Boiler

I can’t turn around either; let you decide.

It’s a bit complicated; let me explain it to you. At a certain temperature, water reaches a saturated vapor pressure, which is its pressure value. Water absorbs heat on the water wall; since it is not an ideal medium, heat transfer will not be complete. The temperature of the water near the water wall is higher, exceeding the temperature corresponding to the pressure in the steam drum

When water is heated, it begins to boil when the temperature reaches the saturation temperature corresponding to the saturation pressure. So, are you saying that this saturation pressure is what causes water to produce steam on its own? ?

Let’s explain the definition of saturated vapor pressure: Saturated vapor pressure refers to the gas pressure (partial pressure) in a closed space, at a given temperature, when the liquid and gas phases of a certain substance coexist. At this point, the evaporation/condensation process reaches dynamic equilibrium.

The water wall is connected to the drum, but in reality the pressure of the water in the water wall should be slightly higher than that in the drum. This is because there are: the local resistance of the steam-water separator inside the drum, the flow resistance of the pipe through which the steam-water mixture is drawn out, the hydrostatic pressure difference due to the height difference between the water wall and the drum, and the flow resistance inside the water wall. I understand that the temperature of the water in the water wall should be slightly higher than that of the water in the drum, as the water in the water wall is at the saturation temperature corresponding to the actual pressure ； As the soda mixture flows toward the drum and the pressure drops, water and vapor remain at the saturation temperature corresponding to that local pressure ； Inside the steam and water space of the drum, the temperature is at the saturation temperature corresponding to the pressure in the drum. So, I think the temperature of the water in the water wall can be higher than that of the water in the drum.

Saturation pressure refers to the pressure of a gas when the rate at which molecules escape from the water is equal to the rate at which molecules condense back into the water, right? ? The boiling point is the temperature at which, when the saturated vapor pressure exceeds the pressure above the liquid, water molecules escape from the liquid. So, isn’t the saturated vapor pressure equivalent to the saturated pressure?

Oh, in that case, the boiling point occurs when the vapor pressure of water exceeds the pressure above the water, causing molecules to escape. It’s not like at the saturation temperature, where the molecules that escape must be equal in number to those that return to the liquid. So, is the boiling point simply the point at which molecules start to escape?

In actual operation, the generated steam is output for use by the device. There won’t be much time for them to escape the entanglement of condensation