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Home > Archive > Alternative Power sources > November 2005 > Re: Help HRV or ERV System?
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Re: Help HRV or ERV System?
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| nicksanspam@ece.villanova.edu 2005-11-19, 11:21 am |
| pdsmlebel <pdsmlebel@rogers.com> wrote:
>The humidity in my house is way too high (at all time and everywhere). In
>the summer, it is about 70-75%, some days 80% and in the winter, about 55-60%.
>When very cold, I get condensation in my windows in the winter time...
You seem to be blessed with an airtight Canadian house :-) Assuming you have
no unusual moisture sources in the house (rainwater leaks, and so on) you
might use a $69 window AC in summertime and a small exhaust fan in series
with a humidistat in wintertime.
Or change the window AC to dehumidification in wintertime by adding a box
around the outside with a $50 2 W (Honeywell 6161B1000) motorized damper
with a hinge h at the top that opens for AC and closes for dehumidification,
with horizontal partitions p and one-way passive plastic film dampers Di
and Do on each side of the AC in the window mount flanges. It might look
like this in the AC damper position, viewed in a fixed font:
--------
ceiling |
|
| window
|
|
---|---------------------h---damper--- (AC)
| |. | .
| |.Do f c| .
| |. a o| => .
| | n n| .
| | d| .
| |--------p------|--p--.
| .| condenser | .
| Di.| inlet air | <= .
| .| | .
------------------------- (dehum)
|
|
|
floor |
--------------
The exterior damper would close and the passive interior dampers would open
in the dehum (heat pump) position, as the condenser fan makes in-house air
pressure and flow above and out-house suction and flow below:
--------
ceiling |
|
| window
|
|
---|---------------------h............ (AC)
| |. | |
| / .Do f c| |
|/ . a o| => d
| | n n| a
| | d| m
| |--------p------|--p--p
| .| condenser | e
| Di. \ inlet air | <= r
| . \ | |
------------------------- (dehum)
|
|
|
floor |
--------------
It might look like this from the inside:
| |
| window |
|-------------------------------------------------|
| ----- | | |
| | | | | |
| | | | | |
| | Do | | | |
| | | | | |
| | | | | |
| --p-- | AC | --p-- |
| | | | | |
| | | | | |
| | | | Di | |
| | | | | |
| | | | | |
| | | ----- |
| | | |
-------------------------------------------------
It might look like this from above:
--------------------damper-----------------------
| |
| |
| p |
| |
| |
| ----------------------------- |
| | | |
| | | |
| | | |
| | | |
| p | | p |
| | | |
| | | |
| | | |
| | AC | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
-------------Do-------------------------------------Di---------
| |
| |
-----------------------------
Nick
| |
| Solar Flare 2005-11-19, 1:21 pm |
| Out of touch a little with the Canadian winter?
I have a 2400 sq ft Canadian home built to 1995
standards, sealed, continuous vapour barrier with every
lumber joint caulked, R22 walls R34-5? ceilings.
It takes about 30,000 BTU of A/C to keep this baby dry
and cool. Now I have three floors exposure of solar
gain on my south door. I also had a 24,000 BTU central
a/c unit ripped out because it wouldn't keep the temp
under 80F when more than 2 people visited.
$69 will only buy a few blocks of ice here.
<nicksanspam@ece.villanova.edu> wrote in message
news:dln8m1$cn@acadia.ece.villanova.edu...
> pdsmlebel <pdsmlebel@rogers.com> wrote:
>
time and everywhere). In[color=darkred]
the winter, about 55-60%.[color=darkred]
the winter time...[color=darkred]
>
> You seem to be blessed with an airtight Canadian
house :-) Assuming you have
> no unusual moisture sources in the house (rainwater
leaks, and so on) you
> might use a $69 window AC in summertime and a small
exhaust fan in series
> with a humidistat in wintertime.
>
> Or change the window AC to dehumidification in
wintertime by adding a box
> around the outside with a $50 2 W (Honeywell
6161B1000) motorized damper
> with a hinge h at the top that opens for AC and
closes for dehumidification,
> with horizontal partitions p and one-way passive
plastic film dampers Di
> and Do on each side of the AC in the window mount
flanges. It might look
> like this in the AC damper position, viewed in a
fixed font:
>
> --------
> ceiling |
> |
> | window
> |
> |
> ---|------------------
---h---damper--- (AC)
> | |. |
..
> | |.Do f c|
..
> | |. a o|
=> .
> | | n n|
..
> | | d|
..
> |
|--------p------|--p--.
> | .| condenser |
..
> | Di.| inlet air |
<= .
> | .| |
..
> ----------------------
--- (dehum)
> |
> |
> |
> floor |
> --------------
>
> The exterior damper would close and the passive
interior dampers would open
> in the dehum (heat pump) position, as the condenser
fan makes in-house air
> pressure and flow above and out-house suction and
flow below:
>
> --------
> ceiling |
> |
> | window
> |
> |
> ---|------------------
---h............ (AC)
> | |. |
|
> | / .Do f c|
|
> |/ . a o|
=> d
> | | n n|
a
> | | d|
m
> |
|--------p------|--p--p
> | .| condenser |
e
> | Di. \ inlet air |
<= r
> | . \ |
|
> ----------------------
--- (dehum)
> |
> |
> |
> floor |
> --------------
>
> It might look like this from the inside:
>
> |
|
> | window
|
>
|-------------------------------------------------|
> | ----- | |
|
> | | | | |
|
> | | | | |
|
> | | Do | | |
|
> | | | | |
|
> | | | | |
|
> | --p-- | AC
| --p-- |
> | | |
| | |
> | | |
| | |
> | | |
| Di | |
> | | |
| | |
> | | |
| | |
> | |
| ----- |
> | | |
|
> ----------------------------------------
---------
>
> It might look like this from above:
>
>
> --------------------damper--------------
---------
> |
|
> |
|
> | p
|
> |
|
> |
|
> | -----------------------------
|
> | | |
|
> | | |
|
> | | |
|
> | | |
|
> | p | |
p |
> | | |
|
> | | |
|
> | | |
|
> | | AC |
|
> | | |
|
> | | |
|
> | | |
|
> | | |
|
> | | |
|
> | | |
|
> -------------Do----------------------------------
---Di---------
> | |
> | |
> -----------------------------
>
> Nick
>
| |
| Ecnerwal 2005-11-19, 1:21 pm |
| In article <dln8m1$cn@acadia.ece.villanova.edu>,
nicksanspam@ece.villanova.edu wrote:
> Or change the window AC to dehumidification in wintertime by adding a box
> around the outside with a $50 2 W (Honeywell 6161B1000) motorized damper
Cheaper and simpler to change it to dehumidification by simply pulling
it out of the window and setting it up inside, ideally with the drips
going to a drain...
--
Cats, coffee, chocolate...vices to live by
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