5 Modeling and Simulation ofMembrane-Based Dehumidificationand Energy Recovery Process

Zhiming Gao, Ph.D., Oak Ridge National Laboratory
Omar Abdelaziz, Ph.D., Oak Ridge National Laboratory
Ming Qu, Ph.D., Purdue University
This paper presents a first-order physics based model which reasonably accounts for the fundamental heat and mass transfer of vapor from humid air feed side to permeate side. This model comprises two membrane mass transfer submodels (i.e. microstructure model and performance map model); moreover, we adopt a segment-by-segment methodology for discretizing heat and mass transfer governing equations. The reported model is capable of simulating both dehumidifiers and energy recovery ventilators with cross-flow, counter-flow and parallel-flow. The model has been validated with measurements of a working device.

Register now!