Thermal mass#

Thermal mass block characterizes the ability of a body to keep and absorb heat.

The calculation of the temperature in the block is performed according to the following equation (1):

(1)#\[ Q=\mathrm{c}\cdot \mathrm{m}\cdot \frac{\Delta\mathrm{T}}{\Delta \mathrm{t}} \]

where:

\(Q\) - heat flow, [W];

\(c\) - material specific heat capacity, [J/(kg·ᵒC)];

\(m\) - mass, [kg];

\(T\) - thermal mass temperature, [℃];

\(t\) - time, [s].

Constant - constant specific heat capacity is used, specified by user in the field Specific heat capacity.

Table of values - the specific heat capacity obtained based on apolynomial built from the values entered by the user in Specific heat capacity curve and Temperature curve fields is used.

Material - the heat capacity is used according to the selected material in the associated block Materials properties.

1. Properties#

Property	Default value	Description	Units of measurement
Specific heat type: Constant; Table of values; Material	Constant	-	-
Specific heat capacity, available when selecting `Specific heat type` - `Constant`	840	-	\(\frac{J}{kg} \cdot\)℃
Mass	10	-	kg
Initial temperature	20	-	℃
Specific heat capacity curve, available when selecting `Specific heat type` - `Table of values`	903.7;951.3;991.8;1036.7;	The format for completing the field: 903.7;951.3;991.8;1036.7;	\(\frac{J}{kg \cdot К}\)
Temperature curve, available when selecting `Specific heat type` - `Table of values`	26.85;126.85;226.85;326.85;	The format for completing the field: 26.85;126.85;226.85;326.85;	℃
Material property, available when selecting `Specific heat type` - `Material`	-	-	-

Parameters	Input/Output	Description	Units of measurement	Port type
Input	Input	-	-	Heat exchange
Output	Output	-	-	Heat exchange

In order to see the connection capabilities of the block, you need to go to page Description of block ports

Examples of using this block can be found in the following sections:

Tutorials

Library	Tutorial name
Heat exchange	Transient thermal conductivity in rods made of different materials; Transient thermal conductivity in a steel rod; Cooling of the part after heating in the furnace

How-to guides

Section	Guide name
Life upport engineering	Development of room thermal state model
Electrical equipment	Creating a battery management system