Hybrid heat management for hydrogen electrolyzer

A hydrogen electrolyzer system, comprising:

• hydrogen and oxygen exhaust manifolds;
• a plurality of hydrogen electrolyzer cells each coupled to, and sharing, the hydrogen and oxygen exhaust manifolds, wherein each of the hydrogen electrolyzer cells includes:
• an anode chamber including an anode electrode bathed in an electrolytic solution, the anode chamber vented to the oxygen exhaust manifold;
• and
• a cathode chamber including a cathode electrode bathed in the electrolytic solution, the cathode chamber vented to the hydrogen exhaust manifold;
• and
• a control system coupled to the anode and cathode electrodes, the control system including logic that when executed causes the hydrogen electrolyzer system to perform operations including:
• applying a voltage across the anode and cathode electrodes to produce a hydrogen gas in the hydrogen exhaust manifold and an oxygen gas in the oxygen exhaust manifold during a steady-state electrolysis of the hydrogen electrolyzer system;
• and
• maintaining the electrolytic solution in the hydrogen electrolyzer cells within a steady-state temperature range during the steady-state electrolysis based at least in part on an evaporative cooling of the electrolytic solution.