کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7045656 | 1457093 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel intermittent absorption cooling system based on membrane separation process
ترجمه فارسی عنوان
سیستم خنک کننده جذب متناوب روان بر اساس فرایند جداسازی غشا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The present work analyses an intermittent absorption cooling system using a hydrophobic porous membrane unit as desorber/condenser and powered by thermal solar energy. Experimental test runs were carried out in a membrane unit to experimentally determine the amount of refrigerant produced at different operating temperatures. With the obtained information, an intermittent absorption cooling system was modelled at a larger scale using information from real solar collectors and considering a 1â¯m2 membrane area. According to the experimental performance of the desorber/condenser unit, after 4â¯h of operation, the total amount of refrigerant produced was 14.50, 11.59 and 7.20â¯kg for desorber temperatures of 95.1, 85.2 and 75.1â¯Â°C, respectively. The designed solar system was composed of a 0.3â¯m3 storage thermal tank, and 30.2, 25.6 and 20.9â¯m2 of solar collector area for each desorber thermal level. According to the simulation of the absorption cooling system, evaporator temperatures of 18 and 14â¯Â°C were achieved for desorber temperatures of 75.1 and 85.2â¯Â°C, while evaporator temperatures of 17 and 12â¯Â°C were obtained at 95.1â¯Â°C. The COPs were 0.15, 0.21 and 0.26, which increased according to the increase in the desorber temperatures. Based on the clear desorber/condenser tendencies obtained from the refrigerant production, additional absorption conditions were calculated and may be useful for future designs. The lowest evaporator temperature was 6â¯Â°C when the initial LiBr concentration was 54.83% w/w, instead of 50.30% w/w at a temperature of 95.1â¯Â°C; however, the COP decreased 33%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 136, 25 May 2018, Pages 718-729
Journal: Applied Thermal Engineering - Volume 136, 25 May 2018, Pages 718-729
نویسندگان
J. Ibarra-Bahena, W. Rivera, R.J. Romero, M. Montiel-González, U. Dehesa-Carrasco,