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建立了闭式热源塔冬季工况的数学模型,利用MATLAB自编程序,对上海冬季工况下闭式热源塔的吸热能力进行了模拟。研究表明:在冬季工况下,上海地区闭式热源塔的换热能力主要受湿球温度的影响,在11月的吸热能力最优,1月的吸热能力最差,相差26%,3月的吸热能力波动最大。当相对湿度低于50%时,闭式热源塔以干工况运行,理论防霜区时间占整个供暖期的67%,因此,研究降低闭式热源塔的防霜能耗具有重要意义。
The mathematic model of the closed heat source tower in winter is established. The self-programming program of MATLAB is used to simulate the heat absorption capacity of closed heat source tower in Shanghai in winter. The results show that under winter conditions, the heat exchange capacity of the closed-type heat source tower in Shanghai is mainly affected by the wet-bulb temperature, which is the best in November and the worst in January, with a difference of 26% March heat absorption capacity fluctuations. When the relative humidity is less than 50%, the closed-type heat source tower operates in dry condition and the theoretical frost-protection zone time accounts for 67% of the total heating period. Therefore, it is of great significance to study and reduce the frost-proof energy consumption of the closed heat source tower.