理工学部, 助教授 (70137983)
Keywords	ヒートポンプ / 冷凍サイクル / 代替フロン物質 / 作動流体 / 熱物性 / 熱力学性質 / 冷凍 / 混合冷媒
Research Abstract	地球規模の環境問題の深刻化から今まで代替フロン物質として考えられてきた水素分子を含むフロン物質(HCFC)類まで規制されることになった。本研究ではHCFC類の代替物質を対象としてその熱物性値情報を明らかにすることを研究目的とした。特に,HCFC-22は空調システムの作動流体として広く用いられており,新たな空調システム用作動流体の開発は緊急の課題である。次世代空調システム用作動流体としてもっとも適する物質を検討した結果,ジフルオロメタン(HFC-32)およびその混合物であるとの結論に至り,平成4年度に引き続き,本年度は以下の成果を収めることができた。 1.ジフルオロメタンHFC-32の音速および液体域の比熱を現有の球共鳴法音速測定装置およびフローカロリーメーターを用いて測定し,HFC-32の理想気体状態の定圧比熱,ビリアル係数,液相の定圧比熱を明らかにすることができた。 2.ペンタフルオロエタンHFC-125の臨界点および飽和蒸気圧力,飽和液体密度を,現有のメニスカス観察臨界定数・気液平衡密度測定装置および磁気式密度計により明らかにすることができた。 3.HFC-32を一成分とする混合物のひとつとして,最も実用化するときに問題が小さい,すなわち地球温暖化係数も大きくなく,可燃性でもないHFC-134aとの組み合わせを考え,HFC-32+HFC-134aの圧力・体積・温度・組成の相互関係(PVT×性質)を気相域において,既存の等容法測定装置を用いて明らかにした。以上当初予定していたとおりの研究成果を得ることができた。

Research Products
(14 results)

All Other

All Publications (14 results)

[Publications] Watanabe,K.: "Recent Progress on Thermodynamic Properties Research on CFC and HCFC Alternative Refrigerants at Keio University,Yokohama,Japan" 4th lnternational Energy Agency Heat Pump Conference,Maastricht,The Netherlands. (1993)
[Publications] Sato,T.: "Thermodynamic Property evaluation for a binary HFC-32+HFC-134a refrigerant based on experimental PVT×data" ASME Winter Annual Meeting,New Orleans,Paper No.93-WA/HT-25. 1-12 (1993)
[Publications] Tamatsu,T.: "An Equation of State for 1,1-difluoroethane(HFC-152a)" 1.J.Refrigeration. Vol.16. 347-352 (1993)
[Publications] Watanabe,K.: "Recent Progress on Thermodynamic Property Studies on Alternatives to replace HCFC-22" lnt.Cont.Energy Efficiency in Refrigeration and Global Warming lmpact,Ghent,Belgium,May 12-14. (1993)
[Publications] Hozumi,T.: "Sound-velocity Measurements for HFC-134a and HFC-152a with a Spherical Resonator" lnt.Thermophys.Vol.14. 739- (1993)
[Publications] Nakagawa,S.: "lsobaric-Heat Capacity for Liquid 1-Chloro-1,1-difluoroethane and 1,1-Difluoroethane" J.Chem.Eng.Data. Vol.38. 70-74 (1993)
[Publications] Tatoh,J.: "Measurements of the Vapor-Liquid Coexistence Curve in the Critical Region and the Critical Parameters of 1,,2,2-Tetrafluoroethane" J.Chem.Eng.Data. Vol.38. 116-118 (1993)
[Publications] Qian,Z.-Y.: "Compressibility factors and virial coefficients of difluoromethane(HFC-32)determined by Burnett method" JSME lnt.J.Vol.36. 665-670 (1993)
[Publications] Widiatmo,J.V.: "Vapor pressures and saturated-liquid density of HFCs" Proc.of 1993 JAR Annual Conference. 1-4 (1993)
[Publications] Kuwabara,S.: "Saturated liquid and vapor densities and critical parameters of HFCs" Proc.of 1993 JAR Conference. 5-8 (1993)
[Publications] Hozumi,T.: "ldeal-gas specific-haet for four different HFCs" Proc.of 1993 JAR Annual Conference. 9-12 (1993)
[Publications] Sato,T.: "Thermodynamic properites of HFC-32+HFC-134a in the gaseous phase" Proc.of 1993 JAR Annual Conference. 17-20 (1993)
[Publications] Hozumi,T.: "Sound-Velocity Measurements in Gaseous HFC-32" Proc.of the 14th Japan Symp.on Thermophys.Prop.291-294 (1993)
[Publications] Kubota,M.: "Vapor pressure equations for new refrigerants(seven HFCs)" Proc.of the 27th Japanese Joint Conference on Air-conditioning and Refrigeration. 173-176 (1993)

1993 Fiscal Year Annual Research Report

次世代空調システム用作動流体に関する熱力学的研究

Principal Investigator

渡部 康一 慶應義塾大学, 理工学部, 教授 (40051487)

Research Products

[Publications] Watanabe,K.: "Recent Progress on Thermodynamic Properties Research on CFC and HCFC Alternative Refrigerants at Keio University,Yokohama,Japan" 4th lnternational Energy Agency Heat Pump Conference,Maastricht,The Netherlands. (1993)

[Publications] Sato,T.: "Thermodynamic Property evaluation for a binary HFC-32+HFC-134a refrigerant based on experimental PVT×data" ASME Winter Annual Meeting,New Orleans,Paper No.93-WA/HT-25. 1-12 (1993)

[Publications] Tamatsu,T.: "An Equation of State for 1,1-difluoroethane(HFC-152a)" 1.J.Refrigeration. Vol.16. 347-352 (1993)

[Publications] Watanabe,K.: "Recent Progress on Thermodynamic Property Studies on Alternatives to replace HCFC-22" lnt.Cont.Energy Efficiency in Refrigeration and Global Warming lmpact,Ghent,Belgium,May 12-14. (1993)

[Publications] Hozumi,T.: "Sound-velocity Measurements for HFC-134a and HFC-152a with a Spherical Resonator" lnt.Thermophys.Vol.14. 739- (1993)

[Publications] Nakagawa,S.: "lsobaric-Heat Capacity for Liquid 1-Chloro-1,1-difluoroethane and 1,1-Difluoroethane" J.Chem.Eng.Data. Vol.38. 70-74 (1993)

[Publications] Tatoh,J.: "Measurements of the Vapor-Liquid Coexistence Curve in the Critical Region and the Critical Parameters of 1,,2,2-Tetrafluoroethane" J.Chem.Eng.Data. Vol.38. 116-118 (1993)

[Publications] Qian,Z.-Y.: "Compressibility factors and virial coefficients of difluoromethane(HFC-32)determined by Burnett method" JSME lnt.J.Vol.36. 665-670 (1993)

[Publications] Widiatmo,J.V.: "Vapor pressures and saturated-liquid density of HFCs" Proc.of 1993 JAR Annual Conference. 1-4 (1993)

[Publications] Kuwabara,S.: "Saturated liquid and vapor densities and critical parameters of HFCs" Proc.of 1993 JAR Conference. 5-8 (1993)

[Publications] Hozumi,T.: "ldeal-gas specific-haet for four different HFCs" Proc.of 1993 JAR Annual Conference. 9-12 (1993)

[Publications] Sato,T.: "Thermodynamic properites of HFC-32+HFC-134a in the gaseous phase" Proc.of 1993 JAR Annual Conference. 17-20 (1993)

[Publications] Hozumi,T.: "Sound-Velocity Measurements in Gaseous HFC-32" Proc.of the 14th Japan Symp.on Thermophys.Prop.291-294 (1993)

[Publications] Kubota,M.: "Vapor pressure equations for new refrigerants(seven HFCs)" Proc.of the 27th Japanese Joint Conference on Air-conditioning and Refrigeration. 173-176 (1993)

渡部康一慶應義塾大学, 理工学部, 教授 (40051487)