The operation and usage principle of the specific heat capacity tester of Hengaode Instrument for air adiabatic index

Mainly based on the fundamental laws of thermodynamics, the specific heat capacity is calculated by measuring the amount of heat absorbed or released by a material during temperature changes, and combining its mass with temperature changes. The core formula is( c = \\frac{Q}{m \\cdot \\Delta t} )Among them( c )For specific heat capacity,( Q )For heat,( m )For the quality of the sample,( \\Delta t )For temperature changes.‌

Overview of Core Principles

Instruments usually use calorimetry to ensure that the testing process is conducted in an adiabatic environment to minimize heat loss. Real time monitoring of temperature changes through high-precision sensors (such as thermocouples), while the heat metering module records the input or exchanged heat.‌

1 Common methods include mixing method (applicable to solids) and current calorimetry (applicable to liquids), and some instruments also support differential scanning calorimetry（DSC）By comparing the difference in heat flux between the sample and the reference material, the accuracy can be improved.‌

operating steps

‌Sample preparation‌Place the sample to be tested (such as block, sheet or powder) in the sample chamber to ensure that the quality is accurately known.‌

‌temperature control‌Use a constant temperature heating module (such as a constant temperature box or heating furnace) to program temperature control of the sample, while monitoring the initial temperature.‌

‌Thermal measurement‌Under adiabatic conditions, apply stable heat or mix the sample with a medium of known heat capacity (such as water or copper block), and calculate heat exchange through temperature changes.‌

‌data processing‌The instrument automatically collects temperature and heat data, calculates specific heat capacity based on formulas, and may take the average value through multi-point testing to improve accuracysex