We don’t have that problem and have a water heater (not tankless). I think they just do something different with the plumbing here in Japan most of the time.
The good old “parallel vs serial” patterns. The later being cheaper, it is used everywhere but in those places where the owner specifically ask for parallel because of knowing its advantages.
Would the order of things when its serial matter? Since moving our shower is the first thing to get hot water and the kitchen comes after, not really noticed it as too much of an issue although the kitchen tap will be slower when water is being used somewhere else. Which is probably the better way of prioritising it.
I’m not a plumbing expert (I got an electronic degree before going for CS), but I can extrapolate from my own experience.
If it does a bit like electricity, it comes from how much water the main line can let through. If it is sufficiently sized, and can accept enough water for both your tap and shower, all you’ll see is a pressure fluctuations (it will be divided per open tap). But if it is not big enough, the water will go to the shorter route first, which depending on the configuration may be the tap or the shower.
At my old man home, we are in the former case, which mean he often used what this comic shows to make sure we finish our shower if it gets too long to his liking (he is an asshole sometimes 😂).
Meanwhile, at my current home, the boiler is just next to the shower, so the shower takes priority.
The biggest difference with electricity though, is that you can put far more electricity than the wiring is made for, which can cause fires, which you cannot with water. 😅
Well you could push more water though but it requires higher pressure, I guess this is where water/electricity don’t compare very well as you could draw many amps (until things melt and burn) but you can’t pull more pressure.
Exactly. That what I added in an edit minutes after posting my answer 😆.
There are some way to add pressure (a pump, which is often used in high buildings), but it is rarely used for hot water.
We don’t have that problem and have a water heater (not tankless). I think they just do something different with the plumbing here in Japan most of the time.
The good old “parallel vs serial” patterns. The later being cheaper, it is used everywhere but in those places where the owner specifically ask for parallel because of knowing its advantages.
Would the order of things when its serial matter? Since moving our shower is the first thing to get hot water and the kitchen comes after, not really noticed it as too much of an issue although the kitchen tap will be slower when water is being used somewhere else. Which is probably the better way of prioritising it.
I’m not a plumbing expert (I got an electronic degree before going for CS), but I can extrapolate from my own experience.
If it does a bit like electricity, it comes from how much water the main line can let through. If it is sufficiently sized, and can accept enough water for both your tap and shower, all you’ll see is a pressure fluctuations (it will be divided per open tap). But if it is not big enough, the water will go to the shorter route first, which depending on the configuration may be the tap or the shower.
At my old man home, we are in the former case, which mean he often used what this comic shows to make sure we finish our shower if it gets too long to his liking (he is an asshole sometimes 😂).
Meanwhile, at my current home, the boiler is just next to the shower, so the shower takes priority.
The biggest difference with electricity though, is that you can put far more electricity than the wiring is made for, which can cause fires, which you cannot with water. 😅
Well you could push more water though but it requires higher pressure, I guess this is where water/electricity don’t compare very well as you could draw many amps (until things melt and burn) but you can’t pull more pressure.
Exactly. That what I added in an edit minutes after posting my answer 😆. There are some way to add pressure (a pump, which is often used in high buildings), but it is rarely used for hot water.