摘要
This study experimentally investigated the performance of a novel micro-thermomagnetic pump system with a series connection. In this system, a heater and magnetic field are used to drive temperature-sensitive magnetic fluid with a high flow rate. Experiments were performed to examine the performance of a single thermomagnetic pump without the cooling chip, a single thermomagnetic pump with the cooling chip, and two thermomagnetic pumps connected in series. For the single pump, the flow rate increased with the heat flux from the heater and with the use of a cooling chip. When two pumps were connected in series, the flow rate achieved was considerably higher than that achieved with the single pump, and the highest flow rate achieved in the series configuration was 118.17 μL/min. However, as the heat flux increased, the energy efficiency of the series configuration decreased. The increase of flow rate resulted in the rapid heat exchange and made the overall microchannel temperature drop comparing with the single thermomagnetic pump. Finally, temperature measurements were conducted to calculate the heat dissipation of the aforementioned three configurations.