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열식 유량계의 운전온도 범위 확장을 위한 센서부 열전달 계수에 관한 연구

Title
열식 유량계의 운전온도 범위 확장을 위한 센서부 열전달 계수에 관한 연구
Other Titles
Experimental Study on Heat Transfer Coefficient of Sensor to Enlarge Driving Temperature Range of Thermal Mass Flow-Meter
Author
이도형
Keywords
Constant Current(정 전류); Thermal Mass Flow Meter(열식 질량 유량계); Heat Transfer Coefficient(열전달계수); Mass Flow(질량 유량)
Issue Date
2006-08
Publisher
한국유체기계학회
Citation
유체기계공업학회 제4회 한국유체공학학술대회 논문집, v. 2, Page. 1,133 - 1,136
Abstract
In order to measure gas flux, there are some techniques based on volume flux and mass flux. The mass flux measurement is more favored to measure correctly gas flux under the extremely - high thermal or extremely - low pressure conditions. The thermal mass flow-meter is the representative technique to measure mass flux. In designing the flow-meter, it is important to calibrate convectional thermal coefficient affected by flow velocities around sensor and thermal changes. To analyze quantitatively the convectional mechanism around cylinders in high thermal external flow , experiments are conducted through installing 40m3/min blower at 100 mm duct for high thermal gases and heater able to bring ambient gas up to 200 ℃. By using control valves at the end point of duct, we controlled fluid velocities. By installing Pt 100 sensor to the heater, fluid temperature is controlled. In this experiment, convectional coefficients around cylinders are proportional to velocity to the power of 0.45 . A and B in the correlation equation coefficients behaved independently at 105 ℃
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01172670&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/108442
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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