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| Transformation of used coffee grounds! | |||
| 작성자 | Department of External Cooperation | 작성일 | 2019-11-12 |
| 조회수 | 152 | ||
| Transformation of used coffee grounds! | |||||
 |
Department of External Cooperation |  |
2019-11-12 |  |
152 |
|
’Notice’ Study on heat sink production using coffee grounds
This research, conducted by Professor Yang Hyun-Kyung (Dept. of Electrical, Electronics and Software Engineering), Pukyong National University, verified the performance by comparing and analyzing the heatsinks made with coffee grounds and commercially available heatsinks. Heat sinks are devices that absorb heat generated by electronic components such as LEDs. Currently, commercially available heat sink products are mainly made of metal materials such as aluminum or carbon composite materials. In this study, Professor Yang made a heatsink by applying a foaming process to a slurry consisting mainly of coffee grounds. The myriad of holes in the foam (lead conductors) reduce the temperature by increasing the surface area where air can be contacted as much as possible. He applied the coffee grounds heat sink and aluminum and carbon composite heat sinks to LED luminaires, respectively, and conducted a comparative experiment on heat dissipation performance. Experimental results show that the coffee grounds heatsink showed nearly 92% performance of the aluminum heatsink and 123% compared to the carbon composite heatsink. Professor Yang recently signed a technology transfer contract with the LED light manufacturing company, which paid attention to the possibility of commercializing the heat sink manufacturing technology, and received a technology transfer fee of 50 million won. Professor Yang said, “The results showed that the coffee grounds heat sink satisfies the compressive strength, specific gravity, withstand voltage characteristics, and LED application. The coffee grounds heatsink is expected to be used for various electronic parts because of its eco-friendly materials and simple manufacturing process.” <Pukyong Today> |
