论文部分内容阅读
受限空间下冷却塔容易产生回流和飘水,回流和飘水对冷却塔的影响尚待进一步探索。以机械通风横流冷却塔为研究对象,在充分考虑回流的基础上,建立了热力学模型并进行了测实验证。分析了飘水对模拟计算精度影响和不同条件下回流对冷却塔的影响。结果表明,不考虑飘水造成进风温度的相对误差最大达到14.4%,而相对湿度更是达到26%;回流影响冷却塔的冷却能力,且回流率越高,对冷却能力影响越大。当回流率增加到50%,换热量减少40.68%。
Restricted space under the cooling tower is prone to backflow and flooding, the return flow and flooding on the cooling tower remains to be further explored. Taking the mechanical draft cross flow cooling tower as the research object, the thermodynamic model was established and the measured results were verified by fully considering the backflow. The effect of flowing water on simulation accuracy and the effect of reflux on the cooling tower under different conditions were analyzed. The results show that the relative error of inlet air temperature without considering floating water reaches 14.4% at the maximum and the relative humidity reaches 26%. The backflow affects the cooling capacity of the cooling tower, and the higher the reflux rate, the greater the impact on the cooling capacity. When the reflux rate increased to 50%, heat transfer decreased by 40.68%.