Temperature reduction in shaded versus unshaded area under the Sun 7

[solidspaces]

The Steam for humidification of supply air is injected in the supply Air Duct by a standalone humidifier at the Roof that is open to the Sun.
The maximum ambient temperature for the electronic controls of this humidifier as specified by the manufacturer is 40C.
The ambient temperature at the location actually goes to above 52 degrees centigrade, therefore this humidifier must be housed in a shaded portion to bring down the temperature.
Would it be sufficient to simply enclose this humidifier in a non air conditioned but louvered steel enclosure as the means for reducing the temperature from 50 degrees to 40 degrees, or must some air conditioning be provided to bring the ambient temperature down? Would an insulation lining in the weather box (but without any air-conditioning or forced ventilation) be sufficient?

 

[ChasBean1]

“We have low relative humidity (about 15-30%) all year round” is meaningless without temperature. Look at the space. Say you want to maintain 20°C but you don’t want RH to drop below 40%. If it’s 37°C outside and the RH is only 15%, you still don’t need to humidify because the dew point is above 6°C and the space will be at or above 40% RH. For the summer, in general, you shouldn’t need humidifiers. Think in dew point and not %RH.