In the case of hydrogen-cooled alternators, CHAUMECA TECHNOLOGY adsorption dryers have been used for several decades to remove the water vapor that accumulates in the hydrogen. Two-column dryers use wet hydrogen as carrier gas for regeneration. No gas loss occurs. The dryer can operate continuously. The operating pressure is typically 4 barg and the flow rates are often less than 30Nm3/h.

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​ This equipment must meet the requirements of the nuclear industry and the ATEX standard.