#### Energy Balances with Phase Changes: Screencasts

Overview of sensible and latent heats and how to account for phase changes in energy balances.

We suggest that after watching this screencast, you list the important points as a way to increase retention.

Provides an overview of latent heat. Calculates the heat required to vaporize and condense 100 mol of water at 100°C and atmospheric pressure.

We suggest that after watching this screencast, you list the important points as a way to increase retention.

##### Important Equations:

Overview of sensible and latent heats and how to account for phase changes in energy balances.

$\Delta H_m = \Delta U_m$

where $$\Delta H_m$$ is the enthalpy change when a solid melts, and $$\Delta U_m$$ is the internal energy change when a solid melts.

Sensible Heat:

$\Delta H = \int C_P dT$

where $$\Delta H$$ is the enthalpy change, $$C_P$$ is the heat capacity, and $$T$$ is temperature.

Latent Heat for vaporization:

$\Delta H = \Delta H_{vaporization}$

$\Delta H_{condensation} = – \Delta H_{vaporization}$