کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6729201 | 1428931 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An integrated predictive model of the long-term performance of ground source heat pump (GSHP) systems
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
This study presents an integrated predictive model for the long-term performance assessment of ground source heat pump (GSHP) systems, which comprehensively considers the dynamic heat loads of the buildings and heat pump units (HPUs), the 3D dynamic heat transfer process in the ground heat exchangers (GHEs) and the energy consumption by the system accessories particularly the pumps. The model achieved significantly improved predictions than the conventional models and was in satisfactory agreement with the field-test data of an in-operation GSHP system, demonstrating the importance of systematic consideration of the dynamic system operational characteristics and 3D heat transfer processes in the GHEs. The model was also utilized to analyse the performance degradation of GSHP system induced by the soil thermal imbalance. It was found that increasing the thermal imbalance ratio of the accumulative building load from 35% to 76% led to a 10.7 °C further increase in GHE outlet water temperature, a half-folded cooling COP of the HPU and a shorter life-span.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 159, 15 January 2018, Pages 309-318
Journal: Energy and Buildings - Volume 159, 15 January 2018, Pages 309-318
نویسندگان
Wenxin Li, Xiangdong Li, Yong Wang, Jiyuan Tu,