Small-scale single-panel liquid-to-air membrane energy exchanger (LAMEE) test facility development, commissioning and evaluating the steady-state performance

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• 作者：Davood Ghadiri Moghaddam ; Philip LePoudre ; Gaoming Ge ; Robert W. Besant ; Carey J. Simonson
• 关键词：Small-scale exchanger ; Liquid-to-air membrane energy exchanger ; Steady-state effectiveness ; NTU ; Heat capacity ratio
• 刊名：Energy and Buildings
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：66
• 期：Complete
• 页码：424-436
• 全文大小：992 K

文摘

A new test facility was developed to assess the performance of a small-scale single-panel liquid-to-air membrane energy exchanger (LAMEE). Mass and energy balances of the exchanger were computed for each test. The steady-state performance of the small-scale LAMEE was experimentally investigated under different operating conditions. Water was used as a liquid transfer media for the experiments and the exchanger was tested for air heating and humidifying (H&H), air cooling and humidifying (C&H), and air cooling and dehumidifying (C&D) at three different NTU values (2.5, 3.5 and 4.5) and Cr* = 7. The experimental results were compared to results from a numerical and two analytical models. In most cases, reasonable agreement among the experimental, numerical and analytical results was achieved except for the sensible effectiveness in the H&H and latent and total effectiveness in the C&H test cases. The results showed that the effectiveness of the small-scale LAMEE always increased with NTU for all test conditions. Sensible and latent effectiveness contour maps of the small-scale LAMEE were generated numerically for different inlet air conditions and for NTU = 3.5 and Cr* = 7, while the water inlet temperature was set at 22 ¡ãC. Finally, the effectiveness contour maps were compared with three experimental test conditions.