In article .com,
says...
Nick Pine wrote:
wmbjk wrote:

http://www.crosslee.co.uk/cl847.html

Declared/published performance of the 847 A Class machine is:
With test conditions as stipulated in EN 61121- European standard.
Dry cotton load = 5kg, Room temperature 20C
Energy to dry the above load in A class mode = 2.5 kWh
Wetted condition of test load = 70% so 3.5kg of water or 7.7 lbs
Time to dry the test load under these conditions = 8hrs.

... 2.5kWhx3412/7.7lb = 1108 Btu/lb.

Machine is a Splendide 2000, vented model...

... it filled once and spent about 45 minutes washing. In this mode
it spends about 12 seconds turning one way, rests for 5, reverses.

The Philips machine I used in France rested about 5 minutes.

Next it enters spin mode, perhaps 10 minutes of various tumbling, spin
speed ramp-up and pumping. Power consumption tops out at about 400W
until it goes into scary-spin mode, about 500W steady for another 10 minutes.

Scary-spin mode sounds like fun. UK machines are rated by rpm.

800 rpm spin is basic, 1000 so so, top end ones do 1400 now. At 800
clothes come out saturated, at 1300 they come out no more than damp.
Theres really no need for a dryer if youve got a fast spin washer, but
for some reason driers have become common anyway.

(The old twintubs used to do around 2000-2500 rpm, but that was with a
much smaller drum.)

Machine design is an ongoing issue, getting them to do high spin speeds
without jumping about, pummelling other nearby appliances or dancing
across the floor. This is a common fault mode. Modern machines need to
have off balance load sensors so they dont try to spin up when not
distributed correctly, If they did, the drum housing would break. As
you can guess, heavy vibration is normal.

My Miele could spin at 1600 rpm, and the vibration was barely
perceptible. Of course, it had 150 lbs of concrete in its base...

--Gene