PROPERTIES OF OIL-REFRIGERANT LIQUID MIXTURES WITH APPLICATIONS TO OIL CONCENTRATION MEASUREMENT: PART I - THERMOPHYSICAL AND TRANSPORT PROPERTIES.
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An investigation of thermophysical and transport properties of oil-refrigerant liquid mixtures as possible bases for a real-time measurement of oil concentration is presented. This paper contains brief results of a literature survey encompassing several properties of oil-refrigerant mixtures. Descriptions of experimental procedures and results from laboratory measurements of liquid density, acoustic velocity, and viscosity in mixtures of refrigeration oils and R-113 are presented. Also included is a discussion of instrumentation that could be adapted to oil concentration measurement. Potentially successful oil concentration sensors, based on density measurement and acoustic velocity measurement, have been recommended for continued development.
author list (cited authors)
Baustian, J. J., Pate, M. B., & Bergles, A. E.