All this back and forth about Evapco units is probably annoying everyone to death at this point.To other points:
Are those units dehumidifiers, or are they are heat exchangers for the working fluid which then feed heaters, chillers, and dehumidifiers?
To clarify this issue and answer the question above I can provide some clarity. The Evapco units are not dehumidifiers, they are Cooling Towers. Cooling towers are heat rejection units that are used to reject heat generated inside the building to the ambient air. They are typically paired with water cooled chillers that provide the cooling to air conditioning systems but can also directly reject heat from other processes. This whole area of the factory could be an office building and you would still have these Evapco units present as part of the cooling system. Any claim that the presence of these Cooling Towers meas that electrde and cathode production is underway is a big stretch.
Dehumidification is extremely important to battery manufacturing as extremely low humidity levels are required to prevent airborne moisture affecting the chemicals, materials and processes used in the anode, cathode and cell production. Joe Tegtmeyer did capture the delivery of dehumidification units recently as shown in the video below. These would be a dessicant style dehumidification unit that absorbs moisture directly from the air. The dessicant needs to be dried again as part of the dehumidification cycle and that's where the air conditioning plant can assist, but ony as a secondary input.