Basically there are two circulation loops during the counterflow closed cooling tower work:

 

1. The internal cycle: hot water flows from the industrial equipment into the cooling tower cooling coil, the cooling coil through the heat into the outside, after cooling the circulating water from the pump to the device.

 

2. External circulation: driven by the spray pump, spray water from the sink to the sprinkler system, after the water jet cooling coil contact with the heat exchange, part of the hot steam through the fan discharge, the spray water after cooling fell to Sink again after the cycle.