Hot water cylinder question! Answered
Ok, so you have a hot water cylinder full of hot water... no matter in which way it is heated, how does it stay hot all the way until all the hot water is used up when you having a shower or whatever?... which seems like a full tank, piping hot until the end.
If you are replacing the hot water with cold water as it is being used would this not just regulate the water temp and make it colder straight away?
If you have a hot cup of tea, just add a little cold water... why does this not happen with a hot water cylinder?