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提出联合海水淡化的太阳能烟囱发电综合系统的设计方案,给出描述综合系统非稳态传热问题的数学物理模型,搭建综合系统试验装置,并在实际天气条件下进行测试。结果表明:计算结果和试验结果吻合较好;海水厚度对综合系统运行特性有重要影响,单从获取淡水产量来说,在保证足够的水量以供蒸发又不至于在水面上形成反射盐层的前提下,水层应是越浅越好;单从可得到的理论发电功率来说,水层越浅越好;单从是否有利调整系统昼夜电力输出峰谷差,改善系统连续稳定运行来说,水层越厚越好。系统运行平稳时,海水厚度对太阳能日利用率的影响不大。
The design scheme of integrated system for solar chimney power generation combined desalination is proposed. The mathematical physics model describing the heat transfer problem of the unsteady state of the integrated system is given. The test system of the integrated system is set up and tested under the actual weather conditions. The results show that the calculated results are in good agreement with the experimental results. The thickness of seawater has an important influence on the operating characteristics of the integrated system. For fresh water production alone, enough water is allowed to evaporate without forming reflective salts on the water surface Under the premise, the water layer should be as shallow as possible; single available from the theoretical power generation, the water layer shallower the better; alone from whether the favorable adjustment of day and night power output peak-valley difference, to improve continuous and stable operation of the system, the water Thicker the better. When the system is running smoothly, the thickness of seawater has little effect on solar daily utilization.