Dell has developed a concept model of a more sustainable notebook computer with smaller bio-printed circuit boards in different places for better heat dissipation. The Luna design also reduces the number of screws to four and uses a more sustainable aluminum chassis.
The design aims to reduce carbon impact and contribute to repairability.
"In the last year alone, we introduced closed-loop aluminum from scrap hard drives, used bioplastics made from tree waste in the papermaking process, and expanded the use of recycled carbon fiber to more than 1.2 million pounds," CTO Glen Robson Say. Dell Technologies' Customer Solutions Group. "Last year, we shared our vision for parallel innovative workflows to accelerate circular design, and today we shared the first prototype of these efforts, Concept Luna."
The proof-of-concept was developed in collaboration with Intel to make components immediately accessible, replaceable, and reusable, thereby reducing resource usage and retaining more recycled materials in the economy. "It was created to test what is possible, not to manufacture and sell. However, if all the design concepts in Concept Luna are realized, we expect the overall product carbon footprint to be reduced by 50%," Robson said.
He said that the motherboard may be one of the most energy-consuming components in the manufacturing process. The design reduces the total board area by about 75% by 5,580 square millimeters and a 20% reduction in components.
PCB uses flax fiber as the base material and water-soluble polymer as glue to replace the traditional plastic laminate. The water-soluble polymer is soluble. This allows recyclers to more easily separate the metal and components from the board.
This combination can reduce the carbon footprint of the motherboard by 50%, and smaller motherboards open up new design options.
"We completely reconsidered the layout of all internal components and relocated the smaller motherboard to the top cover to be closer to the larger surface area exposed to the cooler air outside," Robson said. "This is different from separating it from the battery charging device in the base, which can achieve better passive heat distribution and can completely eliminate the need for fans. These efficiencies can significantly reduce the overall power demand, which is comparable to those with advanced deep-cycle batteries. The small battery gives way, and the battery is still sufficient for daily use.
The aluminum chassis uses metal processed using hydroelectric power, and is stamped rather than cast, because it uses less energy and generates minimal waste.
"We need to go from use, then recycling, to use, to reuse many times, and then to recycle when the material is no longer used in its original form. This is what Luna's iteration of the concept does. It shows how things can happen Vision," he said.
In order to increase the convenience of maintenance, the design uses only four screws, reducing the time for disassembly, maintenance and reassembly of key components by approximately 1.5 hours. The palm rest components are also specifically designed to be easy to repair and reuse. The keyboard mechanism provides clean, easy separation from other components and simplifies recycling.
"The first step is to prove what is possible. The next step is to adopt these innovative sustainable design concepts and evaluate which ones have the greatest potential for expansion in our product portfolio," Robson said
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