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以梯形盐水太阳池为研究对象,搭建表面积2.4 m×2.4 m,底面积1.0 m×1.0 m的小型梯形盐水太阳池,基于实验数据对梯形盐水太阳池进行一维数值模拟,建立热盐双扩散离散模型,改进池底反射模型、辐射透射模型和包括表面热损、壁面热损和土壤层热损在内的详细热损失模型,通过模拟与实验结果的对比验证模型的有效性。结果表明:太阳池梯形结构可增强太阳辐射利用率,减少下对流层散热量,提高太阳池储热能力,从而提升太阳池的供热温度。
Taking a trapezoidal saltwater solar pool as the research object, a small trapezoidal saltwater solar pool with a surface area of 2.4 m × 2.4 m and a bottom area of 1.0 m × 1.0 m was constructed. Based on the experimental data, a one-dimensional numerical simulation of the trapezoidal saltwater solar pool was carried out to establish a double salt diffusion Discrete model, improved bottom reflection model, radiation transmission model and detailed heat loss model including surface heat loss, wall heat loss and soil layer heat loss. The comparison between simulation and experimental results verify the effectiveness of the model. The results show that the solar pool trapezoidal structure can enhance the utilization of solar radiation, reduce the heat dissipation in the troposphere, increase the thermal storage capacity of the solar pool, and enhance the heating temperature of the solar pool.