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http://dx.doi.org/10.3795/KSME-B.2015.39.4.309

Analytical and Experimental Study on a Thermal Liquid Mass Flow Meter  

Kim, Taig Young (Dept. of Mechanical Engineering, Korea Polytechnic Univ.)
Kang, Chang Hoon (Dept. of Mechanical Engineering, Korea Polytechnic Univ.)
Shin, Yoon Sub (Dept. of Mechanical Engineering, Korea Polytechnic Univ.)
Kim, Tae Su (Dept. of Mechanical Engineering, Korea Polytechnic Univ.)
Choi, Seon Ho (Dept. of Mechanical Engineering, Korea Polytechnic Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.4, 2015 , pp. 309-316 More about this Journal
Abstract
Numerical analysis and experimental verification of a thermal liquid mass flow meter (LMFM) were performed. The configuration of the LMFM was the same as a gas mass flow meter (GMFM), but the opposite results in temperature difference between upstream and downstream thermistors occurred. In the case of the gas, the convection depending on the flow of thermal mass was small and comparable to the conduction through the sensor tube wall. The temperature difference was proportional to the mass flow rate due to their interaction. For the liquid flow, the convection overwhelmed the wall conduction because of the large flow of thermal mass caused by high density. The temperature difference in this case was inversely proportional to the mass flow rate. The tube diameter and heater wiring width are important design parameters, and the optimized sensor can be used to measure and control the infinitesimal liquid flow rate.
Keywords
Liquid Mass Flow Meter; Steady Heating Type; Circular Tube Convective Heat Transfer;
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