Continuous flow and batch grain dryers use large fans and burners, and the fans alone on most farm dryers draw well beyond 15 kW. Grain legs and large augers feeding them are heavy motors too. Running a full dryer from stored hydrogen with round-trip efficiency of 30% or less would be the wrong tool for the job, and we will not pretend otherwise. If your question is whether this replaces the dryer's power supply, the answer for most farms is no.
Dryers and silos have plenty of small, critical electronics: the dryer controller and burner management, moisture and temperature probes, silo temperature cables that warn of hot spots, and small aeration fans on storage bins. When the power fails, losing those means losing visibility of grain that may be heating. A UPS-mode inverter keeps them running without a reset, and the fuel cell supplies them from hydrogen stored at 30 bar or less.
How it works →
Aeration fans on small to medium silos can fit within 15 kW, depending on how many run at once. Keeping grain cool through an outage protects the harvest already in the bin, while drying of fresh grain waits until the grid returns. Hydrogen is made on off-peak power or wind before harvest, and the store keeps for weeks. The pilot would separate the loads that fit from those that do not, and tell you straight.
Most farm dryer fans draw well over 15 kW, so one unit would not cover them, and hydrogen round-trip of 30% or less makes it a poor fit anyway. The system is better used for controls, monitoring and small aeration fans.
Grain in storage can heat and spoil without anyone noticing. Silo temperature cables and probes give early warning, and keeping them powered through an outage means you still know what is happening in the bin.
A small auger may fit within 15 kW. Larger augers and grain legs often do not. The pilot would check motor sizes and what else runs at the same time.
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