ᐅ Controlled residential ventilation supply air in the living area near the sofa
Created on: 29 May 2021 14:19
K
kasse-tk
Hello dear forum members,
I have been an active reader of this forum for some time now, but I have reached a point where I need to ask a question. We are currently finalizing the construction plans for our semi-detached house, with construction scheduled to start in July. The HVAC contractor has recommended positions for the supply and exhaust vents of the mechanical ventilation system. Everything is clear so far, except for the location of the fresh air supply in the living area (marked in red in the attached picture). According to the HVAC contractor, the position so close to the sofa is acceptable and there should be no drafts, but we have some concerns. However, we can’t really think of a better location. If placed further to the left, the airflow would pass over the sofa area on its way to the kitchen exhaust; if placed further to the right, the left side of the living room would be without fresh air.
What do you think?
Thanks in advance!
Best regards, kasse-tk
I have been an active reader of this forum for some time now, but I have reached a point where I need to ask a question. We are currently finalizing the construction plans for our semi-detached house, with construction scheduled to start in July. The HVAC contractor has recommended positions for the supply and exhaust vents of the mechanical ventilation system. Everything is clear so far, except for the location of the fresh air supply in the living area (marked in red in the attached picture). According to the HVAC contractor, the position so close to the sofa is acceptable and there should be no drafts, but we have some concerns. However, we can’t really think of a better location. If placed further to the left, the airflow would pass over the sofa area on its way to the kitchen exhaust; if placed further to the right, the left side of the living room would be without fresh air.
What do you think?
Thanks in advance!
Best regards, kasse-tk
Schimi179131 May 2021 13:16KingJulien schrieb:
...
I have no sensation except hunger and thirst.Reproduction?...... ...... ...... ......
S
Strahleman31 May 2021 15:01Why only one fresh air vent in such a large room? Wouldn't two vents in the southern corners be better?
Quite a justified question.
With 43 sqm (462 sq ft) and a ceiling height of 2.5 m (8 ft), the room volume is about 107.5 cubic meters (3,795 cubic feet).
At an air exchange rate of 0.3–0.4 per hour, the supply air would need to deliver 32.25–43 cubic meters per hour (1,139–1,520 cubic feet per hour).
This is usually not achievable with a single duct, so a double connection is necessary. This increases the risk of flow noises and drafts.
The positioning is also not ideal for ventilating the room. I would also move the exhaust away from the stove (that is not a second range hood 🙂).
Maybe better to have a supply air inlet in one corner on the left and another in the opposite corner on the right. Connect the exhaust air doubly and regulate it to about 3/4, with the remaining airflow going through the hallway to the upper floor.
Edit: Is the plan complete, or is there a missing part of the building on the ground floor?
With 43 sqm (462 sq ft) and a ceiling height of 2.5 m (8 ft), the room volume is about 107.5 cubic meters (3,795 cubic feet).
At an air exchange rate of 0.3–0.4 per hour, the supply air would need to deliver 32.25–43 cubic meters per hour (1,139–1,520 cubic feet per hour).
This is usually not achievable with a single duct, so a double connection is necessary. This increases the risk of flow noises and drafts.
The positioning is also not ideal for ventilating the room. I would also move the exhaust away from the stove (that is not a second range hood 🙂).
Maybe better to have a supply air inlet in one corner on the left and another in the opposite corner on the right. Connect the exhaust air doubly and regulate it to about 3/4, with the remaining airflow going through the hallway to the upper floor.
Edit: Is the plan complete, or is there a missing part of the building on the ground floor?
No, the plan was not complete yet; a small office, pantry, and guest bathroom were still missing. Attached is now the entire ground floor. Yes, the fresh air supply in the living area is intended to be connected with two ducts. I don’t remember how the kitchen exhaust was planned. I sketched the idea of fresh air supply in the corners—did I understand it correctly? And the kitchen exhaust further away from the stove? That actually makes sense, because if the stove sucks air downward and the mechanical ventilation system exhausts air upward... that really pulls on the cook (or the cook)! 🙂
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