Progress Report on APMP. M Progress Report on APMP.M.FF-K2 Hydrocarbon Liquid Flow (bilateral comparison) Chun-Min Su CMS/ITRI, Chinese Taipei Dec. 5, 2011 reported in APMP 2011 TCFF Meeting Kobe, Japan

Introduction Pilot Laboratory: CMS, Chinese Taipei Participant laboratory: VMI, Vietnam Overview of comparison Transfer standard: 4" PD meter (Kral) Test flowrates: (5 to 30) L/s, 11 flow points Original Cardinal point: Re= 76 150 New comparison point: Re= 120 000 Comparison parameter: Strouhal No. (temperature-compensated) Strouhal = K × D3

Transfer standard package 1- 4" 500 mm long F- Cone type insert filter 2- 4" 300 mm long 3- Kral Meter 450 mm long 4- 4" 500 mm long 5- pick-up sensor (BEG43) Direction of flow

Status of the two labs. CMS VMI Flow standard Weighing scale (1.5, 6) ton Volumetric tank (2000, 5000,10000) L U95 (including DUT) 0.049 % 0.088 % Fluid Solvent oil Kerosene Viscosity (cSt) 4.26 @ 20 ℃ 1.55 @ 20 ℃ Temperature controlled Yes No (1000 m3 storage tank) Actual test temperature (℃) 20 ± 0.3 35 ± 0.3 29.0 to 36.4

Schedule Progress NMI Date Comparison test CMS, VMI Jun. to Dec., 2009 Viscosity effect test NMIJ Feb. to Mar., 2010 Draft A v.1 CMS Aug. 2010 Progress report to APMP TCFF Nov. 2010 Draft A v.2 Aug. 2011 Draft A Review by TCFF Chair VMI Sep. 2011 Draft B Nov. 2011

Test results – K-factor

Test results – Strouhal No. The TS lost its typical Re-dependent characteristic at Re < ~ 120 000 when tested at VMI due to low oil viscosity and associated lower flow rate.

Viscosity effect test Dependency of viscosity and temperature was not significant.

Comparison basis modified Original New Re 76 150 120 000 No. of Tests 6 2 Flowrate (L/s) CMS: 26 VMI: 7.5 CMS: 24 L/s VMI: 12.5 L/s Temperature (℃) CMS: 20 VMI: 33.7 CMS: 34.9 VMI: 29.3 Viscosity (mm2/s) CMS: 4.26 VMI: 1.24 CMS: 3.02 VMI: 1.31

Test results for comparison VMI compared to CMS (at different temp., no correction applied) Parameter: Strouhal No. @ Re=120 000 NMI Calibration Result Strouhal no. Expanded Uncertainty Ui CMS 18.0023 (34.76 ℃) 0.049 % VMI 17.9973 (29.30 ℃) 0.088 %

Comparison results En value Degrees of Equivalence of VMI Relative to CMS En value [-0.028 %] [0.10 %]

Concluding Remarks In this APMP.M.FF-K2 comparison CMS tested the TS with solvent oil @ 20 ℃ and 35 ℃ (Comparison point @ 34.9 ℃) VMI tested the TS with kerosene @ 29.0 ℃ to 36.4 ℃ (Comparison point @ 29.3 ℃) NMIJ was invited to perform tests with kerosene and light oil @ 20 ℃ and 35 ℃ Comparison was made without viscosity correction The En value of VMI at Re=120000 is 0.28 Operation condition of CMS is quite different from that in CCM-WGFF key comparison. No linkage to KCRV was provided. Slope of the regression line at 35 ℃ is positive but small, maybe due to measurement error.

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