Central Refrigerating Plants For Air Conditioning In The Mines Of Ruhrkohle AG - Introduction

The main reasons for the development of higher heat levels in German coal mines are the increasing depth of working with the con- sequent higher rock temperatures, increased use of electrical equipment, and increasing coal output due to concentration and mechanisation of workings. In place of the normal decentralised underground cooling plants, schemes and pilot plants have been developed to produce the required cooling capacities in central air cooling units, which then supply the cold air to the underground working points where needed.