VMC and filtration class F9 - Electrostatic filters

Heating, insulation, ventilation, VMC, cooling ... short thermal comfort. Insulation, wood energy, heat pumps but also electricity, gas or oil, VMC ... Help in choosing and implementation, problem solving, optimization, tips and tricks ...
takata
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VMC and filtration class F9 - Electrostatic filters




by takata » 04/11/13, 13:25

Hello everyone !

Being on the verge of starting the renovation of our future house, we are studying the idea of ​​equipping it with a dual-flow VMC system.

After having scoured all the controversies on the subject on the net, we maintain this option as far as it is possible for us to be equipped with an installation ensuring excellent filtration.

We live in the center of Brussels, without doubt the most diesel-engineered capital in Europe, hello fine particles!

The maximum pollution thresholds recommended by Europe are very often exceeded there, so we are aiming for a minimum class F9 filtration !


Hence the following questions :


- what to think of electro-static filters presented as being able to ensure better filtration against fine PM2,5 particles?

- Generating a lower pressure drop, is their additional cost significant?
- Does this type of installation consume significantly more electricity?
- Is this type of filter easy to clean?

In the hope of finding answers to these somewhat pointed questions, I wish you a great day!

Nicolas
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phil53
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by phil53 » 04/11/13, 20:11

Rather than a CMV, I recommend a VMInsuflation
We can also do double flow but also pass the blown air through rudimentary sensors to preheat the air
For filters it doesn't change anything.
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by takata » 04/11/13, 22:54

phil53 wrote:Rather than a CMV, I recommend a VMInsuflation
.


Hello Phil,

thank you for your advice, but I fear that it will not be very efficient for our house ... which dating from the 20s will unfortunately never be properly waterproof :|
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by I Citro » 05/11/13, 00:26

This is precisely the interest of the VMI, it infuses more air into the home than it extracts ...

That said, my VMC double flow is configurable to put my home in overpressure, which I did.
When my joinery is changed (in total removal to obtain a seal which it currently lacks), I would then reassess the need for this overpressure.

For this, the unstoppable test is that of the blower door. : Arrowl:

Regarding F9 filtration, I don't know it to talk about it.
My filtration is only an F7, a little less fine and without electrostatic barrier.

I touched on the forum the question of filtration budget of my VMC DF
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by chatelot16 » 05/11/13, 01:21

this discussion has already started
https://www.econologie.com/forums/filtre-a-p ... 12684.html
it deserves to stick together

the advantage of the electrostatic filter is to support large amounts of dust while cleaning by itself ... rather good for gas and smoke cleaning

the downside is ozone production, more dangerous than dust

my favorite solution is rather the roll paper filter, with automatic unwinding as the filter gets dirty

I do not know any material of this kind in the trade ... it is just a principle that I use to filter gas, and which could also be manufactured in a dimension adapted to a vmc if there was a need

small advantage: the paper takes place each time the pressure drop reaches a determined threshold: the length of paper consumed allows pollution to be recorded

it is even possible to find the pollution history in the used paper roll
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by takata » 05/11/13, 13:26

Hello,

thank you, indeed, the overpressure is probably justified ...

I'm curious to see what I will give my first appointment with specialists for quotes ...

Since I live in Brussels (probably the most dieselized capital of Europe), it will be from F9 to H12 if nothing because be aware that there are no standards regarding residential ventilation !!

In the city center, a single coarse filter type G3 / G4 would be almost criminal as the installation would have the effect of maximizing the rate of hydrocarbon soot in the home ...

The concern is that an F9 filter begins to generate a lot of pressure drop (and yes, an effective filter ... it filters!)

Hence the interest of electro-static filters which generate very little pressure drop and ensure very high filtration performance.

Filters achievable even without too much difficulty are unfortunately not fine enough I think :|

I came across this article published as part of the Walloon Public Service's reflection work on + + waterproof homes and which is quite interesting : "Double-flow ventilation in buildings: a guarantee of health ... or illness? " http://clusters.wallonie.be/cap2020-fr/ ... &IDD=33316

The question of ozone production remains, but is it significant?

I have not yet found an answer to this question ...
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by chatelot16 » 05/11/13, 14:32

you also have to see where the air is drawn in

the simple vmc, where the air enters each window is catastrophic in the city center with the windows on the street

the vmc double flux is better because we can look for the best place to take the outside air
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by takata » 05/11/13, 21:16

chatelot16 wrote:you also have to see where the air is drawn in

the simple vmc, where the air enters each window is catastrophic in the city center with the windows on the street

the vmc double flux is better because we can look for the best place to take the outside air


Hi,

In fact the concern with fine dust like that of hydrocarbon (the worst .. Especially in town) is that they are everywhere! Vacuuming on the garden side or on the ground does not change much!
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by takata » 05/11/13, 21:17

chatelot16 wrote:you also have to see where the air is drawn in

the simple vmc, where the air enters each window is catastrophic in the city center with the windows on the street

the vmc double flux is better because we can look for the best place to take the outside air


Hi,

In fact the concern with fine dust like that of hydrocarbon (the worst .. Especially in town) is that they are everywhere! Vacuuming on the garden side or on the ground does not change much!
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takata
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by takata » 05/11/13, 21:18

chatelot16 wrote:you also have to see where the air is drawn in

the simple vmc, where the air enters each window is catastrophic in the city center with the windows on the street

the vmc double flux is better because we can look for the best place to take the outside air


Hi,

In fact the concern with fine dust like that of hydrocarbon (the worst .. Especially in town) is that they are everywhere! Vacuuming on the garden side or on the ground does not change much!
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