ᐅ Enthalpy Heat Exchanger for Central Controlled Residential Ventilation
Created on: 14 Nov 2022 11:01
P
Prager91
Hello everyone,
We have a central mechanical ventilation system from Tecalor (THZ 180/280) with, according to our heating technician, an enthalpy heat exchanger installed.
In winter, we now notice that the indoor humidity in the living area averages around 40%, which is relatively low—but not uncommon during winter.
Nevertheless, we specifically had an enthalpy heat exchanger installed to prevent this. My question is: How can I tell if the enthalpy heat exchanger is actually installed?
In my operating manual, there is a guide for replacing the “heat exchanger.” Is this usually an enthalpy heat exchanger, or can it also be a “standard” heat exchanger? How can I distinguish between the two?
I just want to be sure whether it has actually been installed (I have a few slight doubts due to past experiences with my heating technician 😀).
And now the question: Is this level of indoor humidity in winter normal despite having a mechanical ventilation system with an enthalpy heat exchanger, or should the humidity be significantly higher under these conditions?
We have a central mechanical ventilation system from Tecalor (THZ 180/280) with, according to our heating technician, an enthalpy heat exchanger installed.
In winter, we now notice that the indoor humidity in the living area averages around 40%, which is relatively low—but not uncommon during winter.
Nevertheless, we specifically had an enthalpy heat exchanger installed to prevent this. My question is: How can I tell if the enthalpy heat exchanger is actually installed?
In my operating manual, there is a guide for replacing the “heat exchanger.” Is this usually an enthalpy heat exchanger, or can it also be a “standard” heat exchanger? How can I distinguish between the two?
I just want to be sure whether it has actually been installed (I have a few slight doubts due to past experiences with my heating technician 😀).
And now the question: Is this level of indoor humidity in winter normal despite having a mechanical ventilation system with an enthalpy heat exchanger, or should the humidity be significantly higher under these conditions?
debaser schrieb:
During the day, I have a ventilation rate of 150m³ (5300 ft³) and at night 90m³ (3200 ft³), and the air still feels sufficiently fresh.For me, it's been exactly the opposite so far. During the day, there are fewer people in the house and more movement.
At night, the ventilation runs a bit higher because the bedrooms experience a "continuous load" from breathing, sweat, and so on.
The main reason I reduce the ventilation rate so much at night is actually due to the noise level. At 150 m³ (5300 ft³), I can hear the ventilation quite clearly in the bedroom during the night. (However, I am also very sensitive to noise) Otherwise, I might consider going down to around 120 m³ (4200 ft³) or so.
debaser schrieb:
The main reason I lower the ventilation flow so much at night is actually the noise level. At 150 m³/h (88 cfm) I can clearly hear the ventilation in the bedroom at night. (I’m just very sensitive to noise)
Otherwise, I might run it at around 120 m³/h (70 cfm). Did you hear it from the start?
Have all the exhaust filters been cleaned?
I was quite surprised to realize how much the dirt build-up on the filters affects the noise level.
The dirtier the exhaust filters, the louder it gets. Clean filters = the system is hardly or not audible even at maximum setting.
Enthalpy heat exchangers with moisture recovery operate with a rotating wheel that stores moisture and heat during half a rotation and then releases both to the opposing airstream – when working with two fans, one blowing outward and the other inward to achieve optimal efficiency – is that correct?
Have you checked the power consumption of the fan or both fans yet?
Have you checked the power consumption of the fan or both fans yet?
Schwipp schrieb:
Enthalpy heat exchangers with moisture recovery operate with a rotating drum,That is not an enthalpy heat exchanger. The described system is a rotary heat exchanger, which has drawbacks such as odor transfer.
In an enthalpy exchanger, only the fan moves.
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