Dear forum,
Caveat: I am not too familiar with the physics of radiant heating, especially when combined with a typical air system.
The design I want to model uses gas radiant (overhead) heaters with an air loop gas heating system. The radiant heaters are intended to provide comfort; the air loop provides ventilation air for the entire building PLUS a reduced level of heating for the portions of the building which don't have radiant heat. It seems to me that I can use zone radiant heaters for the portions of the building that need comfort and an air loop for the rest of it, then use a ZoneCrossMixing object to "share" air between these zones.
Other notes: - I intend to control the radiant system using Operative Temperature and the air loop by air temperature. (This strikes me as a potential problem of the systems "fighting" each other, but, as mentioned, I'm not too familiar with these conepts inside E+.) - The "zones" are not separated physically by walls; it's a big warehouse in which people are normally in only portions of the building - There are occupied and unoccupied periods during which the zone setpoint temperatures are different - The radiant system is considered by ASHRAE to be a "low temperature" radiant system, but I'm assuming that E+ will model it well as long as I assign the proper combustion efficiency and radiant fraction - There is no mechanical cooling system
Can you please give guidance regarding anything that will be helpful to know about interactions between radiant and non-radiant systems that I should know as I begin?
Thanks in advance.
