Analytical system for ventilation simulators with skyline nodal pressure method and practical estimate system for underground mine air-conditioning

Kyuro Sasaki, Hiroshi Miyakoshi, Kazuhiro Mashiba

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

Abstract

A ventilation analytical system adapting nodal pressure method using skyline modified Choleski's decom-position scheme for network-flow analysis and a new practical system to estimate various thermal air conditions has been developed. The quasi-linear equations for solving steady-state network airflow have been described using the connective function in general forms. The skyline modified decomposition scheme has an advantage on rapid convergence and the sake of computer memory space compared with other schemes. The key part of the analysis for climatic conditions through network airways is how to estimate the temperature of the airway rock-surface with partly or full wet condition. A practical and simple solution without any iterative calculations for its estimation has been proposed. This new solution is applicable to practical ranges of airflow temperature, humidity, rock thermal properties and wetness. The present analytical system have been successfully applied to a ventilation simulator named “MIVENA” developed by authors.
Original languageEnglish
Title of host publication26th International Symposium on Application of Computers and Operations Research in the Mineral Industry (APCOM) (State College, Pennsylvania, USA)
EditorsR. V. Ramani
PublisherSociety for Mining, Metallurgy, and Exploration, Inc.
Pages393-399
Number of pages7
ISBN (Print)0873351371
Publication statusPublished - Sep 1996

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)
  • Chemical Health and Safety

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