Microcomputer automatic calorimeter principle introduction

Microcomputer automatic calorimeter is a commonly used calorimeter. In order to help you better understand and understand the use of calorimeter, we introduce the working principle of the system:

Microcomputer automatic calorimeter working principle At present, the national production calorimeter is mostly thermostatic. The working principle is generally to put the oxygen bomb loaded with the coal sample and oxygenated to the specified pressure into the inner cylinder to start the water circulation, so that the water temperature is stable, then the water is injected into the inner cylinder, and after the predetermined amount of water is reached, stirring is started to balance the water temperature of the inner cylinder to At a certain temperature, the temperature probe detects the water temperature and records it in the computer.

After the water temperature of the inner cylinder is stable, the control system indicates ignition ignition, and the coal sample rapidly burns under the combustion of oxygen. The heat generated is transmitted to the inner cylinder through the oxygen bomb, so that the inner cylinder temperature rises. When all the heat in the oxygen bomb is released, the temperature begins to drop. After the computer detects the drop in the water temperature of the inner cylinder, it is determined that the test of the sample is over. The system stops stirring and releases the inner cylinder water. The computer processes the result of the collected temperature data.

However, some microcomputer automatic calorimeters use pre-calibrated mathematical models to predict end-point temperatures based on temperature velocities over a period of time. Calculating the calorific value through data processing programs in software shortens the test cycle.

It is worth noting that some microcomputer automatic calorimeters have an external bobbin temperature control system and an external cylinder water temperature section system, which can keep the temperature of the entire calorimeter system and the external bobbin water temperature within a very small range.