Recently, the reporter learned from Yangzhou University, College of Chemistry and Chemical Engineering, led by Yang Zhanjun, an associate professor of the university, has made important progress in key technologies for efficient back-passivation of MWT polycrystalline cells. The technology has dual advantages of high efficiency and low cost, and its large-scale application and development will likely change the current pattern of the entire PV market. According to reports, MWT back contact cell technology is the use of laser drilling, the back of the wiring technology, eliminating the front electrode of the main gate line. The current collected by the fine grid of the front electrode is led to the back through the silver paste in the hole, so that the positive and negative electrode points of the battery are distributed on the back of the cell, effectively reducing the light shielding of the front grid line, improving the conversion efficiency and reducing The loss of silver paste and minority recombination losses at the metal electrode-emitter interface. Automatic Sliding Door Operators High quality door residential automatic door opener
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Safety & Operation Devices of High Speed PVC Roll up Door:
In consideration of operation safety for high speed PVC roll up door, we provide the photo cell, and wireless safety airbag device as the standard safety device; And to enrich the operation methods of the high speed door, various options are provided such as manual button, transmitter, control box, radar sensor and inductive loop device. Different styles of transparent window are also available for better vision view.
Varied Running Speed of High Speed PVC Roll up Door:
Running speed of High Speed PVC Roll up Door is adjustable: Opening speed from 0.80m/s to 2.0m/s, and closing speed from 0.6m/s to 1.0m/s. Running speed adjustment can be achieved through inverter inside the control box, t to meet the actual needs.
Driving System of High Speed PVC Roll up Door:
Driving system is the core part for the high speed roll up doors. For the motors, we can provide multiple options for different demands, brands including SEW, SIEMENS, SNMA, SEJ and Servo Motor; All the motors are provided with manual brake, that offers emergency operation under power failure. Furthermore, motor power can be applied based on the real door size, in supply voltage 220V single phase and 380V three phase.
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MWT polycrystalline battery technology has made important progress