Question

Зависит ли давление от темпералуры пара

Answer 1

При повышении температуры давление повышается ( при прочих равных условиях).

Answer 2

Does pressure depend on the temperature of steam?

Yes, the pressure of steam is directly related to its temperature. This relationship is described by the steam saturation curve, which shows the pressure-temperature relationship for water and steam. As the temperature of steam increases, so does its pressure, and vice versa.

According to the ideal gas law, the pressure of a gas is directly proportional to its temperature when the volume and the number of gas molecules remain constant. This relationship is expressed by the equation:

P ∝ T

Where: - P is the pressure of the gas - T is the temperature of the gas

In the case of steam, which is the gaseous form of water, the pressure-temperature relationship is more complex due to the phase change from liquid to gas. As water is heated, it undergoes a phase transition from a liquid state to a gaseous state, resulting in the formation of steam. The pressure of the steam depends on the temperature at which this phase transition occurs.

At a given temperature, the pressure of steam is determined by the equilibrium between the liquid and gaseous phases. As the temperature increases, more water molecules gain enough energy to escape the liquid phase and enter the gaseous phase, increasing the pressure of the steam. Conversely, as the temperature decreases, the number of water molecules transitioning from the liquid to the gaseous phase decreases, leading to a decrease in steam pressure.

It's important to note that the pressure-temperature relationship for steam is not linear but follows a specific curve known as the steam saturation curve. This curve represents the conditions at which water and steam coexist in equilibrium. The steam saturation curve can be determined experimentally and is typically presented in steam tables or charts.

In summary, the pressure of steam is directly influenced by its temperature. As the temperature of steam increases, its pressure also increases, and as the temperature decreases, the pressure decreases. The specific relationship between pressure and temperature for steam is described by the steam saturation curve.