한국신재생에너지학회:학술대회논문집
- 2006.06a
- /
- Pages.451-454
- /
- 2006
Fiber optic distribution temperature sensing in a borehole heat exchanger system
광섬유 센서를 이용한 지중 열교환기 시스템 온도 모니터링
- Shim, Byoung-Ohan (Korea Institute of Geoscience and Mineral Resources, Groundwater & Geothermal Division) ;
- Lee, Young-Min (Korea Institute of Geoscience and Mineral Resources, Groundwater & Geothermal Division) ;
- Kim, Hyoung-Chan (Korea Institute of Geoscience and Mineral Resources, Groundwater & Geothermal Division) ;
- Song, Yoon-Ho (Korea Institute of Geoscience and Mineral Resources, Groundwater & Geothermal Division)
- Published : 2006.06.22
Abstract
Fiber optic distributed temperature sensing and thermal line sensor are applied in an observation borehole and a loom deep borehole heat exchanger. For the case of permanently installed system fiber optic DTS is very useful. By comparing with TLS, fiber optic DTS shows good accuracy and reliability. Ground water flow can give influences at heat exchange rate of the heat pump system. According to the hydraulic characteristics and temperature-depth profile, we consider that temperature-depth profile do not seem to be dependent on ground water flow. A permanent installation of fiber optic cable is expected as a reliable temperature measurement technique in a borehole heat exchanger system.
Keywords
- fiber optic sensing;
- distribution temperature sensing;
- borehole heat exchanger;
- thermal line sensor;
- geothermal heat pump