Original scientific paper

Contribution for Mining Atmosphere Calculation

Franica Trojanović

Abstract

Humid air is an unavoidable feature of mining atmosphere, which plays a significant role in defining the climate conditions as well as permitted circumstances for normal mining work. Saturated humid air prevents heat conduction from the human body by means of evaporation. Consequently, it is of primary interest in the mining practice to establish the relative air humidity either by means of direct or indirect methods.
Percentage of water in the surrounding air may be determined in various procedures including tables, diagrams or particular calculations, where each technique has its specific advantages and disadvantages. Classical calculation is done according to Sprung's formula, in which case partial steam pressure should also be taken from the steam table. The new method without the use of diagram or tables, established on the functional relation of pressure and temperature on saturated line, is presented here for the first time.

Keywords

Mining atmosphere; Humid air; Partial steam pressure; Relative humidity; Secanta method

Hrčak ID:

24659

URI

https://hrcak.srce.hr/24659

Publication date:

4.12.1989.

Article data in other languages: croatian

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