SaM - Heat Stored in a Body • Thermal Capacitance

Remeber:

• ==Each body has a thermal capacitance==.
• The formula is:$C_{TH}=c\cdot V$Where:
  • $c$ is the specific heat.
  • $V$ is the volume.
• ==For representing a body with a certain temperature $T_0$ in a thermal lumped parameter system, we set $C_{TH}(t_0)=T_0$==.
• ==The “thermal capacitance” of the ambient temperature is represented by an “infinite capacitance”, or a current generator==.

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• $dQ$ needs to be brought to $\dot{Q}$, and the two measure unit are:
  • $[dQ]=\frac{W\cdot s}{m^3}$
  • $[\dot{Q}]=W$
  • That’s why we need to multuply for the Volume $V$ and then derivate.