[Greenbuilding] Spin dryer

[Ben Pratt]

I'm not going to try to do the math, but the diameter of the drum 
affects the centrifugal force, so the smaller drum of the spin dryer 
needs a higher rpm to get the same force of the larger drum spinning 
at a lower rpm.
Ben




At 3:54 PM -0500 7/5/07, Nick Pine wrote:
>RONALD CASCIO writes:
>
>>  Our Sears front loader spins at a very high speed and wrings out about 95%
>>  of the water. The laundry feels almost dry when it comes out.
>
>Wow. That sounds too good to be true. What's the model number? Have you
>tried measuring the weight of the clothes after the spin and subtracting the
>weight after they are completely dry and dividing by the dry weight to find
>the Remaining Moisture Content RMC = 100(Wspin-Wdry)/Wdry %? Fig 32 on page
>21 of this document:
>
>http://www.osti.gov/bridge/servlets/purl/842014-FdebHg/native/842014.PDF
>
>seems to show that GE is struggling to get a 65% RMC, ie Wspin = 1.65Wdry,
>eg 12 pounds of dry clothes would weigh 19.8 pounds right after the spin
>cycle.
>
>The laundry alternatives spin dryer should do better at 3300 vs 400-800 rpm.
>They say it can handle 12.2 pounds of post-spin wet clothing, at 2-4 spin
>dryer loads per washer load, but they don't spec the RMC.
>
>Nick
>
>
>_______________________________________________
>Greenbuilding email list
>List info: 
>http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
>List email: Greenbuilding at listserv.repp.org
>Managed by BuildingGreen, Inc. http://www.buildinggreen.com
>       publisher of Environmental Building News and GreenSpec(r)
>Hosted and archived by REPP / CREST http://www.crest.org


-- 
B  e  n  j  a  m  i  n   P  r  a  t  t
Professor
Department of Art and Design
University of Wisconsin-Stout
Menomonie, WI 54751
715 232 1537