| 冻土层中水平埋管换热器换热特性的数值分析 |
| |
| 引用本文： | 魏亚志,张东海,王爱爱,程海涛,许亮亮.冻土层中水平埋管换热器换热特性的数值分析[J].建筑热能通风空调,2010,29(3):1-4,20. |
| |
| 作者姓名： | 魏亚志 张东海 王爱爱 程海涛 许亮亮 |
| |
| 作者单位： | 中国矿业大学建工学院 |
| |
| 摘 要： | 寒冷地区冻土层对地源热泵水平埋管换热器(GHE)的换热特性产生重要影响。根据冻土层换热特点建立了一种简化传热模型,对水平埋管周围土壤瞬态温度分布进行了模拟计算,分析了冻土层冻结和土壤含水率对GHE热损失的影响。计算结果表明,土壤冻结情况GHE的传热损失相对于非冻土情况下增大。进液管热损失随着土壤中含水量的增加先减小后增加,回液管热损失逐渐减小,GHE总热损失减小。计算结果与国家标准"地源热泵系统技术规"(GB 503662-2005)中对水平埋管的埋深规定相吻合。
|
| 关 键 词： | 地源热泵 水平埋管换热器 冻土层 数值分析 |
Numerical Simulation of Heat Transfer Characteristics of Horizontal Ground Heat Exchanger in Frozen Soil Layer |
| |
| WEI Ya-zhi,ZHANG Dong-hai,WANG Ai-ai,CHENG Hai-tao,XU Liang-liang.Numerical Simulation of Heat Transfer Characteristics of Horizontal Ground Heat Exchanger in Frozen Soil Layer[J].Building Energy & Environment,2010,29(3):1-4,20. |
| |
| Authors: | WEI Ya-zhi ZHANG Dong-hai WANG Ai-ai CHENG Hai-tao XU Liang-liang |
| |
| Affiliation: | WEI Ya-zhi,ZHANG Dong-hai,WANG Ai-ai,CHENG Hai-tao,XU Liang-liang School of Architecture & Civil Engineering,China University of Mining and Technology |
| |
| Abstract: | The effect of soil freezing on heat exchange characteristics of horizontal Ground Heat Exchanger(GHE) in cold zone is important.According to heat exchange characteristics of frozen soil layer,a simplified numerical model of heat transfer was presented and distribution of temperature field was simulated after 30 days,and the effect of soil freezing and the soil's moisture content on the heat transfer loss of GHE was analyzed.Numerical results show,not considering phase change,the heat transfer loss of GHE is... |
| |
| Keywords: | ground source heat pump horizontal ground heat exchanger frozen soil layer numerical simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
