Heat and mass transfer of a circular porous moist object located in a triangular shaped vented cavity

Heat and mass transfer of a circular-shaped porous moist object inside a two-dimensional triangle cavity is investigated by using finite element method.The porous object is considered to be a moist food sample,located in the middle of the cavity with inlet and outlet ports with different configurations of inlet/outlet ports.Convective drying performance is numerically assessed for different values of Reynolds numbers(between 50 and 250),dry air inlet temperature(between 40 and 80℃)and different locations of the port.It is observed that changing the port locations has significant impacts on the flow recirculaitons inside the triangular chamber while convective drying performance is highly affected.The moisture content reduces with longer time and for higher Reynolds number(Re)values.Case P4 where inlet and outlet ports are in the middle of the walls provides the most effective configuration in terms of convective drying performance while the worst case is seen for P1 case where inlet and outlet are closer to the corners of the chamber.There is a 192% difference between the moisture reduction of these two cases at Re=250,T=80℃ and t=120 min.

多孔液体在气体捕集与分离领域的应用

多孔液体是指具有永久性孔隙的液体材料,其将多孔固体的有序规整孔道和液体的流动性等诸多优点相结合,在气体捕集与分离领域表现出巨大的应用潜力,成为新的研究热点。本文首先简单阐述了多孔液体的概念及分类,并总结了多孔液体形成的必要条件;然后分别详细综述了三类多孔液体的合成进展,并阐述了多孔液体在气体捕集与分离方面的应用,着重介绍了近五年的研究进展;最后对其现存的挑战及未来展望进行了总结。