ᐅ Automation of a Mechanical Ventilation with Heat Recovery (MVHR) System
Created on: 23 May 2018 17:44
H
Hausbauer1H
Hausbauer123 May 2018 17:44Hello 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.
That really depends on the system and the control behind it. A simple time-based management can usually be set up. In summer, ventilate more at night or in the early morning than at midday. However, temperature isn’t everything; fresh air is also important. That’s what a mechanical ventilation system with heat recovery is for.
If you actually want to include real-time indoor and outdoor temperatures, humidity, CO2 levels, and other factors in an intelligent calculation, that tends to move towards a KNX system. You need sensors to provide the data, logic for the calculations, and a mechanical ventilation system with heat recovery that can be controlled by external logic.
If you actually want to include real-time indoor and outdoor temperatures, humidity, CO2 levels, and other factors in an intelligent calculation, that tends to move towards a KNX system. You need sensors to provide the data, logic for the calculations, and a mechanical ventilation system with heat recovery that can be controlled by external logic.
That works fine initially without KNX.
My Zehnder Q350 has a summer bypass and controls everything automatically, without KNX.
It measures temperature and humidity for all four airflows and then regulates accordingly based on those readings and the selected settings. Very comprehensive.
My Zehnder Q350 has a summer bypass and controls everything automatically, without KNX.
It measures temperature and humidity for all four airflows and then regulates accordingly based on those readings and the selected settings. Very comprehensive.
Mycraft schrieb:
Which system is installed? Hausbauer1 schrieb:
(yes, unfortunately there is no controlled residential ventilation system).Ventilation systems with automatic summer bypass already come quite close to what is desired. Otherwise, manufacturers also offer additional system accessories, such as various types of sensors. KNX is not necessarily required for this.
Similar topics