リングヒータを用いた管外式流量計に関する数値シミュレーション

抄録

A clamp-on type flowmeter for steam and air, which does not require pipe-cutting for installation, is needed for diagnosing performance and saving energy in facilities such as factories and power plants. Therefore, in our previous study we devised a heater method for measuring steam and air flow, in which a circumferential heater was attached to the outside of a pipe and then the axial temperature distribution on the outside of the pipe was measured by thermocouples. Steam velocity was analyzed on the basis of the temperature distribution in the pipe axial direction, considering heat transfer inside the pipe and thermal conductivity in the steel pipe-wall. In this study, simulation was performed on the operation of the steam flow meter and a simple method for the prediction of steam velocity with the flow meter was discussed.