What is steam at its boiling point with no water particles present referred to as?

The term for steam at its boiling point with no liquid water particles present is known as dry saturated steam. This specific state of steam occurs when water has been boiled and transformed into a gas but has not yet absorbed additional heat that would elevate its temperature beyond the boiling point. At this state, the steam contains the maximum amount of energy it can hold without transitioning into a superheated state.

In practical terms, dry saturated steam is important in systems such as power generation and heating, where it's used effectively to transfer energy. This distinction is critical since any heat added to dry saturated steam would lead it to become superheated, which means it is above the boiling point and free from liquid presence, thus changing its thermal properties and applications.

Understanding this concept is fundamental in power engineering as it affects calculations and efficiency in steam systems. The other terms presented would imply different conditions: supersaturated steam refers to a condition where the steam is above saturation vapor pressure but is not commonly used in most engineering contexts. Superheated steam indicates steam that has been heated beyond its boiling point and may contain both vapor and thermal energy at a higher temperature. Vaporized can refer generally to the state of any substance that has transitioned from liquid to gas but lacks the precision of the thermodynamic terms