Process or non-process? Kitchen Hood Exhaust and Makeup Air

I think I answered this a bit ago in one of these forums. As I recall when the hood is make up air and exhaust without any space conditioning then it is process. When the hood includes some space conditioning that serves the space surrounding the hood then it is not process.

Correct. Prescriptively in 90.1 (section 6.5.7.1) the make up air should only be tempered, not fully heated.

Hello, Is this still the case with LEEDv4?

Have you noticed any change in 90.1-2010 that would lead you to think otherwise?

Hi, in my case (LEED ID+C:Retail v4) the kitchen hood is integrated with the HVAC system, namely it exhausts part of the outdoor air introduced by the AHU which is in charge of the air conditioning and ventilation of the spaces (restaurant, kitchen and storage rooms). Indeed, the project documents consider explicitly that the AHU's return air flow rate is lower than the supply.  Is it correct to consider the kitchen hood as regulated non-process energy, since the makeup air is also used for space conditioning?  How should be modelled the baseline HVAC system?: A) explicitly model the kitchen hood in addition to the baseline HVAC system (as electric load or as exhaust fan), with same air flow rate and fan characteristics as the proposed case, and add its fan consumption to the fan power allowed for the HVAC system according to section 6.5.3.1.1 ASHRAE 90.1-2010; B) same as A, but considering the minimum air flow rate extraction requirement according to ventilation prerequisite EQp1, instead of the design extraction flow rate; C) consider the kitchen hood as belonging to the ventilation system and therefore delete it from the baseline HVAC system, in this case its power would be considered part of the allowed fan power for the HVAC system according to section 6.5.3.1.1 ASHRAE 90.1-2010. Considering that for the kitchen room the exception G.3.1.1b applies (but not the G3.1.1d) and therefore a dedicated HVAC System type 4 is present, is it correct to size the outdoor air flow rate on the kitchen hood extraction rate, being this the most demanding requisite?  How to model a similar case, but where the kitchen hood extracts the totality of the supply air delivered by the AHU for ventilation and space conditioning (100% outdoor air, supply fan only) ? Thank you