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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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Fundamentals: Washing lines

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      CommentAuthorSteamyTea
    • CommentTimeJan 12th 2015
     
    I rebutton up my duvet covers to stop the pillow cases getting in, works every time.:wink:
  2.  
    The amount of water removed by spinning depends not only on the spin speed, but also the diameter of the drum as it's the centripetal force that's important. Some of the high rpm machines have small drums so don't extract as much water as you'd think. Our big-ass American-sized machines squeeze every last drop out so that even four bath-sized towels dry in the tumble drier (in winter) in about 30 minutes.

    Reminds me of fun with an external spin drier when I was a child. Every year, we used to pick blackcurrants to make blackcurrant jelly and it was tedious to extract the juice. Dad had the brilliant idea of putting a bag of berries in the spin drier, thinking the force would crush them. Of course, it did crush them ... then the bag burst and juice spurted from the unconnected drain hose, covering the kitchen, much to the consternation of my mother. No jelly that year :(

    Paul in Montreal.
    •  
      CommentAuthorfostertom
    • CommentTimeJan 12th 2015 edited
     
    Posted By: andyman99the antiquated 2nd hand spin drier took out a further 600 ml of water
    That cd be life changing info - halve drying time and halve the risk from rain etc. Ignored one at the auction on Sat - maybe go back and see if it didn't sell!
    • CommentAuthorandyman99
    • CommentTimeJan 12th 2015
     
    Hmm but, to manually spin a full washing m/c load takes probably 3/4 separate loads in the spin drier. Say 4 or 5 mins each to get most of the water out. Its laborious to say the least. Interesting as an experiment, but I only use it during periods of prolonged bad drying weather when I know I will need to use the de-humidifier too.
    •  
      CommentAuthorfostertom
    • CommentTimeJan 12th 2015
     
    Posted By: SteamyTeao stop the pillow cases getting in
    Aha - one of life's great mysteries - why is it that all the small stuff is irresistibly drawn to the inside of the duvet cover? Is it that 'in' is on average a clear path but 'out' is on average well obstructed? Why so?
  6.  
    <blockquote><cite>Posted By: Paul in Montreal</cite>The amount of water removed by spinning depends not only on the spin speed, but also the diameter of the drum as it's the centripetal force that's important. Some of the high rpm machines have small drums so don't extract as much water as you'd think. Our big-ass American-sized machines squeeze every last drop out so that even four bath-sized towels dry in the tumble drier (in winter) in about 30 minutes.

    Paul in Montreal.</blockquote>

    Great point Paul. There must be other economies of scale with bigger machines too. Not too mention labour - every time i do a wash i have double what i can fit in. I wonder if we can get such machines over here.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 14th 2015
     
    Posted By: haplessDiyerI wonder if we can get such machines over hear.
    Yes, local laundrette :bigsmile:

    Posted By: fostertomAha - one of life's great mysteries
    Entropy :cool:
    •  
      CommentAuthorfostertom
    • CommentTimeJan 14th 2015 edited
     
    Whattt?

    Surely things enclosed in things is lower entropy (higher potential) than free-floating blurry disconnected things?
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 15th 2015
     
    Friction then :wink:
    •  
      CommentAuthorfostertom
    • CommentTimeJan 15th 2015
     
    No, but why do the smalls always end up inside the duvet cover - it's more than pure chance?
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 15th 2015 edited
     
    It's statistical probability.
    Take the extremes of an unbuttoned duvet cover and a sock.
    Think about the probability of the duvet cover ending up inside the sock as one probability Let's say that is a 1:10million change.
    Now look at the reverse, the sock in the duvet, say 1:3 chance. This one can be easily measured, the other one can't as we can't wash them enough.
    Now look at the aperture differences, Duvet had a big aperture and the sock a small one. Then look at how much each actually 'tumbles' when washed, all these things will lead you to the answer
    •  
      CommentAuthorfostertom
    • CommentTimeJan 16th 2015
     
    What about the probability of the sock remaining ourtside the duvet? much the highest, I'd a thought, yet the sock does seem to end up inside by default.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJan 16th 2015
     
    Posted By: SteamyTeaNow look at the reverse, the sock in the duvet, say 1:3 chance. This one can be easily measured
    Measure it.
    • CommentAuthormarktime
    • CommentTimeJan 16th 2015 edited
     
    More to the point, why is that socks come out as orphans?
    •  
      CommentAuthorfostertom
    • CommentTimeJan 16th 2015
     
    Or as identical pairs of non-identical twins

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