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Cycle performance and heat transfer characteristics of a heat pump using R22-R142b refrigerant mixtures.

Author(s) : KIM T. S., SHIN J. Y., CHANG S. D., et al.

Summary

A heat pump system is constructed to evaluate the performance and the heat transfer characteristics. Mixtures of R22-R142b are adopted in the heat pump. The heat transfer in the evaporator and the overall performance are measured and analyzed in terms of the compositions and the flow rate of the refrigerants. The evaporator consists of counter-current concentric circular tubes. Possibility of capacity modulation by changing composition is observed without degradation of heat transfer coefficients and coefficient of performance for a fixed volumetric displacement rate. Data are given. Local heat transfer coefficients are obtained in the evaporator and shown as a function of composition for given values of mass flow rate.

Details

  • Original title: Cycle performance and heat transfer characteristics of a heat pump using R22-R142b refrigerant mixtures.
  • Record ID : 1993-0436
  • Languages: English
  • Publication date: 1992/07/14
  • Source: Source: Proc. 1992 int. Refrig. Conf., Energy Effic. New Refrig., Purdue Univ.
    vol. 1; 53-62; 14 fig.; 11 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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