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If I have a DOAS for the proposed model, how should I model it in the baseline model? For example, if the main air system for the baseline model is system 6 (Code here is ASHRAE-2013). Should I model the DOAS for the baseline model? If not, should I add a preheat coil with the same control manner as the DOAS system of the proposed model? Should I keep the outside air fan and the exhaust air fan for the baseline model since they are in the proposed DOAS system?

If I have a DOAS for the proposed model, how should I model it in the baseline model? For example, if the main air system for the baseline model is system 6 (Code here is ASHRAE-2013). Should I model the DOAS for the baseline model? If not, should I add a preheat coil with the same control manner as the DOAS system of the proposed model? Should I keep the outside air fan and the exhaust air fan for the baseline model since they are in the proposed DOAS system?system? Can we treat the DOAS as a fan, a cooling coil and a heating coil have been added in the outside air duct? From 1.G3.1.2.4 the baseline model should have the preheat coil modeled in the same manner as the proposed model. (that is why I asked if the preheat coil of DOAS needs to be modeled in the baseline model). 2. G3.1.2.5 mentions the return air fan, exhaust air fan for the baseline model, which makes me question about if the outside air fan from the DOAS system needs to be added to the baseline model as well.

If I have a DOAS for the proposed model, how should I model it in the baseline model? For example, if the main air system for the baseline model is system 6 (Code here is ASHRAE-2013). Should I model the DOAS for the baseline model? If not, should I add a preheat coil with the same control manner as the DOAS system of the proposed model? Should I keep the outside air fan and the exhaust air fan for the baseline model since they are in the proposed DOAS system? system?

Can we treat the DOAS as a fan, a cooling coil and a heating coil have been added in the outside air duct? From 1.G3.1.2.4 the baseline model should have the preheat coil modeled in the same manner as the proposed model. (that is why I asked if the preheat coil of DOAS needs to be modeled in the baseline model). 2. G3.1.2.5 mentions the return air fan, exhaust air fan for the baseline model, which makes me question about if the outside air fan from the DOAS system needs to be added to the baseline model as well.

If I have a DOAS for the proposed model, how should I model it in the baseline model? For example, if the main air system for the baseline model is system 6 (Code here is ASHRAE-2013). Should I model the DOAS for the baseline model? If not, should I add a preheat coil with the same control manner as the DOAS system of the proposed model? Should I keep the outside air fan and the exhaust air fan for the baseline model since they are in the proposed DOAS system?

Can we treat the DOAS as a fan, a cooling coil and a heating coil have been added in the outside air duct? From 1.G3.1.2.4 the baseline model should have the preheat coil modeled in the same manner as the proposed model. (that is why I asked if the preheat coil of DOAS needs to be modeled in the baseline model). 2. G3.1.2.5 mentions the return air fan, exhaust air fan for the baseline model, which makes me question about if the outside air fan from the DOAS system needs to be added to the baseline model as well.