The size of the most of the current commercialized liquid cooling systems is apparently too large to be easily adapted in a notebook or a mini size desk top computer. This study incorporated the authors’ previous micro heat exchanger design with an extra slim pump concept proposed by a local manufacturer to develop a high performance miniature liquid cooling system. An integrated pump and cold plate assembly was also developed for further reducing the overall size of the system. In comparing to the commercial products, the test results show that the micro pump provides a higher maximum pressure head and maximum flow rate performance. The cold plate has the lowest thermal resistance at moderate and high flow rate region. And the performed of the entire liquid system is similar to that of the recently announced product. It is emphasized that the size of the present developed cold plate, pump and liquid cooling system is much smaller than that of all commercial products.

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