EXPERIMENTAL STUDY ON THE SILICA DEPOSITION IN A POROUS MEDIUM.

Ryuichi Itoi, Hiroaki Maekawa, Michihiro Fukuda, Kenji Jinno, Koichiro Hatanaka, Takushi Yokoyama, Shin Shimizu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

The decrease in permeability of a porous column (50 cm long and 5 cm in diameter) in a cylinder due to the deposition of silica scale has been examined. The temperature of the Otake water used for the experiment was 90-92 degree C and contained 522 ppm of silica. Permeability was calculated using the potential measured by 11 manometers which are set at various levels in the cylinder. The results indicate that the most of the silica scale was deposited within the first 10 cm of the porous medium and thereafter rapidly decreased in amount. In inverse proportion to the amount of silica deposits, the permeability was reduced to 0. 5-2 % in the uppermost part of the porous medium whereas it retained 80-90 % of the initial value in the places distant from the upper surface.

Original languageEnglish
Title of host publicationTransactions - Geothermal Resources Council
PublisherGeothermal Resources Council
Pages301-304
Number of pages4
ISBN (Print)0934412588
Publication statusPublished - 1984

Publication series

NameTransactions - Geothermal Resources Council
Volume8
ISSN (Print)0193-5933

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

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