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Title: Design And Uncertainty Estimation Of A Calibrator For The Feedwater Flowmeter At High Reynolds Number
Author: Ki Han Nam Kye Hyeon Ryu
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: Calibration system at high Reynolds number flow was designed and fabricated, for calibrating the flowmeter used for fee dwater flow measurement in a nuclear power plant. Conditions of the feedwater flow are under 230 C of t he temperature and 8 M Pa of the pressure . Four ultrasonic flowmeters, which have 3000 m 3 /h maximum flowrate respectively, were used as the master flowmeter for calibrating the feedwater flowmeter . We have achieved the maximum flowrate 12000 m 3 /h with parallelly connected four ultrasonic flowmeters. To get the high Reynolds number flow, the temperature of the working fluid was controlled up t o 90 C . Then we can get Reynolds number 2.5x10 7 , which was coincide with that of Advance Power Reactor 1400 MW (APR 1400 ) nuclear power plant model.

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