Patent ID: 7254022

Claim:
A cooling system for an equipment and network cabinet, comprising: a sealed inner space of the cabinet, superimposed electronic modules located in the inner space, the individual electronic modules being supplied with cold supply air having a uniform supply air temperature and having air outlet ports for supplying heated exhaust air, a closed cooling air circuit for dissipating the heat loss of the electronic modules comprising a supply air duct and an exhaust air duct, the exhaust air duct having a first duct section for a rising exhaust airflow and a second duct section for a falling exhaust airflow, an air-water heat exchanger for cooling heated exhaust air, the air-water heat exchanger being located in a lower area of the cabinet, and an air ducting provided with equally long air flow paths and therefore equal flow resistances with respect to the individual electronic modules and an air-technical separation between the cold supply air and heated exhaust air, wherein the heated exhaust air is supplied through the air outlet ports of the electronic modules to the exhaust air duct.