Conjugate heat and mass transfer in an internally-cooled membrane-based liquid desiccant dehumidifier (IMLDD)
Conjugate heat and mass transfer in an internally-cooled membrane-based liquid desiccant dehumidifier (IMLDD)
复制标题
内冷膜液体干燥剂除湿机 (IMLDD) 中的共轭传热和传质
DOI：
10.1016/j.memsci.2016.02.026
复制
发表时间：
2016-06
影响因子：
9.5
通讯作者：
Yang Minlin
中科院分区：
文献类型：
--
作者：
Huang Si-Min;Zhong Zhanrong;Yang Minlin
采用内冷式膜基液体除湿器（IMLDD）进行空气除湿。IMLDD是一种带有冷却通道的平行板膜接触器。进料空气和溶液流在交叉流布置中通过选择性渗透膜分离。水沿着塑料板表面垂直沿着流动以形成下落的膜，而扫气则在膜上流动。假设流体流动是流体动力学充分发展的，同时发展热和浓度。建立了流体的动量、能量和质量输运方程，并采用有限体积法求解。通过数值计算，得到了膜表面、塑料板表面和冷却通道界面上自然形成的边界条件。这是一个共轭问题。然后，基于自然形成的边界条件，计算并实验验证了沿通道的周边局部和平均Nusselt和舍伍德数沿着。可以发现，塑料板表面和界面边界条件接近于均匀温度（浓度）条件。充分发展的Nusselt数和舍伍德数的IMLDD是约2-3%小于绝热的。
An internally-cooled membrane-based liquid desiccant dehumidifier (IMLDD) is employed for air dehumidification. The IMLDD is a parallel-plate membrane contactor with cooling channels. The feed air and the solution streams, in a cross-flow arrangement, are separated by selectively permeable membranes. The water flows vertically along the plastic plate surfaces to form falling films, while the sweep air flows over the films. The fluid flows are assumed hydrodynamically fully developed, while developing thermally and in concentration. The equations governing the momentum, energy and mass transports for the fluids are established and solved by a finite volume approach. The naturally formed boundary conditions on the membrane surfaces, plastic plate surfaces, and interfaces in the cooling channels are numerically obtained. It is a conjugate problem. The peripherally local and mean Nusselt and Sherwood numbers along the channels based on the naturally formed boundary conditions are then calculated and experimentally validated. It can be found that the plastic plate surface and the interface boundary conditions are close to a uniform temperature (concentration) condition. The fully developed Nusselt and Sherwood numbers for the IMLDD are about 2–3% smaller than those for an adiabatic one.
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影响因子：
15.9
作者：
J. Woods
通讯作者：
J. Woods
DOI：
10.1016/0016-0032(51)91075-7
发表时间：
2007
期刊：
--
影响因子：
--
作者：
P. Lettieri;T. Elson
通讯作者：
P. Lettieri;T. Elson
影响因子：
11.2
作者：
Das, Rajat Subhra;Jain, Sanjeev
通讯作者：
Jain, Sanjeev
影响因子：
10.4
作者：
J. Woods;E. Kozubal
通讯作者：
J. Woods;E. Kozubal
DOI：
10.1016/j.ijheatmasstransfer.2006.06.025
发表时间：
2007
影响因子：
5.2
作者：
Li-Zhi Zhang
通讯作者：
Li-Zhi Zhang