کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8077146 | 1521473 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Energy consumption and optimization of internally cooled/heated liquid desiccant air-conditioning system: A case study in Hong Kong
ترجمه فارسی عنوان
مصرف انرژی و بهینه سازی سیستم تهویه مطبوع مایع خنک کننده / گرم مایع گرم: مطالعه موردی در هنگ کنگ
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کلمات کلیدی
سیستم تهویه مطبوع مایع خشک کن، داخلی گرم / سرد، شبیه سازی، بهینه سازی، مصرف انرژی، عملکرد عملیاتی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
LDAC (liquid desiccant air-conditioning system) is promising for reducing the energy consumption, and improving the indoor air quality. In this paper, the operation performance of LDAC with internally cooled/heated dehumidifier/regenerator was simulated and optimized. The cooling tower and solar collectors were employed as the cooling/heating source. Four nested iteration loops were developed and solved for system modeling. A typical commercial building in Hong Kong was selected as a case study, which air-conditioning load was obtained by Energy-plus. Results show that with the increase of solar collector area, the electricity consumption of AC (air-conditioning systems) system reduced by 11-35% in original system, but only a part of dehumidification demand was handled with liquid desiccant ventilation, which led to a low chiller COP (coefficient of performance). By adding a cooling coil for the solution entering dehumidifier, the electricity saving effectively increased to 22-47%, while the heat demand for regeneration also increased by 17%. So, a heat exchanger between water leaving regenerator and solution leaving dehumidifier was introduced. With the lower thermal requirement (reduced by 20%) and higher solar fraction (increased from 30 to 40%), the saving further increased to 29-49%, and the required collector area obviously reduced by 50-60% for the similar energy saving purpose.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 73, 14 August 2014, Pages 801-808
Journal: Energy - Volume 73, 14 August 2014, Pages 801-808
نویسندگان
Ronghui Qi, Lin Lu,