Because the process of cleaning clothes with water and detergent is inefficient, laborious, and time consuming. Photo: Indoor drying: A typical tumble dryer in a laundry uses natural gas burners to discovering computers 2010 pdf your clothes inside a very large rotating drum. The burners, located at the bottom of the machine, create a steady updraft of hot rising air that floats up through hundreds of small holes in the drum.
So what exactly is involved in turning wet clothes back into dry ones? Photo: Right: Outdoor drying: When you hang socks outside to dry, you’re using energy from the Sun and the wind to evaporate and disperse the water they contain. It’s free to dry your clothes this way and you’ll find it helps them last longer compared to using a tumble dryer. Since you’re not using electricity to get things dry, it’s better for the environment too.
How much water is in wet clothes? Water is the world’s most versatile cleaner, but it’s amazing how much of it you can waste when you do the laundry. 50 percent heavier than they were when you loaded them into the machine. Before you can wear those clothes, or put them safely away in your cupboard, you have to get rid of that water. Think about that the next time you hang your wet socks to dry on your bedroom radiator.
Would you really want to hurl a quarter of a bucket of water in there? Photo: Two liters of water: This is how much you’ll find in your typical 4kg load of washing when you remove it from your clothes washing machine. It’s what you have to get rid of before your clothes are properly dry. If you dry your clothes indoors on radiators or a clothes rack, this water will end up floating around inside your home. How can you remove the water from your clothes?
The molecules in a liquid are closer and more tightly bound together, move more slowly, and have less energy than the molecules in a gas. If you want to turn a liquid into a gas, you need to put in quite a bit of energy so the liquid molecules can break apart, escape from the bulk of the liquid, and form a vapor above it. Putting heat into a liquid is an easy way to achieve this. Turning liquids into gases sounds like the stuff of chemistry labs, but it’s exactly the sort of science we all dabble in every day. Can you dry clothes outside on cold days? In a word, yes—but let me prove it to you, in theory and in practice.