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摘 要 ：基于地面湿式毛细管辐射末端施工方式的特点，通过实验手段对该方式下三种不同厚度水泥砂浆毛细管试块进行换热实验，并从实验中得到20mm厚毛细管末端试块散热量公式。结果表明，地面湿式毛细管末端冬季换热性能良好，与传统地板辐射供暖方式相比供水温度更低；同时在一定供水温度下，不同厚度水泥砂浆试块表面温度随厚度的增加而降低，在实际应用时应综合考虑地板散热量与人的热舒适性要求。 关键词 ：毛细管末端 换热性能 湿式施工 实验研究 Heat Transfer Performance Of Wet Structure Floor Capillary Tube In Winter Zhou Huixin Yang Jie Zhang Xu Institute of HVACnbsp; Abstract: According to the construction characteristics of wet structure floor capillary tube, a winter experiment designed to investigate the heat transfer performance of capillary tube blocks in three different thicknesses is described, and it also obtains the formula for heat dissipation of 20mm thickness capillary tube block. As a result, the capillary tube blocks of wet structure have excellent heat transfer performance and lower supply water temperature, compared with the traditional radiant heating pipes. When the temperature of supply water is constant, the block surface temperature has the opposite trend as the thickness increases, and it is suggested that both of the heat dissipation and comfort should be comprehensively considered in practical applications. Keywords : capillary tube; heat transfer performance; wet structure construction; experimental study