|
|
re: efficient european clothes dryers
28 nov 2005
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.
>70 minutes to this point, .21kwh. removed clothes and weighed, about
>1.5lb gain.
>replaced clothes for drying, 700w steady for 20 minutes. vent air is
>very gentle flow, barely warmer than room air. last 10 minutes is by
>design tumbling with heat off. consumption down to about 100w when
>drum is turning, about 150w with pump combined.
>
>total time 1:45. total consumption .45kwh. no detectable weight loss
>since spinning, but my scale was too useless to tell.
hmmm. the 5 pounds of clothes still weighed 6.5 pounds after "drying"?
the energy consumption was low, but this experiment seems inconclusive.
nick
|
|
