Many thanks for your reply Chris, I find your approach very valuable and I’m sure it will be very useful for many people around too.
What I had in mind was perhaps too complicated. Since the convectors are throwing hot air to the windows, I was wondering how would this heat affect the air temperature in those areas near the facade and the people sitting there.
However your suggestion makes much more sense and simplifies it significantly. Since the heat would directly go out of the space through the glazing, only the glass will be heated to indoor temperature. Probably, as the convectors wouldn’t be perfectly adjusted all the time, there would be some extra heat remaining in the areas near the façade but I guess it could be neglected.
As the team is keen on seeing comfort results for the final proposal (including convectors so far), I assume that replacing the glazing temperature for a constant temperature equivalent to the indoor air would do it. In terms of energy, it is a clever way to find the wattage flow through the envelope and assume that as the energy used by the convectors.
On another level, I definitely agree that perimeter convectors are far from ideal for all the reasons that you mention. However, in this particular case, it seems the way forward as the project is already in a late design stage and even with the triple pane they are required (the team is keen on a fully glazed facade). I am now curious on how much would be the changes you suggest affect comfort (I’ll try to test them as they could potentially be a great solution for other similar cases)
Many thanks for the suggestion of the radiant slab, it is amazing the pace at which Honeybee evolves and the possibilities it brings! As you mention it is a very elegant solution and might be the way to get rid of those convectors. Perhaps we can eliminate them in the overtime 