کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7054704 | 1458021 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance analysis of an internally-cooled plate membrane liquid desiccant dehumidifier (IMLDD): An analytical solution approach
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Performance analysis of an internally-cooled plate membrane liquid desiccant dehumidifier (IMLDD): An analytical solution approach Performance analysis of an internally-cooled plate membrane liquid desiccant dehumidifier (IMLDD): An analytical solution approach](/preview/png/7054704.png)
چکیده انگلیسی
An internally-cooled parallel-plate membrane-based liquid desiccant dehumidifier (IMLDD) with cooling tubes inside the solution channels has been used for air dehumidification. The concept is similar to a three-fluid heat and mass exchanger containing processing air, liquid desiccant, and refrigerant streams. The processing air and the liquid desiccant streams flow in the neighboring channels, which are formed by the plate membranes. A row of the cooling tubes are installed in each solution channel to take away the absorption heat generated in the solution by absorbing the water vapor transferred from the processing air across the membranes into the solution. A lumped parameter model is established in a unit cell containing an air channel, a plate membrane, a solution channel, and a row of the cooling tubes, to study the heat and mass transports in the IMLDD. An analytical solution of the normalized governing equations is obtained based on the dimensionless parameters, which have their specific physical meanings. Sensible cooling effectiveness, dehumidification effectiveness, dehumidification rate, energy transfer rate of the air stream, and the ratio of the sensible heat transfer rate of the water stream to the energy transfer rate of the air stream are then calculated. Only a few operating conditions of inlet water temperatures and sensible heat capacity ratios from previous studies have been employed to validate the model. However more validations would be conducted in future under more operating conditions. It can be found that the performances of the IMLDD are largely improved when the water inlet temperature is decreased to keep the solution temperature always in a relatively small level. The water inlet temperature is recommended to be set as about 20â¯Â°C, which is somewhat smaller than the solution inlet temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 119, April 2018, Pages 577-585
Journal: International Journal of Heat and Mass Transfer - Volume 119, April 2018, Pages 577-585
نویسندگان
Si-Min Huang, Minlin Yang, Bing Hu, Shi Tao, Frank G.F. Qin, Wanliang Weng, Wenhao Wang, Jian Liu,