A center includes a main room having a number of rows of bays, which hold functional energy-intensive pieces of equipment having air intake passages located functionally beside their front surface and air discharge passages located beside their rear surface, and cooling elements associated with passages, with the arrangement of the bays and functional equipment being such that a pair of two rows, whose back-to-back surfaces are the rear surfaces, defines a hot passage where the air discharge passages, in which the air is hot, are accessible at a temperature T3 that is higher than the temperature T2 of the tempered air found in the portion of the main room that is outside the hot passage and from which the front surfaces and the air intake passages are accessible, and air-conditioning elements for providing filtered air, whose flow rate, temperature T2, and hygrometric degree are suitable for optimal operation of functional.