Oxygen bomb calorimeter is a key instrument for accurately measuring the calorific value of the combustion of substances. Its principle is based on the law of conservation of thermodynamic energy, and the core focuses on the accurate measurement of the heat released by the combustion of substances.

In the operation of the instrument, the core step is to fully burn the sample in a high-pressure pure oxygen environment. The sample to be tested is placed in a stainless steel crucible of an oxygen bomb, filled with 2.5-3.0 MPa of pure oxygen, and then ignited to trigger a combustion reaction. At this time, the sample reacts violently with oxygen to release all combustible heat, and the combustion process is completed in a closed oxygen bomb, which can avoid heat loss and ensure that heat is collected completely.

Heat transfer and measurement are key steps in the principle. The heat released by combustion is quickly transferred to the oxygen bomb body and then to the outer water bath system. The instrument is equipped with a high-precision temperature sensor, which can capture subtle changes in the temperature of the water bath in real time. According to the heat calculation formula, combined with the specific heat capacity, mass and temperature change value of the water, the total heat released by the combustion of the sample can be accurately calculated, and the final calorific value of the substance can be converted.

The design of the oxygen bomb calorimeter guarantees the measurement accuracy. The oxygen bomb is made of high-strength alloy steel, which can withstand high pressure and prevent leakage during combustion. The water bath system has good constant temperature and thermal conductivity to ensure uniform heat transfer. The temperature measurement system has high accuracy and can capture small temperature fluctuations and reduce errors.

With this principle, oxygen bomb calorimeters are widely used in coal, petroleum, chemical and other industries, providing reliable data for energy quality testing and product calorific value calibration. They are indispensable professional equipment in the field of energy testing.