Loss coefficients of ice slurry in sudden pipe contractions

• Autorzy: Mika Ł.
• Języki publikacji: EN

Abstrakty

EN

In this paper, flow systems which are commonly used in fittings elements such as contractions in ice slurry pipelines, are experimentally investigated. In the study reported in this paper, the consideration was given to the specific features of the ice slurry flow in which the flow behaviour depends mainly on the volume fraction of solid particles. The results of the experimental studies on the flow resistance, presented herein, enabled to determine the loss coefficient during the ice slurry flow through the sudden pipe contraction. The mass fraction of solid particles in the slurry ranged from 5 to 30%. The experimental studies were conducted on a few variants of the most common contractions of copper pipes: 28/22 mm, 28/18 mm, 28/15 mm, 22/18 mm, 22/15 mm and 18/15 mm. The recommended (with respect to minimal flow resistance) range of the Reynolds number (Re about 3000-4000) for the ice slurry flow through sudden contractions was presented in this paper.

Słowa kluczowe

EN

flow resistance; Ice slurry flow; Local loss coefficient; Pressure losses in contraction

PL

opór przepływu; przepływ zawiesiny lodowej; straty ciśnienia; Współczynnik strat lokalnych

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2010
• Tom: Vol. 31, no. 3
• Strony: 78--86
• Opis fizyczny: Bibliogr. 14 poz.,Rys., tab., wykr., wz.

Twórcy

autor

Mika Ł.

• Cracow University of Technology, Division of Refrigeration and Air-Conditioning, al. Jana Pawła II 37, 31-864 Krakow, Poland,

Bibliografia

• [1] Knodel B.D., France D.M.: Pressure drop in ice-water slurries for thermal storage application. Experimental Heat Transfer, 1(1988), 265–275.
• [2] Mika L.: Experimental investigations on flow resistance of slurry ice — pressure drop in pipe reductions. Chemical Engineering 6(2009), 123–124.
• [3] Niezgoda-Żelasko B., Zalewski W.: Momentum transfer of ice slurries flows in tubes. Modeling. International Journal of Refrigeration, 2(2006), 429–436.
• [4] Niezgoda-Żelasko B.: Heat transfer and pressure drop of ice slurries flows in tubes. Publ. Krakow University of Technology, Cracow 2006.
• [5] Mika L.: Experimental investigations of the binary ice as cooling medium in indirect cooling systems. Unpublished PhD thesis, Cracow 2004.
• [6] Turian R.M., Ma T.-W., Hsu F.-L., Sung m. D.-J., Plackman G. W.: Flow of concentrated non-Newtonian slurries: Friction losses in bends, fittings, Valves and Venture meters. Int. J. Multiphase Flow, 24(1998), 2, 243–269.
• [7] IHS ESDU, Flow through sudden contractions of duct area: pressure losses and flow characteristics. ESDU 05024/2005.
• [8] Fester V., Mbiya B., Slatter P.: Energy losses of non-Newtonian fluids in sudden pipe contractions. Chemical Engineering J. 145(2008), 57–63.
• [9] Chhabra R., Richardson J.F.: Flow in the process industries. Oxford Butterworth-Heinemann, 1999.
• [10] Szewczyk H.: Correction factors in one-dimensional flow pattern of a viscous incompressible fluid in a smooth circular pipe. Chemical And Process Engineering 29(2008), 271–292.
• [11] Strzelecka K., Jeżowiecka-Kabsh K.: Coriolis coefficient in transitional and turbulent pipe flow. Environment Protection, 1(2008), 21–25.
• [12] Melinder A.: Thermophysical properties of liquid secondary refrigerants. Tables and diagrams for the refrigerant industry. IIF/IIR, Paris 1997.
• [13] Jeżowiecka-Kabsh K., Szewczyk H.: Fluid Mechanics. Publ. Wroclaw University of Technology, Wroclaw 2001.
• [14] Wędrychowicz W. Jeżowiecka-Kabsh K., Grygoriev A., Strzelecka K.: Dependence of the resistant coefficient on the Reynolds number during the flow of water through pipe sudden constriction. Environment Protection, 3(2006), 51–54