Steam tables indicate pressure units in which of the following?

Steam tables are vital tools used in thermodynamics to provide data on the properties of steam and water at various pressures and temperatures. The units of pressure indicated in steam tables are commonly expressed in kilopascals (kPa). This is because kilopascals are a standard unit of pressure in many engineering applications, including those related to boilers and steam systems.

Kilopascals are derived from the pascal, which is the SI unit of pressure defined as one newton per square meter. Using kilopascals in steam tables allows for a convenient scale that aligns with the typical pressure ranges found in steam systems, making the tables user-friendly for engineers and technicians in the power engineering field.

In contrast, newtons and kilonewtons refer to units of force, which do not apply to pressure measurements. Kilojoules are units of energy, not pressure, and therefore are also not relevant in the context of steam tables. Hence, the choice of kilopascals as the correct answer underscores the importance of aligning units with industry standards and the specific context of steam systems.