Heat Pump System with R 22/R 114 Mixtures as Working Fluids: (2nd Report, Experiment on Double-Tube Evaporator and Condenser with Grooved Tubes)

Hiroshi Takamatsu, Shigeru Koyama, Yasuyuki Ikegami, Tomoyasu Yara, Minoru Kitamura, Tetsu Fujii

研究成果: ジャーナルへの寄稿記事

抄録

The performance of a vapor compression heat pump system is tested using R22/R114 mixtures as the working fluid. Double pipe heat exchangers, where the refrigerant flows inside the inner tube with grooved internal surface and water flows countercurrently in the outer annulus, are used for the condenser and evaporator. Experimental results are compared with those for the same system with a smooth tube condenser and the evaporator presented before. The effect of the superheating of the refrigerant at the exit of the evaporator on COP is also discussed. A trial calculation based on the experimental results shows that the COP of the mixture becomes larger than that of the pure refrigerant in the case of a large change in the water temperature only if the heat transfer surface area is large enough and the superheating of the refrigerant is quite small at the exit of the evaporator.

元の言語英語
ページ(範囲)2377-2382
ページ数6
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
57
発行部数539
DOI
出版物ステータス出版済み - 1 1 1991

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heat pumps
Heat pump systems
evaporators
working fluids
refrigerants
condensers
Evaporators
Refrigerants
tubes
superheating
Fluids
Experiments
Condenser tubes
water temperature
water flow
annuli
heat exchangers
Heat exchangers
Flow of fluids
Water

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

これを引用

Heat Pump System with R 22/R 114 Mixtures as Working Fluids : (2nd Report, Experiment on Double-Tube Evaporator and Condenser with Grooved Tubes). / Takamatsu, Hiroshi; Koyama, Shigeru; Ikegami, Yasuyuki; Yara, Tomoyasu; Kitamura, Minoru; Fujii, Tetsu.

:: Transactions of the Japan Society of Mechanical Engineers Series B, 巻 57, 番号 539, 01.01.1991, p. 2377-2382.

研究成果: ジャーナルへの寄稿記事

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