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Microcomputer fully automatic calorimeter is a device used to measure the calorific value of material combustion, widely used for determining the calorific value of fuels such as coal, petroleum, biomass, etc. It calculates the calorific value of the fuel by burning the sample and measuring the heat released. The following is a detailed introduction to the microcomputer fully automatic calorimeter:
1、 Working principle
The working principle of the microcomputer fully automatic calorimeter is based on the quantitative combustion method and the law of conservation of energy. The specific process is as follows:
Sample preparation: Grind the test substance (such as coal sample, petroleum sample, etc.) to a standard fineness, weigh the standard mass of the sample, and place it in a crucible.
Oxygen bomb oxygenation: Place the crucible containing the sample into an oxygen bomb, seal it, and then fill it with high-pressure oxygen (usually 30 atmospheres).
Ignition and combustion: Place an oxygen bomb into a calorimeter and ignite the sample through an ignition device, causing it to burn in the oxygen bomb.
Heat measurement: During the combustion process, the heat released by the sample is transferred to the water in the calorimeter, causing the water temperature to rise. By measuring the change in water temperature, the total heat released by the combustion of the sample can be calculated.
Calculate calorific value: Based on the mass of the sample and the measured heat, calculate the high and low calorific values of the sample.
2、 Main structure
A microcomputer fully automatic calorimeter usually consists of the following main parts:
Oxygen bomb: used for sealing and burning samples, capable of withstanding high-pressure oxygen environments.
Calorimetry pool: used to accommodate oxygen bombs and water, measuring changes in water temperature during combustion.
Ignition device: used to ignite the sample in the oxygen bomb, usually using electric ignition method.
Temperature sensor: used to measure changes in the water temperature of the calorimeter, usually using high-precision thermocouples or platinum resistors.
Control system: including microcomputer controller, data acquisition system, and computer software, used to control the experimental process, collect temperature data, and calculate calorific value.
3、 Advantages and Characteristics
High precision measurement: By using high-precision temperature sensors and advanced measurement algorithms, the calorific value of the sample can be accurately determined.
High degree of automation: The experimental process is automated, including sample oxygenation, ignition combustion, temperature measurement, and calorific value calculation, reducing manual errors and work intensity.
Easy to operate: Through a user-friendly computer interface, operators can easily set up experiments and manage data.
Good protection: The oxygen bomb design strictly follows standards, ensuring standardized operation in high-pressure oxygen environments.
Wide applicability: It can measure the calorific value of various solid and liquid fuels and is widely used in industries such as coal, electricity, and petrochemicals.
4、 Application Fields
Coal industry: Determine the calorific value of coal and its products for coal quality evaluation and energy utilization research.
Petrochemical industry: Determine the calorific value of fuels such as petroleum and natural gas for fuel quality control and energy efficiency analysis.
Biomass energy: Determine the calorific value of biomass fuels for research on biomass energy development and utilization.
Environmental protection: Determine the calorific value of waste combustion for waste disposal and energy recovery.
Power industry: Determine the calorific value of power generation fuel for fuel management and power generation efficiency analysis.
5、 Precautions for use
Sample preparation: Grind the sample evenly to avoid measurement errors caused by uneven sample.
Oxygen bomb operation: Oxygen filling and ignition operations must be strictly carried out in accordance with specifications to ensure the sealing of the oxygen bomb.
Temperature measurement: Ensure the installation and calibration of temperature sensors to avoid temperature measurement errors.
Regular maintenance: Regularly inspect and maintain the various components of the calorimeter to ensure its normal operation and measurement accuracy.
epilogue
The microcomputer fully automatic calorimeter has been widely used in the field of fuel calorific value determination due to its high precision, automation, and easy operation. It provides reliable technical support for fuel quality control, energy utilization, and environmental protection. By proper use and maintenance, the performance of the calorimeter can be fully utilized, contributing to the development of related industries.
