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Type: Artigo de periódico
Title: A procedure for correcting for the effect of fluid flow temperature variation on the response of capacitive void fraction meters
Author: dos Reis, E
Goldstein, L
Abstract: In gas-liquid flows through test loops, the fluid temperature increases, causing a change in the dielectric properties, mainly of the liquid component, which interferes with the response of capacitive void fraction meters. This phenomenon causes, for example, deviations of about 4 % in the meter response for each 10 degrees C variation of temperature in the air-water flow. In this work, a simple procedure is proposed for correcting for the response of capacitive void fraction meters being affected due to the flow temperature being different from the calibration temperature. Static and dynamic tests were performed on a capacitive void fraction measuring system with double-helix electrodes. The results showed the effectiveness of the proposed compensation technique, which allowed a significant reduction of the measurement deviations. (c) 2005 Elsevier Ltd. All rights reserved.
Subject: void fraction
capacitance meter
dielectric permittivity
error correction
Country: Inglaterra
Editor: Elsevier Sci Ltd
Rights: fechado
Identifier DOI: 10.1016/j.flowmeasinst.2005.01.001
Date Issue: 2005
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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