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THERMAL FLOWMETER STUDY FOR LIQUIDS AND COMPLEX FLUIDS.

Author(s) : GSCHWIND M.

Summary

THE PRINCIPLE OF THE DEVICE CONSISTS IN MEASURING THE INCREASE OF TEMPERATURE DOWNSTREAM FROM AN HEATING RING PROVIDING A CONSTANT ELECTRICAL POWER IN THE FORM OF A PULSE DURING A SPECIFIED PERIOD. AN EXPERIMENTAL MODEL IS PROPOSED, WHICH CORRELATES THE FLOW RATE IN THE PIPE TO BOTH THE INLET WATER TEMPERATURE AND THE TEMPERATURE INCREASE MEASURED DOWNSTREAM FROM THE RING. AS FAR AS THE TESTED COPPER PIPE IS CONCERNED, THE CORRELATION LEADS TO ACCURATE FLOW DETERMINATIONS FOR FLOW RATES FROM 200 TO 800 L/H. OUTSIDE THIS RANGE, THE PERCENTAGE ERRORS TEND TO INCREASE TOWARDS A VALUE OF 10%. FOR FLOW RATES HIGHER THAN 1,000 L/H, LONGER HEATING DURATIONS ARE REQUIRED TO IMPROVE THE ACCURACY OF THE PROTOTYPE.

Details

  • Original title: THERMAL FLOWMETER STUDY FOR LIQUIDS AND COMPLEX FLUIDS.
  • Record ID : 1990-1391
  • Languages: English
  • Publication date: 1989/08/01
  • Source: Source: CLIMA 2000, Sarajevo
    vol. 5; 235-240; 5 fig.; 6 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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