> the temperature of the water in the heat cavern will vary between +45 and +100 degrees
I'm not sure if I should be assuming Fahrenheit or Celsius? The article isn't clear on the units here.
I'm not sure if I should be assuming Fahrenheit or Celsius? The article isn't clear on the units here.
If the energy would just be lost otherwise, you might as well go all the way to 100℃?
That's at 1 atm, perhaps the water is a bit pressurized as well?
A bit further down there's this confusing quote though:
> District heat is stored in two rock caverns in Mustikkamaa. The temperature of the water in the caverns varies between 50 and 90 °C.
I suppose in such a large storage vessel, most of the water is naturally pressurised by its own weight. So most of it won't boil, even at 100°C, except right at the surface?