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closed dryer heat exchanger? cade.robinson 03-25-2008
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Posted by on March 25, 2008, 3:02 pm
I have been looking for something that probably doesn't exist for
reasons I don't know.

I am trying to find out if there is such a thing as a heat exchanger
for a dryer that would attach like a humidifier to a furnace?

I have read MANY posts and articles about just piping the exhaust of
the dryer into the house and how bad that is with lint and moisture.

What I am looking at is something like an air-air exchanger where each
"circuit" is closed.

So the dryer would still exhaust outside but on the way it would flow
through a box that is on the cold air return of a furnace. The
furnace would suck air through the box and collect some of the heat.

Just curious if anyone has ever seen anything like this, if it is even
feasible, and what issues this would cause?

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Posted by RBM on March 25, 2008, 3:57 pm

>I have been looking for something that probably doesn't exist for
> reasons I don't know.
>
> I am trying to find out if there is such a thing as a heat exchanger
> for a dryer that would attach like a humidifier to a furnace?
>
> I have read MANY posts and articles about just piping the exhaust of
> the dryer into the house and how bad that is with lint and moisture.
>
> What I am looking at is something like an air-air exchanger where each
> "circuit" is closed.
>
> So the dryer would still exhaust outside but on the way it would flow
> through a box that is on the cold air return of a furnace. The
> furnace would suck air through the box and collect some of the heat.
>
> Just curious if anyone has ever seen anything like this, if it is even
> feasible, and what issues this would cause?

Here's a thing you can use with an electric dryer, to provide warm moist air
in the house. I wouldn't use it for other than winter months:
http://www.improvementscatalog.com/home/improvements/75991-indoor-dryer-vent.html



Posted by AZ Nomad on March 25, 2008, 5:34 pm

>>I have been looking for something that probably doesn't exist for
>> reasons I don't know.
>>
>> I am trying to find out if there is such a thing as a heat exchanger
>> for a dryer that would attach like a humidifier to a furnace?
>>
>> I have read MANY posts and articles about just piping the exhaust of
>> the dryer into the house and how bad that is with lint and moisture.
>>
>> What I am looking at is something like an air-air exchanger where each
>> "circuit" is closed.
>>
>> So the dryer would still exhaust outside but on the way it would flow
>> through a box that is on the cold air return of a furnace. The
>> furnace would suck air through the box and collect some of the heat.
>>
>> Just curious if anyone has ever seen anything like this, if it is even
>> feasible, and what issues this would cause?

>Here's a thing you can use with an electric dryer, to provide warm moist air
>in the house. I wouldn't use it for other than winter months:
>http://www.improvementscatalog.com/home/improvements/75991-indoor-dryer-vent.html


They suck. They invariably fill the room with dryer lint.

Posted by Bob F on March 25, 2008, 4:26 pm

>I have been looking for something that probably doesn't exist for
> reasons I don't know.
>
> I am trying to find out if there is such a thing as a heat exchanger
> for a dryer that would attach like a humidifier to a furnace?
>
> I have read MANY posts and articles about just piping the exhaust of
> the dryer into the house and how bad that is with lint and moisture.
>
> What I am looking at is something like an air-air exchanger where each
> "circuit" is closed.
>
> So the dryer would still exhaust outside but on the way it would flow
> through a box that is on the cold air return of a furnace. The
> furnace would suck air through the box and collect some of the heat.
>
> Just curious if anyone has ever seen anything like this, if it is even
> feasible, and what issues this would cause?

For an electric dryer, all you need to do is filter the exhaust and distribute
it somehow. A high efficiency furnace filter in an appropriate enclosure would
probably do the job without createing too much back pressure.

Don't do it with a gas dryer.



Posted by AZ Nomad on March 25, 2008, 5:35 pm

>>I have been looking for something that probably doesn't exist for
>> reasons I don't know.
>>
>> I am trying to find out if there is such a thing as a heat exchanger
>> for a dryer that would attach like a humidifier to a furnace?
>>
>> I have read MANY posts and articles about just piping the exhaust of
>> the dryer into the house and how bad that is with lint and moisture.
>>
>> What I am looking at is something like an air-air exchanger where each
>> "circuit" is closed.
>>
>> So the dryer would still exhaust outside but on the way it would flow
>> through a box that is on the cold air return of a furnace. The
>> furnace would suck air through the box and collect some of the heat.
>>
>> Just curious if anyone has ever seen anything like this, if it is even
>> feasible, and what issues this would cause?

>For an electric dryer, all you need to do is filter the exhaust and distribute
>it somehow. A high efficiency furnace filter in an appropriate enclosure would
>probably do the job without createing too much back pressure.

What it'll do is clog up within a few hours and then damage your dryer.



Page 1 of 3       1 2 3 > last >>
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