I take long hot showers after bike rides, so I’m used to the feeling of the water going cold in a shower. What’s interesting to me is that this happens fairly quickly, seemingly toward the end of the supply of water that was hot when you began showering.
But i’ve been thinking about boilers and it’s not clear to me how this works. It occurred to me that maybe the tank only begins refilling with cool water from the pipes once it runs low — but the tanks in most places I have lived are in the basement and don’t have obvious pumps attached. If the tank weren’t full I don’t think you’d be able to maintain constant water pressure upstairs. At the same time, the hot water seems to stay hot for 30+ minutes, even as the tank is presumably refilling itself with cold city water. How does this work? Thanks!
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I dont know if its like here in Iceland in other countries, hot water comes from the ground at 90c
its around 70c when it comes into your house, used for heating the house, showers even washing machines that are designed to use hot water (they are getting rare these days)
so we have endless hot water, most blocks and houses have the front pavement heated with the run off from the radiators, its still 20c when leaving the house so its a second free use
dont having to shovel snow is very nice
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