Why data centers still need evaporative cooling: closed loops handle flow, not heat

AryHHAry · x · 2026-09-30

Explaining data center cooling, the author argues closed loops only solve water circulation, not heat rejection. In tropical climates, the most power-efficient way to dump heat remains evaporation: the pipes are closed but the vapor is open. His test: if the loop were truly sealed, why is there a refill line?

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