کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6692057 501912 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator
ترجمه فارسی عنوان
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
A liquid-to-air membrane energy exchanger (LAMEE) is an energy exchange device that transfers heat and moisture between air and salt solution streams through a semi-permeable membrane which is permeable for water vapor but impermeable for liquid water. LAMEEs have been used as a dehumidifier/regenerator in air-conditioning systems. In this paper, the solution-side effectiveness are presented for a small-scale single-panel LAMEE when it is used to regenerate the solution flow. The solution-side effectiveness are very important in regenerators where the main focus is on the salt solution, and the solution properties (i.e. solution outlet concentration) are important. The small-scale LAMEE is tested under air dehumidification and solution regeneration test conditions using a LiCl solution at one NTU (i.e. NTU = 5) and three different Cr∗ values (Cr∗ = 2, 4 and 6). The results show that both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗. The solution-side latent effectiveness is lower for the regenerator in comparison to the dehumidifier (e.g. 43% lower at Cr∗ = 6). Also, the numerical results for a small-scale LAMEE which were presented in literature are used in this paper to evaluate the solution-side effectiveness of the LAMEE under different test conditions. The numerical results show that the difference between the air-side and solution-side latent effectiveness are negligible. Therefore, the air-side latent effectiveness can be used to evaluate the solution-side latent effectiveness of LAMEEs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 113, January 2014, Pages 872-882
نویسندگان
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