I guess it is the Prometheum Armor. It is a main Earth 616 armor used by Tony.At least by the looks of it.
Prometheum Armor - The suit's most obvious design point are the two, large exhaust pipes on its back and chestplate. The pipes allow Iron Man to let off steam from internal power sources as well as enabling him to absorb heat from energy blasts and direct them back at attackers as super-hot, vented plasma. The armor can absorb and compensate for a 2 million kilowatt electric blast. (Exhaust portals on hands and knees also help to vent plasma.)
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