کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11017575 | 1725872 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimum fin spacing of finned tube adsorber bed heat exchangers in an exhaust gas-driven adsorption cooling system
ترجمه فارسی عنوان
فاصله بین فواصل مطلوب مبدل های حرارتی تانک جاذب لوله در یک سیستم خنک کننده جاذب خروجی گاز
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کلمات کلیدی
سیستم خنک کننده جذب، بازیابی گرما زباله، فاصله بین فواصل بهینه، صرفه جویی در مصرف سوخت، حمل و نقل گرم و توده، رسانه های متخلخل،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Adsorption cooling systems (ACS) are considered as potential alternatives to traditional vapor compression air conditioning systems in heavy-duty vehicles. In ACS, adsorber bed heat exchangers (ABHEx) replace compressors and their appropriate design directly impacts the ACS performance. During operation, ABHEx undergo a large temperature swing to derive a refrigerant in ACS and their response time affects the dynamic behavior of ACS. In this study, a detailed three dimensional non-equilibrium model is developed to study the effects of heat and mass transfer in annular and longitudinal finned tube adsorber beds filled with zeolite-13x particles. The effects of fin height and spacing are studied on the system operating parameters to identify an optimum fin geometry. The simulation results show that a decrease in fin spacing leads to a decrease in the coefficient of performance (COP) and an increase in the specific cooling power (SCP), and no optimum value is observed for them in a specific fin spacing. However, variations of the total cooling power (TCP) maximize at a certain fin spacing. For longitudinal finned tube ABHEx, the optimum averaged fin spacing shifts from 5.4 to 6.8â¯mm for the adsorber beds with 10, 15, and 20â¯mm fin heights, while the optimum fin spacing of annular finned tube ABHEx changes from 5.0 to 6.4â¯mm. Furthermore, the results show that under similar dimensions and operating conditions, an ACS with annular finned tube ABHEx provides a 10% higher total cooling power than that with a longitudinal finned tube ABHEx at the optimum fin spacing. Using the ACS with optimized ABHEx in a truck would annually save about 370â¯L of fuel consumption and decreases greenhouse emissions by up to 738â¯kg CO2e.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 232, 15 December 2018, Pages 504-516
Journal: Applied Energy - Volume 232, 15 December 2018, Pages 504-516
نویسندگان
Behzad Golparvar, Hamid Niazmand, Amir Sharafian, Amirjavad Ahmadian Hosseini,