GB/T 47188-2026Particles - Measurement of specific heat capacity - Adiabatic calorimetry (English PDF)

1 Scope

This document describes a method for measuring the isobaric specific heat capacity of micron-sized and larger particulate materials using adiabatic calorimetry.

This document applies to the measurement of isobaric specific heat capacity of particulate materials that do not undergo chemical reactions within the measured temperature range.

2 Normative references

This document has no normative references.

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Principles

Adiabatic heat measurement typically employs intermittent heating to determine isobaric specific heat capacity. first, a sample of mass m is heated to an initial temperature Ti.

Once thermal equilibrium is reached, a known amount of energy, Qin, is introduced into the sample to raise its temperature by deltaT (deltaT = Ti 1 - Ti). Heating is then stopped, allowing the sample to reach thermal equilibrium.

The temperature Ti reaches thermal equilibrium, and the above process is repeated continuously. Assuming the specific heat capacity of the sample does not change with temperature within deltaT, the specific heat capacity is determined...

The isobaric specific heat capacity cp(Tj) of the sample at temperature Tj[Tj=(Ti Ti 1)/2] can be obtained by formula (1).

cp(Tj)=

Qin mdeltaT (1) […]