Method and device for cooling mine ventilating machines in the longwall face

摘要

With a method and a device for cooling mine ventilating machines in the longwall face, there is provision according to the invention for water to be cooled outside the longwall face at least below 4 DEG C and on average below 3 DEG C and then carried to an annular line of the longwall face whose outer heat exchange surface may, according to the invention, if appropriate be increased by welded-on profile irons or pipes.