scholarly journals Test series C 1: an experimental determination of the pressure loss coefficients for the inner reflector--outer reflector annulus using air

1964 ◽  
Author(s):  
V.R. Amatangelo
Keyword(s):  
Experimental Determination ◽  
Pressure Loss ◽  
Test Series ◽  
Loss Coefficients

The determination of pipe contraction pressure loss coefficients for incompressible turbulent flow

1987 ◽  
Vol 8 (2) ◽  
pp. 111-118 ◽  
Author(s):  
P.R. Bullen ◽  
D.J. Cheeseman ◽  
L.A. Hussain ◽  
A.E. Ruffellt
Keyword(s):  
Turbulent Flow ◽  
Pressure Loss ◽  
Loss Coefficients

scholarly journals Hydraulic characteristic of selected installation valves installed on various pipes materials

2018 ◽  
Vol 59 ◽  
pp. 00023
Author(s):  
Krystyna Poręba ◽  
Weronika Kowalczyk ◽  
Marcin K. Widomski ◽  
Anna Musz-Pomorska
Keyword(s):  
Flow Rate ◽  
Pressure Loss ◽  
Water Flow Rate ◽  
Operating Conditions ◽  
Water Control ◽  
Mean Values ◽  
Pressure Losses ◽  
Loss Coefficients ◽  
Globe Valve

Presented studies covered determination of minor pressure losses and values of minor loss coefficients for two selected installation valves: water control globe valve and angle valve, both DN 15. The tested valves were installed on three pipes, including PP 20x3.4 mm, PEX-Al-PEX 16x2.0 mm and Cu 15x1.0 mm. In order to reflect the real operating conditions of the angle valve, the elastic PVC pipe was used. Our researches were performed on the laboratory installation, for the variable flow rate. The obtained results of laboratory studies showed the clear dependence between minor pressure loss and minor loss coefficients of studied valves, and water flow rate (Reynolds number), degree of valves’ closure and, in some cases, manner of valves installation and material of pipes. The greatest values of minor pressure loss coefficients, of mean values relevantly statistically grater, were determined for the tested valves installed on the PEX-Al-PEX pipeline.

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