The wet freezing test chamber (also known as the photovoltaic module wet freezing aging chamber) is a device used to simulate harsh temperature and humidity environments for reliability testing of photovoltaic modules and other materials. Its core functions include high and low temperature cycling, wet heat alternation, and wet freezing aging testing. A comprehensive testing equipment used to simulate the durability of materials under complex environmental conditions such as ultraviolet radiation, humidity, and low temperature.
working principle
Temperature control: achieved through a refrigeration system, which includes components such as a compressor, condenser, evaporator, etc. 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 cooling; 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.
Features
Strong environmental simulation capability: capable of simulating UV radiation, high and low temperature cycles, humidity, and wet freezing composite environments.
High control accuracy: Equipped with an intelligent control system and a smart touch screen, it can display real-time parameters such as ambient temperature, sample temperature, irradiation intensity, and cumulative dose. It supports constant value/program operation and also has data recording function, which can export data in CSV/EXCEL format.
Good safety performance: It has multiple protection mechanisms, such as power phase loss/undervoltage/overvoltage protection, emergency stop button, fan/refrigeration system overheating protection, light source short circuit/overcurrent protection, automatic door opening and turning off lights, etc. Some also come standard with protective goggles, helmets, protective clothing, etc., to ensure the safety of operators.
Application scenarios
Photovoltaic industry: used for module wet freezing cycle testing (such as alternating wet and heat at 85 ℃ after freezing at -40 ℃) to verify weather resistance.
Automotive electronics: Simulating the long-term effects of harsh weather conditions on onboard electronic components.
Research institutions: support basic research on material aging, battery performance, etc.