대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2007년도 동계학술발표대회 논문집
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- Pages.191-196
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- 2007
봉다발 부수로의 단상 국부열전달 계수 측정기법에 관한 연구
Measurement Technique for Single Phase Local Heat Transfer Coefficients of Subchannels in a Rod Bundle using a Copper Sensor
- Seo, Jeong-Sik (Graduated school, Korea University) ;
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Choi, Young-Don
(Graduated school, Korea University) ;
- Bea, Kyong-Kuen (LG micron 407) ;
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An, Jeong-Soo
(Department of Mechanical Engineering, Korea University)
- 발행 : 2007.11.30
초록
This paper presents the measuring technique for local heat transfer coefficients using a copper sensor in a rod bundle with mixing vanes. A copper sensor consists of a cartridge heater and four pieces of thermocouple. The Heater is located at the center of the copper sensor and thermocouples measure the surface temperature of the copper sensor. Unheated copper sensor and heated copper sensor are able to measure the local heat transfer coefficient at the position where the heated copper sensor is installed. However the entire region of a rod bundle is actually not heated, the decay of local heat transfer coefficients measured represents overestimated value rather than an actual value. The calibration curve for local heat transfer coefficients is presented using the correction factor calculated by CFD.
키워드