The walk-in high and low temperature test chamber is an experimental chamber used to test and simulate various environmental conditions. Its design purpose is to accurately control the temperature and humidity in a closed space so as to conduct strict environmental adaptability tests on the specimens. Main components Box structure: usually composed of inner and outer wall panels, insulation materials, sealed doors, etc. The inner and outer wall panels are generally made of stainless steel or cold-rolled steel plates, the insulation materials are usually made of polyurethane foam or glass fiber, and the sealed doors are generally made of rubber sealing strips or magnetic seals. Refrigeration system: mainly composed of compressors, condensers, evaporators, throttling devices, etc. The cooling in the box is achieved through the circulation of refrigerant. Heating system: usually electric heating is adopted, consisting of heating pipes, temperature controllers, etc. The heating of the heating pipes is used to achieve the heating in the box. Control system: generally microcomputer control or PLC control is adopted, with the functions of setting, displaying, recording and alarming parameters such as temperature, humidity, time, etc. Circulating air system: mainly composed of fans, air ducts, air filters, etc. Through the operation of the fan, the air in the box circulates to achieve temperature uniformity. Features Large-capacity design: Compared with traditional small high and low temperature boxes, walk-in chamber has a larger test space and can usually accommodate large chamber, complete vehicles or large batches of samples for testing. Flexibility and customization: It can be customized according to the special needs of customers, whether in terms of box size, temperature range, humidity control or structural design, it can be adjusted according to actual use needs. Precise temperature and humidity control: It is usually equipped with a high-precision temperature and humidity control system, which can maintain a stable test environment under extreme temperature conditions. The temperature fluctuation range is generally within ±0.5°C, and the humidity fluctuation can also be accurately controlled. Simulation of real environment: It can simulate various real extreme environments, such as hot, cold, high humidity, dry and other environmental conditions, and can detect the reliability and performance changes of products in different environments. Easy to operate and high safety: A safe and reliable access control system, emergency switch and automatic alarm device are designed. At the same time, it is equipped with a human-machine interface-friendly control system, making the operation easier.