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INVESTIGATION ON CFC DIFFUSIVITY WITH AN IMPROVED DOUBLE VOLUME METHOD.

Author(s) : DANG K., WU Y.

Summary

SOME HEAT TRANSFER EXPERIMENTS HAVE SHOWN THAT THE CFC MIXTURES HAVE SMALLER HEAT TRANSFER COEFFICIENTS THAN THE ONES OF PURE COMPONENTS DUE TO THE DIFFUSION RESISTANCE IN EVAPORATING AND CONDENSING PROCESSES. IN THE PAPER AN IMPROVED DOUBLE VOLUME METHOD HAS BEEN DEVELOPED TO INVESTIGATE DIFFUSION COEFFICIENTS FOR BINARY MIXTURES. CHROMATOGRAPH ANALYSIS SHOWS THAT THE DIFFUSION COEFFICIENTS DAB OBTAINED ARE ABOUT 30% LESS THAN THE ONES CALCULATED FROM THE FORMULAS PUBLISHED BEFORE, IN SOME CASES, EVEN LESS THAN 100%. THE CFCS INVESTIGATED ARE R22, R142B, R152A, R12, R114, R115, ETC.

Details

  • Original title: INVESTIGATION ON CFC DIFFUSIVITY WITH AN IMPROVED DOUBLE VOLUME METHOD.
  • Record ID : 1991-1078
  • Languages: English
  • Publication date: 1990/07/17
  • Source: Source: USNC-IIR/Proc. 1990 Refrig. Conf., Purdue Univ./ASHRAE, Purdue CFC Conf./Purdue Univ., Ray W. Herrick Lab., Sch. mech. Eng.
    251-255; 3 fig.; 3 tabl.; 5 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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