• 388 Downloads • Abstract A new averaging Pitot tube flow meter that has a shape similar to an Annubar® type flow meter was designed and its flow rate characteristic was evaluated. The air temperature supplied to the developed flow meter was maintained at a constant by controlling electric power supply to an electric heater during the calibration. Two kinds of differential pressure measured at the flow meter were used in calculating the H parameters, which represent characteristics of the developed flow meter. One H parameter (H ΔP1) which was newly proposed in this research was calculated based on the difference between upstream pressure (stagnation pressure) at the flow meter and static pressure of the measured flow. The differential pressure is equivalent to the dynamic pressure of the flow. The other H parameter (H ΔP2) which is used in a typical Annubar® type flow meter was calculated based on the difference between upstream and downstream pressure at the developed flow meters.

Download Lagu Terry Butiran Debu Stafaband. Torbar Averaging pitot tubes Economical flow metering solutions for gases, liquids. Design based on the classical pitot tube concept of fluid flow.

Relationship curves between the two H parameters and the mass flow rate at the developed flow meter were obtained. The curves based on the H ΔP2 parameter, which uses the difference between up and down stream pressure, show different gradients for varying the controlled air temperature.

However, the other curve, based on the other H ΔP1 parameter, which uses the dynamic pressure, can be represented by one linear curve even with varying air temperature. This paper was recommended for publication in revised form by Associate Editor Jun Sang Park Dae-San Oh is an undergraduate student of department of automotive engineering at Seoul National University of Science and Technology. His research interests are flow measurements and control of fuel injection system in automotive.

Scott Adams The Dilbert Principle Download Games. He is also interested in mini Baja. Choong-Hoon Lee received his BS (1985), MS (1987), and Ph.D degrees (1996) in Mechanical Engineering from Seoul National University. He worked as a diesel engine development engineer for Daewoo Heavy Industry for six years. He was a visiting research fellow at the Engine Research Center at the University of Wisconsin-Madison in 1997. He has worked in the Department of Automotive Engineering at Seoul National University of Technology as a professor since 2000. His research interests are the measurement and control of sprays and flows and HILS for predicting automotive performance.