We have a triple glazed conservatory, it is heated along with the living room. It has an uninsulated stone pillar, with windows attached.
Unfortunately, the stone column gets completely wet because it is the coldest point. What can you do about it other than wipe it off?
Is there any way to prevent it from getting wet?
As long as the column is the coldest point and if I am interpreting it correctly, it is connected to the outside world, nothing helps except temperature compensation. Otherwise, moisture from the air will condense at that exact spot. Physics.
Heating can be accomplished in many different ways. A stream of warm air directed along the column may be sufficient.
Another option is to keep the air in the conservatory from falling below the dew point in the first place by heating the entire room. But that would probably be too expensive. Or to keep the air free of moisture altogether, i.e., keep the humidity very low. (Constant ventilation, dehumidifier)
What comes to my mind. Run a jet of warm air over the column. Let the infrared heat radiate specifically against the column. Attach heating wires to the column (like a rear window heater in a car). Properly heat the entire conservatory. The temperature of the stone should be above the dew point – as already written.
Insulate the outside. There is nothing that can be done economically. Put a heater in front of it and turn it on around the clock.