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Development and testing of a multi-transducer system for measuring height of condensed water in steam pipes with steady-state and turbulent flow conditions

[+] Author and Article Information
Shyh-shiuh Lih

Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109-8099
lih@jpl.nasa.gov

Hyeong Jae Lee

Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109-8099
hyeong.Jae.Lee@jpl.nasa.gov

Yoseph Bar-cohen

Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109-8099
yoseph.bar-cohen@jpl.nasa.gov

Mircea Badescu

Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109-8099
mircea.badescu@jpl.nasa.gov

1Corresponding author.

ASME doi:10.1115/1.4040112 History: Received August 22, 2017; Revised April 25, 2018

Abstract

A system consisting of a multiplexer and multiple ultrasonic probes was developed for in-situ monitoring of the water condensation height in steam pipes under steady-state and turbulent flow conditions. The measurement method, the signal processing techniques, the experimental setup, and the test results are presented in this paper. The feasibility and efficiency of the developed multi transducers and signal processing algorithms were demonstrated. The measured water height and wave pattern in dynamic surface conditions inside the pipe were verified through the snapshot of the recorded video images. The developed methodology built the framework for the use of multiple transducers array ultrasonic system for practical application to in-situ monitor the water height in steam pipes.

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