竖直U形地埋管流速与换热强度实验研究  

Experimental research on flow rate and heat transfer intensity of U-type vertical buried pipe

作　　者：黄倞[1] 刘秋新[1] 席洋[1] 包阔[1] 

机构地区：[1]武汉科技大学

出　　处：《暖通空调》2014年第5期106-109,91,共5页Heating Ventilating & Air Conditioning

摘　　要：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～O．9m／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。Drills the test wells on two project sites, pipe, selects different flow rates in pipes, and measures simulated winter and summer conditions. Calculates heat with a common form of U-type vertical buried inlet and outlet water temperatures under the 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.

关 键 词：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 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]