The component hot wet freezing test chamber is mainly used to simulate the reliability testing of photovoltaic components under harsh weather conditions, verifying the long-term weather resistance of the components through testing items such as high temperature, high humidity, and temperature cycling. Mainly used in the research and production stages of monocrystalline silicon, polycrystalline silicon, and thin-film photovoltaic modules to ensure stable power generation performance even in harsh weather conditions.
Mainly used for thermal cycling, wet freezing cycling, high temperature and high humidity double 85 testing of photovoltaic modules, to confirm whether the modules can withstand the negative temperature effects after high temperature and high humidity, as well as fatigue and thermal failure caused by repeated temperature changes, to determine the thermal stress generated by photovoltaic modules exposed to high humidity and their ability to resist long-term moisture penetration.
The component hot wet freezing test chamber simulates the durability of materials under complex environmental conditions such as ultraviolet radiation, humidity, and low temperature through high and low temperature cycling, wet heat alternating, and wet freezing aging tests. The specific testing items include:
Thermal cycling test: Cycle within the range of -40 ℃ to 85 ℃ to evaluate the performance stability of the component under severe temperature changes.
Wet freezing test: After high temperature and humidity (such as 85 ℃, 85% RH), rapidly cool down to low temperature (such as -40 ℃) to test the component's tolerance to rapid changes in humidity and temperature.
Damp heat test: Run for a long time in a constant high temperature and high humidity (such as 85 ℃, 85% RH) environment to verify the component's resistance to moisture penetration.
working principle
Temperature control: achieved through a refrigeration system. During refrigeration, the refrigerant is compressed into a high-temperature and high-pressure gas state, which is then cooled by the condenser and transformed into a high-temperature and high-pressure liquid state. The refrigerant then evaporates and absorbs heat through the evaporator to achieve temperature reduction; When heating, the absorbed heat is released by changing the working mode of the compressor and evaporator to achieve temperature rise.
Humidity control: achieved through humidification and dehumidification. The device is equipped with a humidifier and a refrigerator inside. The humidifier achieves humidification by spraying water, while the refrigerator dehumidifies by evaporating condensed water. By controlling the working mode of both, accurate humidity control is achieved.
Circulating air control: achieved through fans and fresh air valves. The fan sucks in air to form a circulating airflow in the internal environment, maintaining the pressure and temperature inside the equipment. The fresh air valve controls the entry of external air to ensure the stability of the internal environment of the equipment.