The disposal of waste heat from electronic equipment has become a major problem, which can both damage electronic components and mean that a lot of energy is wasted. Scientists at the University of California, Berkeley have developed a nanofilm capable of recovering waste heat from electronic devices that can be embedded inside computers, cars, or factories to recover energy from waste heat and generate electricity.
The current widespread energy recovery system generally operates on the principle of thermoelectricity and requires a high temperature difference. However, UC Berkeley’s scientific team hopes to develop a device that can recover internal low-quality waste heat and recover waste heat below 100 degrees Celsius. In order to achieve this goal, the research team developed a thin film based on the principle of pyroelectric energy conversion, which can operate in a lower temperature and lower temperature environment, which is an ideal material that can be applied to electrical components.
“We all want to find new energy sources, but it is also necessary to make better use of existing energy. These thin films can help us extract more energy from daily energy sources,†said researcher senior author Lane Martin.
The team built a prototype device that relies on a thin film thickness of 50-100 nanometers, capable of obtaining a pyroelectric energy conversion energy density of up to 1.06 Joules per cubic centimeter, a power density of 526 watts per cubic centimeter and a Carnot efficiency of up to 19%. This is the highest efficiency record in power generation devices that convert energy through pyroelectricity. The research says that the prototype equipment is being improved, and ultimately it is hoped that these thin films can be optimized for individual systems, creating devices that can efficiently recover waste heat and generate electricity.
High Velocity Powder-Actuated Tool is used for normal concrete not harder than C40. The nail initial velocity is very high as there is no piston but high pressure gas to push it.
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