In steam tables, the heat in liquid is found by calculating:

The calculation of heat in liquid phase from steam tables centers around understanding the relationships between total heat, latent heat, and sensible heat. In this context, total heat refers to the sum of the heat contained in a substance, while latent heat is the heat absorbed or released during a phase change without a change in temperature. Sensible heat is the heat that causes a temperature change in a substance.

To find the heat in the liquid phase, you start with the total heat, which encompasses both the latent heat and the sensible heat. Therefore, by subtracting the latent heat from the total heat, what remains is the heat that is objectively useful in raising the temperature of the liquid, which is effectively the sensible heat portion.

This interaction captures the primary thermodynamic principles at play. Total heat combines contributions from both latent and sensible heats, and subtracting the latent heat allows a focus on the portion that manifests as a temperature increase in the liquid. Thus, calculating the heat in the liquid by determining total heat minus latent heat accurately reflects the amount of energy available for thermal management in liquid systems.