The high-low Temperature Test Chamber is the main equipment for temperature and humidity environmental tests. Mainly in the high-low temperature and humidity tests, evaluate the heat and humidity resistance of the products to ensure that all products can operate normally under all environmental standards. However, in the high-low Temperature Test Chamber environmental tests, if the temperature uniformity exceeds the allowable error range, Then the experimental data and test data cannot be used as the limit of high-low temperature test materials or product performance. What causes the temperature uniformity of the high-low Temperature Test Chamber to exceed the allowable error range?
here we come to find out:
1. The difference between the test objects of the high-low Temperature Test Chamber: If enough internal overall heat convection test samples are placed in the high-low Temperature Test Chamber, the influence of the internal temperature uniformity, that is, the temperature uniformity, will inevitably be affected to a certain extent. For example, if a luminous product is placed as a heat load, it can have a very large impact on temperature uniformity. In addition, products with high specific heat capacity, such as aluminum, will also cause too large errors.
2. Problems with the internal structure and space design of the high-low Temperature Test Chamber are also likely to cause uneven temperature in the Test Chamber. This level is mainly reflected in sheet metal design and sheet metal processing plants, such as the design of ventilation ducts, placement along heat pipes and output power of centrifugal fans. This will affect the temperature uniformity of the small box.
3. Because the high-low Temperature Test Chambers are not of the same structure, the temperature of the wall in the test room will be uneven, which will in turn affect the fluidity of the gas, resulting in uneven temperature.
4. Because the heat transfer coefficients of the front and rear, left, right, upper, lower, and six sides of the studio wall are different, some have drilling tests and inspections.
5. The door of the high-low Temperature Test Chamber is not tightly sealed, such as the gate leaks and the sealing strip is made seamless. Thus affecting the temperature uniformity of the working space
