| 논문명 |
P/T 프로브를 활용한 현지 지중열전도도 해석기법에 관한 연구 / A Study on the In-situ Ground Thermal Conductivity analysis technique with A Wireless P/T Probe / 6-A 신재생 에너지(Ⅰ) |
| 저자명 |
김지영 ; 장재철 ; 강은철 ; 장기창 ; 이의준 |
| 수록사항 |
대한설비공학회 동계학술발표회 논문집 (2009-11) |
| 주제어 |
Wireless P/T probe(무선 압력/온도 프로브) ; Ground heat exchanger(지중열교환기) ; Ground thermal conductivity(지중열전도도) ; TRT(열응답 실험) ; Local heat flux (국부지열유속) ; Geothermal Heat Pump(지열히트펌프) |
| 요약2 |
The ground thermal conductivity(k) is thus a key parameter in designing Ground Heat Exchanger and coupled geothermal heat pump systems. Currently, although a thermal hydraulic response test(TRT) is mostly used in practice, the thermal hydraulic TRT needs additional power and is generally time-consuming. A new, simple wireless P/T probe for a hi-speed k determination was introduced in this paper. This technique using a P/T probe is less time-consuming and requires no external source of energy for measurement and predicts local thermal properties by measuring soil temperatures along the depth. Measured temperature data along the depth was analyzed. In order to verify the new technique for the determination of k, k that calculated from the measured temperature data using a P/T probe was compared with one obtained from conventional hydraulic TRT. As a result, the P/T probe can replace the conventional hydraulic TRT method after carrying out the additional research on a lot of sites. |
