Measuring instrument for steady-state heat transfer properties of walls

The wall steady-state heat transfer property tester is a precision instrument specifically designed for measuring the steady-state heat transfer properties of wall materials. It combines modern sensing technology with computer data processing, providing researchers, architects, and engineers with an efficient and accurate method to evaluate the thermal performance of wall materials.

Appearance and structure

The steady-state heat transfer property tester for walls has a simple and elegant appearance, adopts an integrated design, has a compact structure, and is easy to operate. The shell is made of high-strength metal materials, which have good seismic resistance and durability. The main components of the instrument include heat source, cold source, temperature sensor, heat flow sensor, data acquisition and processing system, etc.

Function and Features

(1) Steady state measurement: This instrument can measure key thermal parameters such as thermal resistance and thermal conductivity of wall materials under steady-state conditions, providing accurate data support for energy-saving design of buildings.

(2) High precision sensors: equipped with high-precision temperature sensors and heat flow sensors to ensure the accuracy and reliability of measurement results.

(3) High degree of automation: Through computer control systems, the testing process is automated, greatly reducing the workload of operators.

(4) Data processing and display: The built-in data acquisition and processing system of the instrument can record and analyze test data in real time, and display test results through an intuitive software interface.

advantage

(1) Efficiency: The wall steady-state heat transfer property tester can quickly reach steady-state conditions, shorten testing cycles, and improve work efficiency.

(2) Accuracy: High precision sensors and advanced data processing technology ensure the accuracy of measurement results.

(3) Usability: The concise software interface and automated testing process make operation more convenient, reducing the professional requirements for users.

operational principle

The steady-state heat transfer property tester for walls works based on the principle of steady-state heat conduction. During the testing process, the instrument establishes a stable temperature gradient on both sides of the wall material through a heat and cold source. Temperature sensors and heat flow sensors measure the temperature difference on both sides of the material and the heat flow rate passing through the material, respectively. Based on measurement data, the instrument calculates key thermal parameters such as thermal resistance and thermal conductivity of the wall material.

Product composition

The steady-state heat transfer property tester for walls mainly consists of the following parts:

(1) Heat and cold sources: used to establish a stable temperature gradient on both sides of the wall material.

(2) Temperature sensor: A high-precision temperature sensor used to measure the temperature on both sides of wall materials.

(3) Heat flow sensor: used to measure the heat flow rate through wall materials.

(4) Data acquisition and processing system: responsible for collecting sensor data and conducting real-time processing and analysis.

(5) Computer software system: provides an intuitive software interface to achieve automated control and data display during the testing process.

2、 Instrument technical parameters

1. Temperature control range of the measuring box: 20-50 ℃

Temperature resolution: 0.0625 ℃

Temperature control fluctuation range: 0.01~0.1 ℃

2. Cold box temperature control range: -20~-10 ℃

Temperature resolution: 0.0625 ℃

Temperature control fluctuation range: 0.01~0.2 ℃

3. Temperature control range of protective box: 10-50 ℃

Temperature resolution: 0.0625 ℃

Temperature control fluctuation range: 0.01~0.1 ℃

4. Measurement box power measurement and control range: 4~400W, accuracy: 0.5%

5. Measurement box steady-state power fluctuation range: 1%

6. Testing efficiency:

Testing a component takes approximately 10-12 hours

7. Dimensions of the specimen: height x width x thickness 1460 x 1460 x (≤ 400) (mm)

8. Equipment dimensions: length x width x height 2600 x 1860 x 2088 (mm)

9. Measurement unit size: length x width 1200 x 1200 (mm)

10. Equipped with power: AC 380V, power 6kW, three-phase five wire system

11. Applicable site area: length x width x height 4000 x 5000 x 3000 (mm),

Laboratory door: height x width>2200 x 1600 (mm)

3、 The instrument meets the standards

The steady-state heat transfer property tester for walls is strictly designed and manufactured in accordance with international standards and relevant domestic regulations to ensure the accuracy and reliability of measurement results. This instrument meets the following standards and certifications:

1. ISO 8301:1991 Measurement method for steady-state thermal resistance and related characteristics of thermal insulation materials

2. ASTM C518-17 Standard test method for determining steady-state thermal conductivity performance using a heat flux meter method

3. GB/T 10294-2008 Determination method for steady-state thermal resistance and related characteristics of insulation materials

4、 Application field

The steady-state heat transfer property tester for walls is widely used in industries, construction, environmental protection, and scientific research. It can help researchers evaluate the thermal performance of new wall materials and provide a basis for building energy-saving design. At the same time, the instrument can also be used for quality control of building materials, ensuring that product performance meets relevant standards and regulatory requirements.

5、 Scope of application and limitations

Applicable scope

(1) Temperature range: -20 ℃~100 ℃

(2) Sample size: Can test wall samples of different sizes, with a maximum size of 1m x 1m

(3) Applicable materials: Various wall materials, such as bricks, blocks, insulation boards, etc

Limitations

(1) The sample should be flat and free of cracks to ensure the accuracy of the test results.

(2) During the testing process, the ambient temperature and humidity should be kept relatively stable to reduce the impact of external factors on the test results.

(3) The instrument should be regularly calibrated and maintained to ensure measurement accuracy and stable instrument performance.

In summary, the wall steady-state heat transfer property tester is a powerful, accurate and reliable measuring instrument, providing strong support for building energy-saving design, material research and development, and quality control. Its high-precision measurement, automation control, and intuitive software interface make operation more convenient and efficient, and are widely used in industries, construction, environmental protection, and scientific research.

6、 Operation precautions

When operating the steady-state heat transfer property tester for walls, users need to pay attention to the following points:

1. Safe operation: Before operation, ensure familiarity with the instrument's operating procedures and safety regulations. Avoid touching heat and cold sources during testing to prevent burns or frostbite.

2. Sample preparation: The tested wall samples should be prepared strictly according to the requirements, ensuring that they are flat, dry, free of impurities, and meet the testing size requirements.

3. Calibration and adjustment: Before starting the test, the instrument should be calibrated to ensure the accuracy of the sensor and measurement system. If necessary, appropriate adjustments should also be made to the testing environment, such as temperature, humidity, etc.

4. Data collection: During the testing process, it is necessary to ensure the stable operation of the data collection system, timely record and analyze the test data, in order to accurately evaluate the thermal performance of wall materials.

5. Troubleshooting: If any problems or abnormalities are encountered during the testing process, the test should be stopped immediately, and the instrument and testing environment should be checked. After troubleshooting, continue testing.

7、 Maintenance and upkeep

To ensure the long-term use and measurement accuracy of the wall steady-state heat transfer property tester, users should regularly maintain and upkeep it:

1. Regular cleaning: Regularly clean the instrument casing and internal components to ensure that there is no accumulation of dust and debris.

2. Sensor calibration: Regularly calibrate temperature sensors and heat flow sensors to ensure measurement accuracy.

3. Software updates: Regularly check and update the software system of the instrument to ensure its compatibility and stability.

4. Safety inspection: Regularly inspect the electrical connections and wiring of the instrument to ensure that there are no exposed wires or loose joints to prevent electrical failures.

8、 Market analysis and application prospects

With the continuous improvement of global requirements for building energy conservation and environmental protection, the market demand for wall steady-state heat transfer property testers is also steadily increasing. This instrument not only provides precise measurement tools for researchers, but also an important means for building material manufacturers and architects to evaluate and optimize the performance of wall materials.

In the future, with the continuous emergence of new wall materials and the improvement of building energy efficiency standards, the application range of wall steady-state heat transfer property testers will be further expanded. At the same time, with the advancement of technology and the intensification of market competition, the performance of the instrument will be further improved, and the price will also become more affordable, thereby promoting its widespread application in more fields.

9、 Conclusion

The steady-state heat transfer property tester for walls is an indispensable testing tool, which is of great significance for evaluating the thermal performance of wall materials, promoting the development of building energy conservation and environmental protection. Its high precision, high efficiency, and easy operation make it widely applicable in fields such as scientific research, industrial production, and quality control. With the continuous advancement of technology and the growth of market demand, we believe that this instrument will play a more important role in the future.