プロパン·ブタン系自然混合冷媒の向流式二重管擬縮器内での伝熱特性

Translated title of the contribution: Heat Transfer Characteristics of Natural Refrigerant Mixitures(Propane/n-Butane,Propane/i-Butane) in a Counter Flow Type Double-tube Condenser

小山 繁, 李 相武, 石橋 晃

Research output: Contribution to journalArticle

Abstract

This paper deals with the heat exchange performance prediction of a counter flow type double-tube condenser for natural binary refrigerant mixtures composed of Propane/n-Butane or Propane/i-Butane. The local characteristics of heat transfer, mass transfer and pressure drop are calculated using a prediction method developed by the authors. The total pressure drop and the overall heat transfer coefficient are also evaluated on various heat exchange conditions. The calculated results of the natural refrigerant mixtures are compared with those of pure refrigerant HCFC22. In conclusion, natural binary refrigerant mixtures composed of Propane/n-Butane or Propane/i-Butane are appropriate candidates to replace HCFC22 from the viewpoint of heat transfer characteristics.
Translated title of the contributionHeat Transfer Characteristics of Natural Refrigerant Mixitures(Propane/n-Butane,Propane/i-Butane) in a Counter Flow Type Double-tube Condenser
Original languageJapanese
Pages (from-to)253-261
Number of pages9
Journal日本冷凍空調学会論文集
Volume18
Issue number3
DOIs
Publication statusPublished - 2001
Externally publishedYes

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