Mine air cooling circuit with underground water extraction - has water admixture point directly connected to primary circuit supply lead

摘要

Cold water serves as cooling carrier conveyed via circulating pumps, for a primary circuit led down from above ground, and following secondary circuits with one or more water extraction and admixture points, in an air-cooling system in a mine. The water admixture point (25) is located following the underground cold-generating assembly (11), with the supply (18) and is directly connectable to the supply duct (2) for the primary circuit (Z) via a pipe lead (20), which may contain a pressure-reduction valve (22).S The admixture point may be preceded by a regulating valve (23) operated by a flow meter in the return (19).