clothes dryer {coal fired}

Re: clothes dryer {coal fired}

PostBy: Pacowy On: Wed Jan 15, 2014 10:43 am

NJJoe wrote: ...a dryer when fed with hot water from a boiler on site will be limited to 212 degrees at maximum (give or take a few degrees either way). Whereas a gas or electric dryer can produce higher temps since the fuel is burned right there or electric elements are glowing locally. That should translate to higher temperatures in the dryer chamber and shorter clothes drying times than the temps from boiler water.


AFAIK modern dryers limit the operation of the heating elements so that the temperatures they produce in the air entering the drying chamber is comparable to the temperature that could be produced by a coal appliance, either directly or through a coil. On that basis, I wouldn't expect there to be a big difference in the drying times.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: clothes dryer {coal fired}

PostBy: Sting On: Wed Jan 15, 2014 10:50 am

If wishes were horses - beggars could ride

Dream on folks

Image
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: clothes dryer {coal fired}

PostBy: Pacowy On: Wed Jan 15, 2014 11:04 am

If all that is required is the quantity of 150-160 degree air that will fit through a 4" duct carrying a heat input of less than 40k btu/hour I think the skeptics should revisit the basics. A lot of things historically have been deemed to be impossible but simply were waiting for the right engineering. This looks like one of those.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

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Re: clothes dryer {coal fired}

PostBy: kstills On: Wed Jan 15, 2014 11:33 am

Personally, I don't believe that retrofitting a dryer cabinet would work, or work in the way most folks would want it to work.

In the research I've done, I see the Europeans because of space and energy limitations have developed drying techiques using full size closets and low heat to reduce the energy requirements for drying clothing. As I stated earlier, they also advocate the use of a dehumidifier to accelerate the drying rate, either inside the cabinet or simply placed alongside a clothes horse.

When the kids move our, the missus and I will be reclaiming a largish closet for use as a laundry/clothes storage area. My thought is to insulate one of the closets, install a small radiator and dehumidifier, and let the clothes dry on racks over a somewhat longer period of time then using a conventional dryer. I'm sure that will work, but I also won't be doing 7 loads of laundry in a days time and expecting to get all the clothes dry.

And I believe this is possible because of the HE washer that I have, I think the old top loaders would make any slow heat method an excercise in futility.
kstills
 
Stoker Coal Boiler: WL 110
Stove/Furnace Make: Leisure Line

Re: clothes dryer {coal fired}

PostBy: windyhill4.2 On: Wed Jan 15, 2014 12:08 pm

Well,we exercise futility all the time , as we have a top loader washer,& we dry our clothes on a parts tree sitting directly over floor heat vent, every time the hot air fan blows it helps dry,doesn't happen in 30 min.,but in the cold weather its hard to dry outside . Outside drying ??no heat,still drys ,yet if tumbling in a dryer with 150* air it won't dry ???the bumblebee can't fly either..not sufficient wing span.
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: clothes dryer {coal fired}

PostBy: Lightning On: Wed Jan 15, 2014 1:36 pm

The difference with outside drying is that yes, there is less heat but there is also an infinite amount of air to carry away the moisture.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: clothes dryer {coal fired}

PostBy: kstills On: Wed Jan 15, 2014 2:33 pm

windyhill4.2 wrote:Well,we exercise futility all the time , as we have a top loader washer,& we dry our clothes on a parts tree sitting directly over floor heat vent, every time the hot air fan blows it helps dry,doesn't happen in 30 min.,but in the cold weather its hard to dry outside . Outside drying ??no heat,still drys ,yet if tumbling in a dryer with 150* air it won't dry ???the bumblebee can't fly either..not sufficient wing span.



:lol:

I'm sure it would dry eventually. But think about how you would hook up a 150f constant coil off a boiler supply. You'll need to generate in excess of 10k btuh in order to dry your clothes out of a HE washer, and that is a big ass coil. Plus, I don't think you would be able to easily wrap a rotating drum with enough tubing to provide enough heat.


That's why I'm leaning towards the closet design. I can easily fit enough of some kind of tubing in that space to provide the heat I need, which if I use the dehumidifier in concert can be pumped directly into the living space.

And, no lint...
kstills
 
Stoker Coal Boiler: WL 110
Stove/Furnace Make: Leisure Line

Re: clothes dryer {coal fired}

PostBy: windyhill4.2 On: Wed Jan 15, 2014 3:27 pm

Wrap the drum ????? pull air thru a water to air heat exchanger into dryer using the dryer fan.That's just a reverse of how our house heats,big squirrel cage fan blowing thru the water to air exchanger into the duct work out the registers & up thru the clothing rack above the register,which in turn dries the clothing faster than them just hanging on the rack with no air movement,...Keep it Sensible Simple,course i'm just a simple minded person who is too dumb to complicate things,so they work for me,just my .0000000000000000000001
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: clothes dryer {coal fired}

PostBy: coaledsweat On: Thu Jan 16, 2014 10:09 pm

Good luck blowing 150 cubic feet of air a minute through a 212° coil and expecting it to raise the ambient air temp enough to dry your clothes before you beat them to death.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: clothes dryer {coal fired}

PostBy: EarthWindandFire On: Thu Jan 16, 2014 10:16 pm

Since wool is warm even when wet, do we really need to dry our clothes? ;)
EarthWindandFire
 
Hot Air Coal Stoker Furnace: Leisure Line Lil' Heater.
Hand Fed Coal Stove: Hitzer model 75. (sold)
Other Heating: Oil Furnace and Kerosene Heaters.

Re: clothes dryer {coal fired}

PostBy: Lightning On: Fri Jan 17, 2014 5:10 am

EarthWindandFire wrote:Since wool is warm even when wet, do we really need to dry our clothes? ;)


You wanna hear something even funnier than that?? I had a relative (I should point out - NOT a blood relative) that thought she could hang clothes out in the winter so they could,, wait for it,, oh hear it comes -

get FREEZE DRIED...... :woot:

Needless to say, that practice didn't last very long... toothy
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: clothes dryer {coal fired}

PostBy: windyhill4.2 On: Fri Jan 17, 2014 8:36 am

Well,maybe she is one of our relatives as we also hang our clothes out in freezing weather & have for many yrs.& will continue to do so,we aint city folk like some people.
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: clothes dryer {coal fired}

PostBy: Lightning On: Fri Jan 17, 2014 8:41 am

Yeah right. I'm sure you do lol
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: clothes dryer {coal fired}

PostBy: windyhill4.2 On: Fri Jan 17, 2014 8:48 am

Why would i lie about something that some people think qualifies the doer of this strange act as a mental case?Many times when we bring clothing in,it would almost stand on its own,but it doesn't take real long to finish drying hanging over a heat vent.
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: clothes dryer {coal fired}

PostBy: Lightning On: Fri Jan 17, 2014 9:02 am

So a tiny amount of water evaporates until it looses enough heat energy to freeze then you bring them in to thaw them out.

Key words in your response were finish drying. I'll rest my case on that note. :D
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

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