کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626922 1455456 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatial variations of DCMD performance for desalination through countercurrent hollow fiber modules
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Spatial variations of DCMD performance for desalination through countercurrent hollow fiber modules
چکیده انگلیسی

To understand the spatial variations of the desalination behavior, a mathematical model is systematically formulated to simulate a direct contact membrane distillation (DCMD) with the hollow fiber module for desalination. The model equation for the entire module is derived by integrating the mass, momentum and energy balances on both feed and permeate sides with the permeate flux across the membrane. The property variations of feed and permeate sides along the length of the membrane module are thoroughly simulated. Sensitivity of the permeate flux and the thermal efficiency along the fiber length to operating conditions is further investigated over a range of temperature and flow rate. It is shown that both permeate flux and thermal efficiency decrease along the fiber length as the feed gets cooled down. Although the velocity variations of both streams are not big, the flow rate ratio of the hot feed to the cold solution has a dramatic impact on the distribution of the permeate flux and the thermal efficiency along the fiber length. The effect analysis could potentially be applied to optimal design and scale-up of hollow fiber DCMD modules.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 234, Issues 1–3, 31 December 2008, Pages 323-334