Thermal Capacitance

Built off the idea laid down in thermal circuits, Thermal Capacitance is essentially the idea of electrical capacitance applied to heat. That is to say it is a measure of a materials ability to store heat. It is the driving idea lumped capacitance method.

Where is density, is the volume of your solid (or control volume), and is the specific heat of the material.

Thermal capacitance is covered in section 5.1 of the textbook (page 192).