音速測定による混合冷媒の気相域における熱力学性質に関する研究

• 宝積 勉

  東京工業大学工学部機械科学科

• 佐藤 春樹

  慶慮義塾大学理工学部システムデザイン工学科

• 渡辺 康一

  慶慮義塾大学理工学部システムデザイン工学科

書誌事項

タイトル別名

• Determination of Thermodynamic Properties from Speed-of-Sound Measurements for Gaseous Refrigerant Mixtures
• オンソク ソクテイ ニ ヨル コンゴウレイバイ ノ キソウイキ ニ オケル ネツリキガク セイシツ ニ カンスル ケンキュウ

抄録

This paper proposes a procedure on the thermodynamically consistent determination of virial coefficients from speed-of-sound measurements. Using the speed-of-sound values for gaseous Difluoromethane (R-32) +Pentafluoroethane (R-125), R -32+ 1, 1, 1, 2 - tetrafluoroethane (R-134a), R125/134a and R-32/125/134a which have already been reported in the previous paper, the second virial coefficients of R-32/125, R -32/134a, R-125/134a and R-32/125/134a were determined by means of thermodynamic relation among the virial coefficients of two different virial equations of state with respect to pressure and density. The present virial equation of state regarding density expansion can represent not only the speed-of-sound values but also the PρT-data for R-32/125, R -32/134a, R -125/134a and R-32/125/134a. The deviation of the speed-of-sound data from the virial equation of state is about±100ppm.And the deviation of the PρT-measurements by Kleemiss and Tillner-Roth (1997) from the virial equation of state against density is about ±0.l%. The behavior of the second virial coefficient is shown at the available compositions.

収録刊行物

• 日本冷凍空調学会論文集

  日本冷凍空調学会論文集 16 (1), 89-96, 1999

  公益社団法人 日本冷凍空調学会

キーワード

• HFCs
• Refrigerant mixtures
• Speed of sound
• Virial coefficient
• Virial equation of state

詳細情報

• CRID: 1390282679643610240
• NII論文ID: 10002715132
• NII書誌ID: AA11125910
• DOI: 10.11322/tjsrae.16.89
• ISSN: 2185789X
• ISSN: 13444905
• NDL書誌ID: 4844857
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4844857
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可