In August, the Hong Kong Polytechnic University is set to unveil its fourth-generation nano solar panel, marking a significant leap in solar technology. This new innovation not only reduces the panel's thickness by an impressive 70% but also boosts energy conversion efficiency by over one-third, offering enhanced cooling performance for solar-powered vehicles.
The journey of solar-powered air-conditioning systems began in 2009 when Professor Zheng Jiawei from the Department of Electrical Engineering at the university introduced the first generation of solar roof air-conditioning systems. These early systems were tested on taxis and minibuses, aiming to cut down annual carbon dioxide emissions.
However, the initial version had limitations. After absorbing sunlight for six hours, it could only provide about half an hour of cooling, which was far from ideal. Early trials revealed that during hot summer days, the system often failed to keep the bus cool, leading to uncomfortable conditions for drivers and passengers.
Despite these challenges, Professor Zheng emphasized that the technology has continued to evolve. By the time the third-generation panels were developed, they could absorb six hours of sunlight and deliver up to six hours of air-conditioning after the vehicle had stopped, significantly improving overall performance.
Now, with the introduction of nanotechnology in the fourth-generation panels, the design has been optimized to be just 1.5mm thick, making it much more compact and efficient. The system now achieves nearly 30% sunlight conversion efficiency, a major improvement that brings us closer to sustainable and practical solar solutions for transportation and beyond.
High-alumina rhodochrosite refractory bricks are made of selected high-alumina clinker, rhodochrosite, silica nepheline, combined with clay as the main raw materials, molded by high pressure and sintered at high temperature. The products have excellent tensile strength and good thermal shock stability.
Clay Bricks for Hot Blast Furnace,Masonry Bricks for High-temperature Fire Escape,Clay Brick for Hot Blast
Huixian Xinwei Refractories Co. , http://www.xinweirefractory.com