In high-throughput, multi-shift cold storage warehouses, lithium-ion batteries still present a logistical challenge. Opportunity charging takes time, and swapping a 4,000-pound battery requires heavy infrastructure. To achieve true zero-emission continuous operation, major logistics players are adopting Hydrogen Fuel Cell Electric Vehicles (FCEV). The technology works brilliantly, but it is creating a bizarre physical hazard on the dock floor.
A hydrogen fuel cell generates electricity through a chemical reaction between hydrogen and oxygen. The only byproduct of this reaction is pure water. In a typical warehouse, the fuel cell exhausts this water as a harmless vapor. However, in a -20 degree Fahrenheit freezer facility, that water vapor condenses and freezes instantly.
Every time a fuel cell forklift drives down a freezer aisle, it is essentially acting as a snowmaker, leaving a trail of fine ice crystals behind it. When the truck is idling at a staging lane, the water drips down and forms a solid ice patch on the concrete floor. These ice patches are creating severe slip-and-fall hazards for warehouse workers and causing traction control nightmares for the forklifts themselves. Facilities are having to install heated catch basins under the exhaust ports of the trucks and increase their floor-scraping frequency dramatically. The zero-emission dream is technically sound, but the thermodynamic reality of water exhaust in a sub-zero environment is a massive operational headache.
