流体机械

2017, v.45;No.539(05) 62-66

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四种桩基埋管换热器的数值模拟研究
Numerical Simulation Research of Energy Piles of Four Forms

江然然;龚红卫;管超;仇进明;
JIANG Ran-ran;GONG Hong-wei;GUAN Chao;QIU Jin-ming;Nanjing Tech University;Green Building Research Center;Nanjing Tech Construction Engineering Technology Company;

摘要(Abstract):

运用数值模拟软件建立4种(单U型、串联双U型、并联双U型、并联双螺旋型)桩基埋管换热器的三维模型,分析不同流速条件下各埋管形式的进出口温差、单位桩长埋管换热量、进出口压降、土壤温度和桩身温度的变化规律,得出4种桩基埋管换热器在不同流速条件下的换热性能和进出口压降的变化情况,为桩基埋管的推广和应用提供一定的参考。
By means of numerical simulation for four forms(single U,double U,U type parallel double U,the double helix)of buried pipe pile foundation. It analysis that the change rules of buried pipes of each form include that the water temperature difference between import and export,the average temperature of surrounding soil,the average temperature of pile and the pressure drop between export and import under different flow rate by using numerical simulation. It is concluded that heat transfer performance of energy piles of each form,the pressure drop between import and export. The results will give some reference for applications and popularize of energy piles.

关键词(KeyWords): 桩基埋管;换热压降比;进出口压降;换热量
energy piles;the ratio between the heat capacity and pressure drop;the pressure drop of import and export;the heat capacity

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基金项目(Foundation): 江苏省建设系统科技示范工程项目(2013SF1)

作者(Author): 江然然;龚红卫;管超;仇进明;
JIANG Ran-ran;GONG Hong-wei;GUAN Chao;QIU Jin-ming;Nanjing Tech University;Green Building Research Center;Nanjing Tech Construction Engineering Technology Company;

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