There is a cafeteria where the HVAC designer of record intends to have it naturally conditioned. According to ASHRAE 55-2004, naturally conditioned spaces must be equipped with operable windows that open to the outdoors and are readily adjustable by the occupants of the space.

The cafeteria in question is equipped wtih operable windows. Nevertheless, the resultant indoor operative temperature will likely be beyond the acceptable band in figure 5.3 of the standard.

Is supplemental evaporative cooling, which counts chiefly on fans, together with evaporation effect of water, construed as a viable alternative for naturally conditioned spaces?

Thank you very much in advance.