Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Hello obuchely, What if you used a direct air side economizer with the following settings: Allow OA, use the air-to-air HX and set the latent effectiveness to 100% and the sensible to 0%? This way the zone humidity is maintained and the heat exhausted. You will then need an economizer to bring in the cool OA. I think a fixed dry bulb type would work with the specified dry-bulb temperature limit set to zone thermostat setpoint. The economizer will modulate to meet the mixed air temperature setpoint. This should be the same as your cooling supply air setpoint. The economizer should be configured such that the heat recovery device is never bypassed (Economizer control action type: Modulate flow). I think that covers it.
| | 2 | No.2 Revision |
Hello obuchely,
What if you used a direct air side economizer with the following settings:
Allow OA, use the air-to-air HX and set the heating sensible and latent effectiveness to 100% 0% and the cooling sensible and latent effectiveness to 0%? 100%? This way the zone humidity is maintained and the heat exhausted. You will then need an economizer to bring in the cool OA. I think a fixed dry bulb type would work with the specified dry-bulb temperature limit set to zone thermostat setpoint. The economizer will modulate to meet the mixed air temperature setpoint. This should be the same as your cooling supply air setpoint. The economizer should be configured such that the heat recovery device is never bypassed (Economizer control action type: Modulate flow).
I think that covers it. it.
