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Author Topic: Tumble dryer recycling heat  (Read 2054 times)
welshboy
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« on: June 29, 2008, 10:33:25 AM »

Why dont tumble dryers have a built in dehumidifier as an optional use to recycle dry heat to itself or the house
« Last Edit: June 29, 2008, 11:47:18 AM by welshboy » Logged
kristen
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« Reply #1 on: June 29, 2008, 02:39:36 PM »

Can their outlet be plumbed directly into a heat recovery and ventilation system? (I don't have one, but I'm thinking about adding one to a future extension)
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tony.
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« Reply #2 on: June 29, 2008, 02:53:14 PM »

my tumble dryer has no external connection to the outside world, cant remember the name you call them, but it has a container that colects water and needs emptying a few times

i keep the door open to the cupboard

tony
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dhaslam
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« Reply #3 on: June 29, 2008, 03:01:40 PM »

I don't think you can connect the output of a drier directly to HRV because it would fill up the ducts with water.  A condenser drier is OK and the extra energy they need is more than made up by the contribution to house heating.
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NickW
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« Reply #4 on: June 29, 2008, 03:28:18 PM »

When I very occasionally use the TD I inherited with this house its invariably in the winter time. I also have a dehumidifier which aside from its design purpose I use to harvest distilled water.

I run the TD and vent the extract into the kitchen with the dehumidifer running full wack. The heat from the electricity offsets heating costs anyway and I do this on economy 7 overnight (probably just using surplus french /British nooklear power.

The water has loads of uses - irons, washer bottles, window cleaning.
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Ivan
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« Reply #5 on: June 29, 2008, 04:52:58 PM »

dehumidifier water is also very handy for topping up lead-acid batteries.

Do the condenser driers use more or less electricity than conventional driers?

How about a solar - heated drier?!
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sleepybubble
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« Reply #6 on: June 29, 2008, 06:10:55 PM »

How about a solar - heated drier?!

erm... isn't that called a washing line?
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;-)
dhaslam
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« Reply #7 on: June 29, 2008, 06:23:32 PM »

About 15% more energy needed for condenser dryers.  But all of the heat is retained in the room.  This does not apply to water cooled versions, i.e. washer/dryers.

http://ths.gardenweb.com/faq/lists/laundry/2004120958010854.html
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Ivan
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« Reply #8 on: June 29, 2008, 07:51:58 PM »

Ah, that's a relief ours is a washer/dryer. Does that mean it uses more electricity or the same as a vented drier?
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northern installer
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« Reply #9 on: June 30, 2008, 03:51:16 PM »

we have a conventional tumble drier on e7,the exhaust is routed via 4m of semi rigid aluminium ducting before it exits through the wall;it gets warm rather than hot,but is at least returning some heat to the room;to get around condensation,the first metre is the standard plastic hose running to ceiling level,then the aluminium runs down hill all the way to outside. Seems to work ok.
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