The design lifetime of photovoltaic modules is approximately 20 to 30 years. The thermal performance test in reliability is a design verification of photovoltaic modules used in the simulation of the ground, allowing the module to operate for more than 20 years under normal climate conditions. The specification requires that the module be heated. Cycling test, wet freezing test, and damp heat test to confirm that the component can withstand the negative temperature effect after high temperature and high humidity, as well as fatigue and thermal failure caused by repeated changes in temperature, and to determine that the PV module is exposed to high humidity. The thermal stress and ability to resist the long-term penetration of moisture. 1. The sensitivity of different materials of photovoltaic components to light is different. For durable materials such as most paints and plastics, the short wavelength band of ultraviolet light is responsible for the aging of most polymers. However, for materials that are not so durable, such as some pigments and dyes, the long wavelength and even visible light of UV light can also cause serious aging. 2. When the temperature of the aging chamber of photovoltaic modules rises, the damage of light will increase. Although temperature does not affect the main photoreactions, it does affect secondary chemical reactions. Laboratory burn-in tests must provide precise temperature control, and the process of aging is usually accelerated by increasing the temperature. 3. Dew, rain, and high humidity in the aging box of PV modules are the main causes of moisture damage. Studies have shown that items placed outdoors are on a daily basis for a long period of time (an average of 8-12 hours per day in wet conditions. Studies have found that dew formed by moisture is a major factor in outdoor dampness. Dew is more harmful than rain because it is attached. The longer the material, the more serious the absorption of moisture, of course, the rain is also a great hazard to the material, rain will cause thermal shocks.For example, a car in a hot summer day, the temperature of the car suddenly due to showers Rapid cooling will cause shocks, and mechanical erosion caused by rain erosion will also accelerate the aging of materials, such as the coating of wood removed by the rain to remove the surface aging layer, exposing the unaged inner layer to sunlight, and further Ageing. One-piece Desktop Pneumatic Marking Machine One-Piece Desktop Pneumatic Marking Machine,Desktop Pneumatic Marking Machine,Desktop Benchtop Pneumatic Pipe Marking Machine,Desktop Pneumatic Dot Peen Marking Machine Jinan Luyue CNC Equipment Co., Ltd. , https://www.sdlycnc.com
One-piece desktop pneumatic marking machine is the original bench marking machine marking machine of motion control and marking machine head together, at the same time to embed the mini touch computer marking machine, pneumatic marking machine only external all-in-one desktop power supply and air supply can work normally, save the original data cable. All-in-one desktop pneumatic marking machines, more concise, convenient and practical.
The two-dimensional worktable of this model is made of precision mold. The original linear guide rail can realize self-lubrication and self-sealing, which can ensure the accuracy as before after working for a long time. The marking precision is high and durable. The structure of the lifting column type guide rail is stable and firm.
Integrated desktop pneumatic marking machine can be used for steel, copper, iron, aluminum, alloy, plastic and other metal and non-metal nameplate parts plane and cylindrical workpiece marking, widely used in auto parts, mechanical equipment, flanges, electrical equipment, metal pipe parts and other fields.