Sustainability 2016, 8(12), 1264; doi:10.3390/su8121264
Simplified Heat and Mass Transfer Model for Cross-Flow and Countercurrent Flow Packed Bed Tower Dehumidifiers with a Liquid Desiccant System
1
Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2
Multiflow Technology, Taichung 414, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Alessandro Franco
Received: 29 August 2016 / Revised: 15 November 2016 / Accepted: 21 November 2016 / Published: 3 December 2016
(This article belongs to the Section Energy Sustainability)
Abstract
A mathematical model is developed using the Matlab/Simulink platform to investigate heat and mass transfer performance of cross-flow and counterflow dehumidifiers with Lithium Chloride (LiCl) solution. In the liquid desiccant dehumidifier, the orthogonal polynomial basis is used to simulate the combined processes of heat and mass transfer. The temperature profiles on cross-flow and countercurrent flow dehumidifiers are demonstrated. The resultant counter flow air changes the temperature profile of the LiCl solution in the longitudinal direction because of the drag forces. In addition, when inlet airflow rate reaches 15 kg·s−1, the temperature effect becomes less obvious and may be reasonably negligible. Under these conditions, the air changes the design factor and determines the interfacial temperature. It is demonstrated that the mathematical model can be of great value in the design and improvement of cross-flow and countercurrent flow dehumidifiers. View Full-Text
Figure 1
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Hu, S.-C.; Shiue, A.; Chiu, Y.-S.; Wang, A.; Chen, J. Simplified Heat and Mass Transfer Model for Cross-Flow and Countercurrent Flow Packed Bed Tower Dehumidifiers with a Liquid Desiccant System. Sustainability 2016, 8, 1264.
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