Study on the high-performance evaporator for enhanced gasification via microbubble clusters

Evaporators play an important role in many industrial processes. They improve the vaporization efficiency of the evaporator, which is important in enhancing heat transfer and managing energy to improve the operational efficiency of the equipment. In order to explore the means of efficient evaporation, we investigated the effect of active pass-through microbubble clusters on the working liquid vaporization. By using a microbubble generator made of titanium mesh with microporous foam, microbubble clusters are generated to increase the core of vaporization and increase the rate of evaporation, thus enabling the optimisation of evaporation conditions and enhancing the effect of vapour output. Experiments were conducted to quantify the evaporation effect through the generation of microbubble clusters under different modes, different average porosities and different flow rates. Liquid evaporation changes were measured under continuous heating and no heating modes, respectively. The kinetic behaviour of the vapour bubbles was also photographed by a high-speed camera to explore the two-phase latent heat transfer-enhanced evaporation process in conjunction with microbubble clusters. The results show that the passage of microbubble clusters can increase the temperature drop of the working liquid and increase the amount of vaporization. With the increase of gas flow rate, the vaporization volume of working liquid showed an increasing trend of logarithmic curve. The mechanism study found that the introduction of microbubble clusters can increase the interface of vaporization, thus accelerating the vaporization and improving the evaporation efficiency.