کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6732847 | 504045 | 2015 | 64 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The impact of exterior surface convective heat transfer coefficients on the building energy consumption in urban neighborhoods with different plan area densities
ترجمه فارسی عنوان
تأثیر ضریب انتقال حرارت کنونی در سطح بیرونی بر مصرف انرژی ساختمان در محله های شهری با تراکم های مختلف منطقه طرح
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کلمات کلیدی
Bclpressure staggering optionEPWptacCHTCCFLSSTBESASHRAELESEnergyPlusACh - آهBESTest - بهترینHeating ventilation and air conditioning - تهویه تهویه و تهویه مطبوعHVAC - تهویه مطبوعShear Stress Transport - حمل و نقل استرس برشیCFD - دینامیک سیالاتComputational fluid dynamics - دینامیک سیالات محاسباتیRANS - رانReynolds averaged Navier–Stokes - رینولدز به طور متوسط ناویر استوکسbuilding energy simulation - شبیه سازی انرژی ساختمانLarge Eddy Simulation - شبیه سازی بزرگ EddyConvective heat transfer coefficient - ضریب انتقال گرما همگراPISO - طبقهBuilding energy consumption - مصرف انرژی ساختمانUncertainty quantification - کمی سازی عدم قطعیت
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
In the urban micro-climate environment, the exterior surfaces' convective heat transfer coefficients (CHTCs) influence simulated building's energy consumption and exterior surface temperatures. This study first investigated the CHTCs at the external windward, leeward, and roof surfaces of a building located in an urban neighborhood with different plan area densities. New CHTC correlations were defined using the plan area density (λp), local velocity (Uloc), and temperature difference (ÎT), and then evaluated in the EnergyPlus simulation program. These new correlations and other commonly used correlations were employed to quantify the impact of CHTCs on the simulation results. The results show that the total cooling energy consumption increased by 4%, and the total heating energy consumption decreased by 1.3% when the plan area density increased from λp = 0.04 (almost isolated building) to λp = 0.44 (denser cities) due to the convective heat transfer from exterior building surfaces. With variable exterior surface CHTCs, the exterior surface temperature comparisons resulted in maximum temperature differences of 9.1 K and 3.6 K for the exterior south and north walls, respectively. Overall, this study quantified the impact of exterior surface CHTC correlations on the simulations results that directly impact the urban micro-climate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 86, January 2015, Pages 449-463
Journal: Energy and Buildings - Volume 86, January 2015, Pages 449-463
نویسندگان
Jiying Liu, Mohammad Heidarinejad, Stefan Gracik, Jelena Srebric,