The composition and function of the flat plate thermal conductivity meter

The flat plate thermal conductivity meter is a precision instrument used to measure the thermal conductivity of materials. It is widely used in the research and testing of the thermal properties of various insulation materials, such as refractory fibers, insulation boards, insulation bricks, etc. This article mainly introduces the composition and function of the flat plate thermal conductivity meter.

1. The composition of the flat plate thermal conductivity meter

1. Heating furnace

The heating furnace is one of the core components of the flat plate thermal conductivity meter, responsible for providing a uniform and stable high temperature environment. It is usually made of high temperature resistant materials and can maintain a stable temperature during the test to ensure the accuracy of the measurement results. The internal temperature of the heating furnace is adjusted by a precise control system to meet the testing requirements of different materials.

2. Microcomputer measurement and control system

The microcomputer measurement and control system is the "brain" of the flat plate thermal conductivity meter, responsible for the automatic control and data acquisition of the entire measurement process. The system consists of a computer, control software, sensors and data acquisition devices. The operator sets the experimental parameters through the computer interface, and the system automatically performs the measurement according to the set program, and records the temperature, heat flow and other data in real time.

3. Cooling circulating water system

The cooling circulating water system is used to maintain the constant temperature state of the calorimeter system and prevent high temperature heating from interfering with the measurement results. The system usually consists of a water pump, cooling pipes, water tanks and other parts. The circulating water is used to form a constant cooling environment around the calorimeter to ensure the stability of heat conduction and the accuracy of measurement.

4. Calorimeter system

The calorimeter system is a key part used to measure the heat flow through the sample. It is usually composed of high-precision thermocouples or thermopiles, and the heat flow is calculated by measuring the temperature difference. The accuracy and stability of the calorimeter system directly affect the measurement results of the thermal conductivity, so its design and manufacturing requirements are very high.

5. Constant pressure water system

The constant pressure water system is used to ensure the stability of the cooling water pressure and prevent measurement errors caused by water pressure fluctuations. The system usually includes components such as constant pressure pumps, pressure sensors and control valves, and maintains the stable operation of the system by automatically adjusting the water pressure.

2. The role of the flat plate thermal conductivity meter

1. Determine the thermal conductivity of materials

The main function of the flat plate thermal conductivity meter is to determine the thermal conductivity of materials, which is an important indicator for evaluating the thermal performance of materials. Through the test of the flat plate thermal conductivity meter, the thermal conductivity of materials at different temperatures can be accurately known, thereby guiding the application and improvement of materials.

2. Study the thermal properties of materials

Through the test of the flat plate thermal conductivity meter, the thermal performance changes of materials under high temperature environments can be deeply studied. For example, whether the thermal conductivity of materials such as refractory fibers and insulation boards is stable at high temperatures, and whether there is obvious thermal attenuation phenomenon, these can be concluded through experimental data, providing a scientific basis for the research and development of materials.

3. Evaluate the performance of thermal insulation materials

The flat plate thermal conductivity meter can help engineers and researchers evaluate the performance of various thermal insulation materials and select suitable materials for application in actual projects, thereby improving energy efficiency and reducing operating costs. In addition, by testing the thermal conductivity of materials in production batches, the stability and consistency of product quality can be ensured to meet customer needs and the requirements of relevant standards.

As an important testing instrument, the flat plate thermal conductivity meter plays an important role in the field of materials science and engineering. Mastering the usage and maintenance techniques of the flat-plate thermal conductivity instrument is very important to ensure the accuracy of experimental results and the long-term stable operation of the equipment.