Experiments of Pool Boiling Heat Transfer Enhancement of Water-Based Magnetic Fluid

A contrast experimental study of the pool boiling heat transfer of water and water-based magnetic fluid was conducted to investigate the effect of water-based magnetic fluid on pool boiling heat transfer, and mechanism of heat transfer enhancement was analyzed. The experimental results showed that the boiling heat transfer coefficient of magnetic fluid was enhanced at least 2 times than that of water at the same heat flux; When applied magnetic field, the boiling heat transfer of magnetic fluid can be enhanced further, which is over 5 times than that of water. The analysis of the effect of a magnetic field on bubbles showed that the applied magnetic field caused the departure diameter of bubble to decrease, the bubble growth rate to rise and the frequency of bubble departure to increase.