HeatCapacitor

Lumped thermal element storing heat

Library

Thermal/HeatTransfer/Components

Description

This is a generic model for the heat capacity of a material. No specific geometry is assumed beyond a total volume with uniform temperature for the entire volume. Furthermore, it is assumed that the heat capacity is constant (indepedent of temperature).

This component may be used for complicated geometries where the heat capacity C is determined my measurements. If the component consists mainly of one type of material, the mass m of the component may be measured or calculated and multiplied with the specific heat capacity cp of the component material to compute C:

HeatCapacitor_equation1

Typical Values for cp at 20 degC in J/(kg.K):

HeatCapacitor_equation2

Parameters

    HeatCapacitor_0

  • C [J/K] : Heat capacity of element (= cp*m) (C): Scalar.
  • initType [-] : Type of initial value for [T,der_T] (0=guess,1=fixed) (initType): Vector of Size 2.
  • T_start [K] : Initial value for temperature of element (T_start): Scalar.
  • der_T_start [K] : Initial value for time derivative of temperature (= der(T)) (der_T_start): Scalar.

Ports

  • Port 1 at bottom position: implicit output fixedport numbered 1.

See Also