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Title: Control of heat and humidity in German mines

In order to increase the economic efficiency of West European hard coal, great efforts are being made at present in the coal-producing countries to lower production costs. This aim is to be achieved in Germany, among other things, by a drastic increase in the saleable output per working face up to an average of 10,000 t/d in these cases where very long longwall faces (400 m {+-} 50 m) are possible. With the substantially greater heat input into the air stream which this involves, there is the danger that climatic limits will be exceeded even at longwall faces with lower than average rock temperatures. Working in high temperatures and/or humidities can lead to risky lack of concentration of the miners to heat collapse and extremely dangerous heat stroke. In order to minimize the costs for mine climate control well-proven planning software and climitization technology is necessary for underground workings. With the DMT climate simulation programs, both the dry and the extremely significant humid heat transfer can be calculated and the optimum air cooling system for a mine can be designed with due regard to technical and economic aspects.
Authors:
Publication Date:
OSTI Identifier:
20020977
Resource Type:
Conference
Resource Relation:
Conference: 8th US Mine Ventilation Symposium, Rolla, MO (US), 06/11/1999--06/17/1999; Other Information: PBD: 1999; Related Information: In: Proceedings of the 8th US mine ventilation symposium, by Tien, J.C. [ed.], 740 pages.
Publisher:
University of Missouri-Rolla Press, Rolla, MO (US)
Research Org:
DMT-Gesellschaft fuer Forschung und Pruefung mbH, Essen (DE)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FEDERAL REPUBLIC OF GERMANY; LONGWALL MINING; COAL MINING; TEMPERATURE CONTROL; HUMIDITY CONTROL; COOLING SYSTEMS; COMPUTER-AIDED DESIGN; AIR CONDITIONING