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| themadhippy:
--- Quote ---I can't work out how anyone uses 100 litres to do a handwash --- End quote --- same here,i doubt i even use that in a day. |
| vk6zgo:
--- Quote from: themadhippy on December 28, 2020, 03:31:59 pm --- --- Quote ---I can't work out how anyone uses 100 litres to do a handwash --- End quote --- same here,i doubt i even use that in a day. --- End quote --- In the old days I referred to, our well only gave brackish water--OK for the livestock, but no good for humans. Our primary source of water was rainwater from one very large water tank, one a bit smaller, & one "100gallon" (approx460l) tank which we used as a "working source", topping it up as required, from the big tanks or, for a relatively short period at the end of Summer, by water hauled from a standpipe in the nearest small town in a "44gallon (Imp) /55Gallon (US)/200 litre" drum. On one occasion, we tried taking the big "100gallon" tank to the standpipe, but the logistic problems made that unworkable. I have " spelt out" the size of the drum we did use in all three systems of measures to give some sense of how much water "100 litres" really is------a whole lot! It is just as well that those researchers at the Uni of Bonn have jobs as academics---------they would be unemployable as dishwashers! |
| Zero999:
--- Quote from: themadhippy on December 28, 2020, 03:31:59 pm --- --- Quote ---I can't work out how anyone uses 100 litres to do a handwash --- End quote --- same here,i doubt i even use that in a day. --- End quote --- Do you not shower? --- Quote from: vk6zgo on December 28, 2020, 03:22:42 pm --- --- Quote from: tooki on December 28, 2020, 12:24:53 pm --- --- Quote from: themadhippy on December 28, 2020, 12:11:36 pm --- --- Quote ---Dishwashers use far less water (and because of that, far less energy) than handwashing --- End quote --- out of curiosity how much water?my washing up takes about 6L of water,4 cold and 2l boiled in the kettle,time taken about the same time as it takes the kettle to boil for the after dinner coffee --- End quote --- Modern dishwashers use about 13L per load, including the rinse. A typical person uses around 100 liters to wash and rinse the same amount of dishes by hand, according to a study by the University of Bonn. If you're actually washing and rinsing a dishwasher load's worth of dishes in 6L of water, then you are at the very fringes of the curve. --- End quote --- I place the first lot of things (usually cutlery), in the sink, partially fill with hot water, wash a batch, rinse them under the hot tap, & dry them with a teatowel. The rinsing water from each lot goes straight back into the sink, not down the drain. Each successive group of things, like glasses, cups, plates, & so on are done the same way. A large wash does mean I will need to lose some water, so as to not overflow, but not a lot. I don't like leaving detergent residue on dishes, so that is why I rinse them-----other people do not care, so leave that step out. A small sink like mine will probably be filled with around 6.0 litres of water, so allowing for a bit of loss, I am probably looking at using around 10 litres max. This also is used to wash down the sink area, the counter round it, & often the cooktop. As we have a Solar HWS, the water heating cost is negligible. There was a dishwasher installed in our kitchen when we bought this house, but we found it was an unending source of trouble, being out of service more than in service, & ditched it. I can't work out how anyone uses 100 litres to do a handwash, unless they are slavishly imitating how a machine does the job. Back in the day, when we lived in an area without mains power or water, Mum (or us kids) would wash up in a "washing up dish" about the same size as my sink. The water was heated in a biggish kettle on a wood stove. --- End quote --- I'm definitely with you on rinsing all the detergent off! I often use cold water to wash things which aren't greasy, such as coffee cups, cereal bowls and glasses. I find modern detergents work quite well, even with cold water. It does take a little longer to dry, but that's a non-issue, as it's just me, there's always room on the draining board. Using tea towels is very unhygienic. Hot water is for things caked in grease. I expect some people may think using cold water is less hygienic, than hot water, because they don't believe it kills germs, but the water would have to be scalding hot to do that and modern washing up liquid is a fairly good antiseptic. |
| JohnnyMalaria:
--- Quote from: tooki on December 28, 2020, 10:42:10 am --- --- Quote from: themadhippy on December 27, 2020, 10:50:48 pm --- --- Quote ---Who washes dishes by hand? I'll occasionally wash something that way if I need it right away or if it's too big to fit well in the dishwasher but I don't know anybody who regularly does their dishes by hand --- End quote --- you do now,dont own,never had nor ever want a dishwasher,total waste of energy, space and money --- End quote --- Dishwashers use far less water (and because of that, far less energy) than handwashing. I have no idea where some people get the idea that dishwashers waste energy, because the exact opposite is true. --- End quote --- That depends on how much washing up you have. I live by myself so I generate perhaps two plates, a mug, a saucepan or frying pan and a few utensils a day. It takes little water and about 5 minutes tops to do the daily washing up. The dishwasher takes at least an hour. The only time I use the dishwasher is to wash lab glassware since I may have 20 or more 500 ml bottles. But that's rare, too. I could so easily live without a dishwasher. Indeed, I'd live without a clothes dryer except it's forbidden to air-dry clothes outside where I live. |
| JohnnyMalaria:
--- Quote from: tooki on December 28, 2020, 12:24:53 pm ---A typical person uses around 100 liters to wash and rinse the same amount of dishes by hand, according to a study by the University of Bonn. --- End quote --- That's just FUD. Or people are so used to using dishwashers, they don't know how to do dishes by hand efficiently. I use about 10 liters. It's not difficult unless you are stupid. |
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