Thermal response tests using optical fiber thermometers

Hikari Fujii, Hiroaki Okubo, Ryuichi Itoi

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

53 被引用数 (Scopus)


Thermal response tests (TRTs) were conducted using optical fiber thermometers in two types of ground heat exchangers (GHEs), coaxial type and U-tube type, drilled in a heterogeneous deposit in Fukuoka City, Japan. For the interpretation of the TRTs, the ground was sliced into sub-layers and the cylindrical source function was applied to each sub-layer to calculate the heat exchange performance between the ground and the GHEs. A nonlinear regression method was used to estimate the vertical distribution of thermal conductivities of the ground by minimizing the sum of squared errors between measured and calculated temperatures of ground and heat medium. The estimated thermal conductivity distribution showed good agreements with the rock type distributions and the groundwater flow information at the well site, indicating the reliability of the testing and interpretation method.

ホスト出版物のタイトルGeothermal Resources Council Transactions - GRC 2006 Annual Meeting
ホスト出版物のサブタイトルGeothermal Resources-Securing Our Energy Future
出版ステータス出版済み - 2006
イベントGRC 2006 Annual Meeting: Geothermal Resources-Securing Our Energy Future - San Diego, CA, 米国
継続期間: 9月 10 20069月 13 2006


名前Transactions - Geothermal Resources Council
30 I


その他GRC 2006 Annual Meeting: Geothermal Resources-Securing Our Energy Future
CitySan Diego, CA

!!!All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 地球物理学
  • 再生可能エネルギー、持続可能性、環境


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