Measurements of Void Fraction and Flow Rate of LNG Flow
The paper describes the sensor and methodology to measure the void fraction and flow rate of liquefied natural gas two-phase flow. The design and calibration procedure of high frequency sensors as well as sensitivity and accuracy are discussed. High frequency method is used for void fraction measurements. Flow rate is measured by cross-correlation technique. The automatic measuring system to control two-phase cryogenic flows is described. Application of the system for testing fuel pumps of aircraft using cryogens as propellants is demonstrated. Results of calibration of the system on liquefied natural gas flow are presented.
KeywordsDielectric Constant Void Fraction Fuel Pump Automatic Measuring System Ground Facility
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- 1.A.M. Arkharov et al., Measurement of helium density and vapor content by means of microwave resonators, Instruments and Experimental Techniques, Vol 31 1:174 (1988).Google Scholar
- 2.A.G. Grechko and A.M. Arkharov, Use of radio frequency sensors for measurement parameters of cryogenic vapor-liquid flows, Khimicheskoe i Neftekhimicheskoe Mashinostroenie, 4:14 (1988) (in Russian).Google Scholar
- 3.A.M. Arkharov et al., Method for measurement of flowrate of vapor-liquid flows, Authors certificate SU No 1419271, Invention Bulletin No 31 (1988) (in Russian).Google Scholar
- 4.A.M. Arkharov et al., Flowmeter sensor for two-phase cryoproducts, Authors certificate SU No 1839234, Invention Bulletin, N37–38 (1993) (in Russian).Google Scholar
- 5.A.M. Arkharov et al., Apparatus for measurement of void fraction in cryogenic flows, Patent N 2001391 Russia, Invention Bulletin, N37–38 (1993) (in Russian).Google Scholar
- 6.A.M. Arkharov et al., “High frequency resonance sensors for single- and two-phase cryoproducts,” Proc. 19th International Congress of Refrigeration, The Hague, The Netherlands, IIIb.1030 (1995).Google Scholar
- 7.A.M. Arkharov et al., Helium density monitoring system for QUELL experiment, Vestnik of Moscow State Technical University (1996) (in Russian).Google Scholar
- 10.W.M. Haynes and B.A. Younglove, Dielectric constants of saturated liquid propane, isobutane, and normal butane, in “Advances in Cryogenic Engineering,” Vol.27, Plenum Press, New York (1982).Google Scholar
- 11.A.M. Arkharov et al., Static method for calibration of microwave sensors, Instruments and Experimental Techniques, Vol 35 1:170 (1992).Google Scholar
- 12.A.M. Arkharov et al., Calibration of the vapor content HF sensors for cryogenic flows, Khimicheskoe i Neftekhimicheskoe Mashinostroenie, 6:27 (1992) (in Russian).Google Scholar
- 16.R.D. McCarty, J. Hord and H.M. Roder, Selected properties of Hydrogen, National Bureau of Standards, Report MN 168(1981).Google Scholar
- 18.M.S. Beck and A. Plaskowski. “Cross Correlation Flowmeters — Their Design and Application,” Adam Hilger, Bristol (1987).Google Scholar