暖通空调
暖通空調
난통공조
HEATING,VENTILATING & AIR CONDITIONING
2014年
5期
106-109,91
,共5页
包阔%席洋%刘秋新%黄絫
包闊%席洋%劉鞦新%黃絫
포활%석양%류추신%황류
竖直U形地埋管%管内流速%换热强度%实验测试%单位井深换热量
豎直U形地埋管%管內流速%換熱彊度%實驗測試%單位井深換熱量
수직U형지매관%관내류속%환열강도%실험측시%단위정심환열량
U-type vertical buried pipe%flow rate in pipe%heat transfer intensity%experimental test%heat exchange per unit well depth
在2个实际工程现场钻取测试井,采用常见的竖直 U 形地埋管形式,设定不同的管内流速,测得模拟冬、夏季工况下的进出口水温,计算出单位井深换热量,分析了管内流速对地埋管换热强度的影响。结果表明,在0.6~0.9 m/s 的流速范围内,地埋管换热强度随流速的增大而增大,超出这一范围,增大流速会导致换热强度降低。
在2箇實際工程現場鑽取測試井,採用常見的豎直 U 形地埋管形式,設定不同的管內流速,測得模擬鼕、夏季工況下的進齣口水溫,計算齣單位井深換熱量,分析瞭管內流速對地埋管換熱彊度的影響。結果錶明,在0.6~0.9 m/s 的流速範圍內,地埋管換熱彊度隨流速的增大而增大,超齣這一範圍,增大流速會導緻換熱彊度降低。
재2개실제공정현장찬취측시정,채용상견적수직 U 형지매관형식,설정불동적관내류속,측득모의동、하계공황하적진출구수온,계산출단위정심환열량,분석료관내류속대지매관환열강도적영향。결과표명,재0.6~0.9 m/s 적류속범위내,지매관환열강도수류속적증대이증대,초출저일범위,증대류속회도치환열강도강저。
Drills the test wells on two project sites,with a common form of U-type vertical buried pipe,selects different flow rates in pipes,and measures inlet and outlet water temperatures under the simulated winter and summer conditions.Calculates heat exchange per unit well depth,and studies and analyses the influence of flow rate on the heat transfer intensity of pipes.The results show that within the range of 0.6 to 0.9 m/s,the higher the flow rate is,the higher the heat transfer intensity is.Beyond this range,the increase of flow rate may result in a reduction of the heat transfer intensity.