Dry fog diffuser for cold service case

A dry fog humidification system for use in a refrigerated space comprising:

• a pump connected between a water supply and a water header to provide a high-pressure water supply in a range of 600-1000 psi;
• a control selectively operating the pump;
• a plurality of diffuser assemblies, each diffuser assembly comprising,
• a base having an adapter for connection to the water header;
• a nozzle having an orifice in the range of 0.003-0.012 inches to produce a fine water vapor;
• a riser operatively connecting the nozzle to the adapter to space the nozzle from the base;
• a housing mounted to the base and enclosing the nozzle, the housing defining an open space below the nozzle providing an air inlet to the interior of the housing;
• and
• a diffuser comprising a stainless-steel elbow having an inlet end and an outlet end, the inlet end being mounted to the housing, an inner surface of the diffuser having a roughness of at least Ra25, wherein water vapor from the nozzle is diffused in the elbow and the diffuser produces a dry fog exiting at the outlet end.