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Energy News for February


By wooferhound, Section Homebrewed Electricity
Posted on Mon Feb 25th, 2008 at 03:14:47 PM MST
efficient dryers, clothes that make power, jet fiies on biofuel, more

Energy efficent driers that use 40% less energy will be available by the end of the year
http://www.energy-daily.com/reports/Revolutionary_Green_Clothes_Dryer_Technology_999.html

Cloths that generate power from embedded nanowires
http://news.bbc.co.uk/2/hi/technology/7241040.stm

LED Lamp that is powered by weights lifted to the top
http://www.vtnews.vt.edu/story.php?relyear=2008&itemno=111

747 Jet flys using BioFuels, London to Amsterdam
http://www.energy-daily.com/reports/Virgin_test_flies_biofuel-powered_jumbo_jet_999.html

Energy News for February | 15 comments (15 topical, 0 editorial)

Re: Energy News for February (3.00 / 0) (#1)
by vawtman (vawtman(at)charter(dot)net) on Mon Feb 25th, 2008 at 10:58:17 AM MST
(User Info)

Hi Woof
 That clothes dryer insert seems really cool.I wonder how much it will cost?

 Seems almost homebrewable.




Re: Energy News for February (3.00 / 0) (#2)
by Countryboy on Mon Feb 25th, 2008 at 05:46:50 PM MST
(User Info)

<scratches head>

Why do people insist upon reinventing the wheel?

Try all they want, they just can't beat the simplicity and cost effectiveness of the ultra green clothes dryer - the old fashioned clothesline.

[ Parent ]



Re: Energy News for February (3.00 / 0) (#3)
by vawtman (vawtman(at)charter(dot)net) on Mon Feb 25th, 2008 at 06:14:13 PM MST
(User Info)

 Hi Countryboy
 My old fashioned clothsline is almost buried in snow and in -20 conditions its not fun.
 Do you do the laundry in the family?

[ Parent ]


Re: Energy News for February (3.00 / 0) (#4)
by DamonHD (d@hd.org) on Tue Feb 26th, 2008 at 01:38:08 AM MST
(User Info) http://www.earth.org.uk/

Our clothes horse in the kitchen (and/or with clothes over our radiator) is pretty effective.

I don't think we've had to use our drier since we started our power diet, and we have a 2 year old to add to our laundry pile!

Rgds

Damon

[ Parent ]



Re: Energy News for February (3.00 / 0) (#5)
by TomW on Tue Feb 26th, 2008 at 07:28:15 AM MST
(User Info)

Damon;

Yeah, here the dryer is just used mostly when something is needed immediately and to fluff the wrinkles out of certain clothes after line drying.

We even manage 30 or 40 feet of line inside in winter in this tiny house. With wood heat the moisture is a bonus In summer there is not even a thought to dryer use.

Sometimes ancient technology is the best solution. It does take more effort and time but it works well.

TomW

"Education consists mainly of what we have unlearned."--Mark Twain
[ Parent ]



Re: Energy News for February (3.00 / 0) (#6)
by picmacmillan (rmacmill@sympatico.ca) on Tue Feb 26th, 2008 at 10:14:22 AM MST
(User Info) http:// www.frecklefarmloghomes.com

cool stuff woof :)  havent been around much..just want to say hello....take care my friend...pickster
http://www.frecklefarmloghomes.com
[ Parent ]


Re: Energy News for February (3.00 / 0) (#12)
by Countryboy on Tue Feb 26th, 2008 at 05:36:47 PM MST
(User Info)

Tom,
  You bring up a good point.  When I was a kid, we'd put a pan of water on top of the stove to increase the humidity.  We did it to help keep lessen dry and cracking skin.  That moisture in the air also has another positive side effect.  Air that is more humid has more heat energy than dry air at the same temp.  Humid air feels a few degrees warmer.  
  Run a clothesline in the house, and not only do you save energy on drying the clothes, you also save energy in heating costs because of the humidity in the air.

[ Parent ]


Re: Energy News for February (3.00 / 0) (#14)
by vawtman (vawtman(at)charter(dot)net) on Fri Feb 29th, 2008 at 04:10:39 PM MST
(User Info)

 Well i sorta overvaporbarrierd(lol) and over insulated my house when i built it 10yrs ago.I rigged a 4in pipe bringing makeup air into the furnace.If not for that condensation and mold would thrive in cold temps.

 Sometimes i think the old farmhouses are better.

 Mark

[ Parent ]



Re: Energy News for February (3.00 / 0) (#7)
by Brian H on Tue Feb 26th, 2008 at 02:44:53 PM MST
(User Info)

The clothes dryer thingmie seems interesting, but try as I might, I can't see where the energy gains come from...? Is it a more efficient heat transfer mechanism? How can adding AN0THER thermal engine to your dryer INCREASE efficiency? If so, how? You're still using it to heat air, right? Don't you now also have to circulate the liquid? So where is the efficiency gain? Is it strictly for electric clothes dryers? Or is there a natural gas version as well? At first glance, I can't see anything but a gimmick. Hopefully, I'm wrong, someone enlighten me.

Cheers!
Brian
"Remember, I'm pullin' for ya'! We're all in this together!" - Red Green



Re: Energy News for February (3.00 / 0) (#8)
by ghurd on Tue Feb 26th, 2008 at 04:25:07 PM MST
(User Info)

It is probably a heat exchanger in the output to intake.
Re-use the same heat again.
G-

[ Parent ]


Re: Energy News for February (3.00 / 0) (#9)
by DanG on Tue Feb 26th, 2008 at 05:17:50 PM MST
(User Info)

Big commercial laundromat air to air heat exchangers post 7 to 15% efficiency gains depending on fuel and ambient temperatures... Electrolux of Europe has some online documentation if you want to google it.

The 'new' tech drier hydronics is just better control of a heat source to evenly heat a normal forced air clothes dryer system. You can bet there is a 'smart' motor spinning the drum & the forced air exhaust may be variable to better ramp up temperature of wet clothes to where it will shed moisture faster. The fact they are offering retrofit options they promise to install in thirty-minutes should warn us of something, just not clear as to what!



Re: Energy News for February (3.00 / 0) (#10)
by DanG on Tue Feb 26th, 2008 at 05:26:53 PM MST
(User Info)

hokeysmokes - their website has terms and conditions as the default page!

http://www.dryermiser.com/Home/tabid/4910/ctl/Terms/language/en-US/Default.aspx

I probably violated umpteen of their provisions talking about it before you voloate them by going to the page to see where we are getting sued from!

[ Parent ]



Re: Energy News for February (3.00 / 0) (#11)
by DanG on Tue Feb 26th, 2008 at 05:35:35 PM MST
(User Info)

Their 'terms' fail to provide a scroll bar in both firefox and internet explorer, selecting all and pasting into another document will yield six and one-half pages of legalese...

Let's all go out with a good solution in search of a problem in their honor!

[ Parent ]



Re: Energy News for February (3.00 / 0) (#13)
by ghurd on Wed Feb 27th, 2008 at 10:21:42 AM MST
(User Info)

I don't understand how they rate them.
Some must claim '7 to 15% efficiency gains' (I believe you), some claim to 'increase efficiency 25%', others claim 'heat-transfer efficiency of 98%' (link).
Swinging from 7 to 98%?

I figure a lot of it is based on cost.  When gas was cheap, it wouldn't make much sense to spend $500 on a ulta efficient heat exchanger for a consumer drier.  It would have made sense to spend $10 for 15%.

Now it might make sense to use a 100W compressor heat pump exchanger.
I expect it would retail under $100, mass produced.  Smaller, lighter, but not a lot different parts than the $89 dorm fridges.

http://news.thomasnet.com/companystory/502047

G-

[ Parent ]



Re: Energy News for February (3.00 / 0) (#15)
by dc2000 on Sat Mar 1st, 2008 at 04:26:44 PM MST
(User Info)

its a retro fit for the normal tumble dryer heater a bit like swapping an efficient oil filled heater for a convector heater cost expected to be £150 ish not sure on the efficiency claims though as there is no reclaim of heat
seems very homebrewable to me

http://www.journalhome.com/internet/53644/hydromatic-debuts-revolutionary-dryer-miser-clothes-dryer- technology.html



Energy News for February | 15 comments (15 topical, 0 editorial)
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Related Links
· http://www.energy-daily.com/re ports/Revolutionary_Green_Clothes_Dryer_Technology_999.html
· http://news.bbc.co.uk/2/hi/tec hnology/7241040.stm
· http://www.vtnews.vt.edu/story .php?relyear=2008&itemno=111
· http://www.energy-daily.com/re ports/Virgin_test_flies_biofuel-powered_jumbo_jet_999.html
· Also by wooferhound

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