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Author Cubukcu, A.S. ♦ Buerklin, U. ♦ Urban, G.A.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2010
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Temperature measurement ♦ Thermistors ♦ Temperature sensors ♦ Heating ♦ Thermal conductivity ♦ Fluids
Abstract An enhanced flow sensor is under development at IMTEK to enable simultaneous measurement of thermal properties of a fluid and its flow velocity. AC heating is used to obtain more and detailed information on the fluid properties. Here, we present the flow characteristics of our sensor for liquids and show the influence of thermal conductivity of the fluid on the temperature amplitude at the central thermistor using calibration liquids. We further discuss the influences of fluid thermal properties and flow velocity on the phase of each thermistor signal. Experimental results suggest that phase shift on any thermistor location strongly depends on flow velocity for liquids. They also show that thermal conductivity of liquids can be determined with a minimum accuracy of 85% of their literature values using a linearly interpolated temperature amplitude characteristic of the closest thermistor to the heater.
Description Author affiliation: Department of Microsystems Engineering (IMTEK), Laboratory for Sensors, University of Freiburg, Germany (Cubukcu, A.S.; Buerklin, U.; Urban, G.A.)
ISBN 9781424481705
ISSN 19300395
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2010-11-01
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781424481699
Size (in Bytes) 887.32 kB
Page Count 5
Starting Page 2455
Ending Page 2459

Source: IEEE Xplore Digital Library