| 摘要: |
| 地源热泵系统全年动态性能模拟对系统方案设计具有重要意义。基于一维非稳态传热数值模型，给出了U形地埋管地源热泵耦合模拟算法。根据建筑逐时负荷、地质情况以及热泵机组性能等条件，耦合模拟方法能够给出长期地温、水温以及系统能耗信息，为方案评估提供依据。与基于解析模型的模拟算法进行了交叉比较，表明数值模型计算准确，计算速度快，具有工程实用性。对某案例进行全年逐时分析，根据模拟结果对钻孔数目及钻孔间距的选择提出相应的建议。 |
| 关键词: 地源热泵 动态性能 数值模拟 |
| DOI： |
| 投稿时间：2012-05-13
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| 基金项目: |
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| Numerical Simulations of Dynamic Performances of the U-tube Ground Source Heat Pumps System |
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Ji Feng, Su Hua, Liu Sainan, Liao Gaohui
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| (School of Energy and Environment, Xihua University) |
| Abstract: |
| Simulations of the dynamic performance of a ground heat pump system are important to the system design. Based on a one-dimensional numerical transient heat transfer model, a coupling simulation algorithm was developed for the U-tube ground source heat pump system. Given hourly building loads, ground properties and heat pump performance data, this method can compute the ground temperature, the water temperature and energy consumptions, which are the basis of system assessment. Comparisons between this numerical method and an analytical method show that this numerical method is accurate and fast. A one-year-period case study is hourly carried out and recommendations are given regarding to quantity and distance of boreholes based on simulated results. |
| Key words: ground source heat pump system dynamic performance numerical simulation |
