### Abstract

Original language | Japanese |
---|---|

Pages (from-to) | 187-197 |

Number of pages | 11 |

Journal | 日本冷凍空調学会論文集 |

Volume | 23 |

Issue number | 3 |

DOIs | |

Publication status | Published - Sep 30 2006 |

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### Cite this

*日本冷凍空調学会論文集*,

*23*(3), 187-197. https://doi.org/10.11322/tjsrae.23.187

**二成分混合冷媒のプレートフィン凝縮器内での伝熱特性の予測計算法.** / 屋良朝康; 小山繁.

Research output: Contribution to journal › Article

*日本冷凍空調学会論文集*, vol. 23, no. 3, pp. 187-197. https://doi.org/10.11322/tjsrae.23.187

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TY - JOUR

T1 - 二成分混合冷媒のプレートフィン凝縮器内での伝熱特性の予測計算法

AU - 屋良, 朝康

AU - 小山, 繁

PY - 2006/9/30

Y1 - 2006/9/30

N2 - The heat transfer characteristics of binary refrigerant mixtures in a plate-fin condenser are experimentally investigated using a vapor compression heat transformer, in which binary refrigerant mixtures of R 134a/ R 123 are used as the working fluid and water is used as both heat sink and source. Pure refrigerants of R 22 and R 134a are also tested as the working fluid. The experimental ranges of heat flux and mass velocity are from 2 to 20 kW/m<Sup>2 and from 50 to 100 kg/m<Sup>2s, respectively. The heat transfer characteristics of the condensation and vapor single-phase flow of pure and mixed refrigerants are discussed, and empirical correlation equations of the condensate heat transfer and vapor single-phase heat transfer are proposed. The correlation equation of water-side heat transfer is also presented. Combining these correlation equations with a correlation equation of vapor mass transfer based on the Chilton-Colburn analogy, a prediction model for condensation of the binary refrigerant mixtures in a plate-fin heat exchanger is developed based on the assumption that the phase equilibrium is only established at the vapor-liquid interface. The calculation results for the pure and mixed refrigerants agree well with the present experimental data. The mass transfer characteristics are also revealed from the calculation results.

AB - The heat transfer characteristics of binary refrigerant mixtures in a plate-fin condenser are experimentally investigated using a vapor compression heat transformer, in which binary refrigerant mixtures of R 134a/ R 123 are used as the working fluid and water is used as both heat sink and source. Pure refrigerants of R 22 and R 134a are also tested as the working fluid. The experimental ranges of heat flux and mass velocity are from 2 to 20 kW/m<Sup>2 and from 50 to 100 kg/m<Sup>2s, respectively. The heat transfer characteristics of the condensation and vapor single-phase flow of pure and mixed refrigerants are discussed, and empirical correlation equations of the condensate heat transfer and vapor single-phase heat transfer are proposed. The correlation equation of water-side heat transfer is also presented. Combining these correlation equations with a correlation equation of vapor mass transfer based on the Chilton-Colburn analogy, a prediction model for condensation of the binary refrigerant mixtures in a plate-fin heat exchanger is developed based on the assumption that the phase equilibrium is only established at the vapor-liquid interface. The calculation results for the pure and mixed refrigerants agree well with the present experimental data. The mass transfer characteristics are also revealed from the calculation results.

U2 - 10.11322/tjsrae.23.187

DO - 10.11322/tjsrae.23.187

M3 - 記事

VL - 23

SP - 187

EP - 197

JO - 日本冷凍空調学会論文集

JF - 日本冷凍空調学会論文集

SN - 1344-4905

IS - 3

ER -