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For a pipe-embedded concrete radiant floor, its thermal performance is essential to maintain the desired cooling/heating capacity and indoor thermal comfort. A good temperature distribution of the floor surface is very important in order to prevent occupant discomfort and avoid possible condensation in the case of floor cooling. In this study, a heat transfer model of a three-layer floor was developed by coupling 2-D and 1-D heat transfer problems. The analytical solution was developed and validated. The results of the calculations are in a good agreement with the experiments. The absolute error between the calculated and the measured floor surface temperatures was within 0.4℃. The maximum relative error was within 2.2%. The proposed method can be utilized to calculate the thermal performance of a floor, either a one-layer floor, a two-layer floor or a three-layer floor. The thermal resistance of the floor with different structures can be calculated and used to estimate thermal performance of the floor. For the typical radiant floor, the range of thermal resistance is approximately 0.15-0.45 m²K/W with a pipe spacing from 0.1 to 0.5 m. With the overall floor temperature obtained, it is possible to identify the percentage of the floor area with a temperature higher than the limit and to estimate the overall and local occupant comfort. Based on the thermal resistance of the floor, an ε-NTU method will be developed in the future study for design of a radiant floor.

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对于嵌入管道的混凝土辐射地板，其热性能对于维持所需的制冷/制热能力和室内热舒适性至关重要。为了防止乘员不适并在地板冷却时避免可能的冷凝，地板表面的良好温度分布非常重要。在这项研究中，通过耦合二维和一维传热问题，建立了一个三层地板的传热模型。分析解决方案已开发并验证。计算结果与实验吻合良好。计算和测得的地板表面温度之间的绝对误差在0.4℃以内。最大相对误差在2.2％以内。所提出的方法可用于计算地板（单层地板，两层或三层。可以计算出具有不同结构的地板的热阻，并将其用于估算地板的热性能。对于典型的辐射地板，热阻范围约为0.15-0.45 m² K / W，管距从0.1到0.5 m。根据获得的总体地板温度，可以确定温度高于极限值的地板面积的百分比，并估算总体和局部乘员的舒适度。基于地板的热阻，未来的研究中将开发一种ε-NTU方法来设计辐射地板。