What is the term for the amount by which the temperature of superheated steam exceeds the temperature of saturated steam at the same pressure?

The term "Degree of superheat" specifically refers to the measurement of how much hotter superheated steam is compared to saturated steam at the same pressure. Saturated steam is at equilibrium with water at a given pressure and represents the point at which steam begins to form. Superheated steam is steam that has been heated beyond this point without increasing its pressure, meaning it has additional energy.

The degree of superheat is calculated as the difference in temperature between the superheated steam and the saturated steam temperature at the same pressure. This property is crucial in thermodynamics and applications involving steam engines and turbines because superheating improves efficiency by allowing the steam to expand fully without condensing back into water.

Other terms listed may relate to concepts in thermodynamics but do not accurately define this specific measurement. Hence, the correct term for the excess temperature of superheated steam compared to saturated steam is indeed the degree of superheat.