ᐅ Automation of a Mechanical Ventilation with Heat Recovery (MVHR) System
Created on: 23 May 2018 17:44
H
Hausbauer1
Hello everyone,
I’m currently struggling again with the warm indoor temperatures (unfortunately, there is no mechanical ventilation with heat recovery). When I am at home, I try to ventilate vigorously whenever it is cooler outside than inside, even if the temperature difference is only 1-2°C (34-36°F). And when it’s warmer outside, everything is shaded and the windows stay closed.
This obviously pushes comfort limits. If you want to stay in a room, ventilating at the same time is not always very comfortable. Also, you don’t want to leave the windows open all day when you’re not at home or when it gets warmer as the day goes on.
My question to all experts and owners of centralized ventilation systems is: can a mechanical ventilation system be programmed to operate exactly like the rational ventilation behavior you would do manually? So, no ventilation when it’s warmer outside and strong ventilation when it’s cooler outside. Of course, without heat recovery in this case. In winter, it would be different, with ventilation mainly during the day when temperature differences are smaller, and less or no ventilation at night when it’s very cold outside.
I think it’s clear what I’m getting at. Can these systems be automated to that extent, or is that too much to expect?
Thanks.
I’m currently struggling again with the warm indoor temperatures (unfortunately, there is no mechanical ventilation with heat recovery). When I am at home, I try to ventilate vigorously whenever it is cooler outside than inside, even if the temperature difference is only 1-2°C (34-36°F). And when it’s warmer outside, everything is shaded and the windows stay closed.
This obviously pushes comfort limits. If you want to stay in a room, ventilating at the same time is not always very comfortable. Also, you don’t want to leave the windows open all day when you’re not at home or when it gets warmer as the day goes on.
My question to all experts and owners of centralized ventilation systems is: can a mechanical ventilation system be programmed to operate exactly like the rational ventilation behavior you would do manually? So, no ventilation when it’s warmer outside and strong ventilation when it’s cooler outside. Of course, without heat recovery in this case. In winter, it would be different, with ventilation mainly during the day when temperature differences are smaller, and less or no ventilation at night when it’s very cold outside.
I think it’s clear what I’m getting at. Can these systems be automated to that extent, or is that too much to expect?
Thanks.
More precisely: once the heat is inside, it stays inside... running the mechanical ventilation system at 100% during the night and then only 10% during the day does not make much difference.
The temperature barely changes.
In other words, shading is ten times more important than automating the mechanical ventilation system.
Of course, one does not exclude the other, and ideally, they complement each other.
The temperature barely changes.
In other words, shading is ten times more important than automating the mechanical ventilation system.
Of course, one does not exclude the other, and ideally, they complement each other.
Mycraft schrieb:
In other words, shading is ten times more important than automation of the controlled ventilation system.I would even say an automated shading system.
Air, after all, is a very poor heat conductor. That’s why, for example, modern office buildings are switching to water-based systems. These require smaller ventilation ducts, consume less energy, and above all, avoid cold drafts.
Mycraft schrieb:
Which system is installed? I somehow find the original poster's question pointless in relation to their apartment, since the apartment does not have a mechanical ventilation system with heat recovery.
In general, the question is interesting if you plan to build a single-family house with a mechanical ventilation system with heat recovery (including for me). Thanks for the information about the summer bypass. We will also be installing a Zehnder system.
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Steffen8024 May 2018 16:47You can forget it… the mechanical ventilation system for living spaces neither cools the air in summer nor warms it in winter (for example, distributing warm fireplace air from the living room throughout the house). The only thing that helps (if you don’t want to gather multiple devices) is an air conditioning system (but not a cheap DIY store model).
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cybergnom24 May 2018 17:48Steffen80 schrieb:
... to heat during winter as well (e.g., distributing warm fireplace air from the living room throughout the house). That would also completely defeat the purpose of a controlled mechanical ventilation system.
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Steffen8025 May 2018 12:17cybergnom schrieb:
That would also render the purpose of a mechanical ventilation system with heat recovery pointlessWhy?
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