何锁盈,王 蕊,张治愚,闫明暄,刘严雪,高 明
AuthorsHTML:何锁盈，王 蕊，张治愚，闫明暄，刘严雪，高 明
AuthorsListE:He Suoying,Wang Rui,Zhang Zhiyu,Yan Mingxuan,Liu Yanxue,Gao Ming
AuthorsHTMLE:He Suoying，Wang Rui，Zhang Zhiyu，Yan Mingxuan，Liu Yanxue，Gao Ming
Unit:山东大学能源与动力工程学院，济南 250061
Unit_EngLish:School of Energy and Power Engineering，Shandong University，Jinan 250061，China
Abstract_Chinese:建立了太阳能增效空冷塔的三维数值模型，通过数值模拟探究了将太阳能增效空冷塔内蓄热层表面形状由 平面形改为矩形和波纹形的可行性，对比研究了 3 种不同形状地面蓄热层对太阳能增效空冷塔换热性能的影响规 律，并获得了太阳能增效空冷塔地面蓄热层形状的优化方案．研究发现：①对于 140 m 高的太阳能增效空冷塔，在 进塔水温 333.15 K(60 ℃)、环境温度 303.15 K(30 ℃)、1 000 W/m2 辐射强度下，蓄热层表面为平面形、波纹形、矩形 时，冷却塔的排热量分别为 132.9 MW、145.3 MW 和 149.2 MW，即矩形蓄热层对太阳能增效空冷塔性能的改善效果 优于波纹形；②结论 1 同样适用于进塔水温为 50 ℃、55 ℃的情况；③综合考虑建造成本及实际施工难度，工程实 际应用时建议优先选用矩形的蓄热层形状，以更好地利用太阳能提升空冷塔的换热性能．此研究可用于太阳能增效 空冷塔的优化设计领域，为太阳能增效空冷塔的实际应用奠定理论基础．
Abstract_English:In this study，we established a three dimensional(3D)model of a solar-enhanced natural-draft dry cooling tower(SENDDCT)to investigate the feasibility of changing the surface shape of the thermal storage layer from flat to rectangular or corrugated. We compare and analyze the heat exchange performances of SENDDCTs with the three different heat storage layers，and provide the optimization measures. The results are as follows：①According to the simulation，when the inlet water temperature is 60 ℃，the enhancement of the corrugated rib and rectangular rib SENDDCTs can increase by 9.3% and 12.3%，respectively，and the heat rejection rate of 132.9 MW obtained by the flat SENDDCT increases respectively to 145.3 MW and 149.2 MW. These results prove that the cooling performance of the SENDDCT can be improved by intensifying the inlet air turbulence；②The performance enhancement of the SENDDCT with a rectangular rib was also found to be better than that using corrugated rib at inlet water temperatures of 50 ℃ and 55 ℃；③Considering the overall construction cost and actual difficulty of construction，in practical applications，the design of a rectangular heat storage layer of the SENDDCT should be given priority，followed by corrugated and flat，to improve the heat exchange performance and obtain better economic benefits. The results of this research can be used to optimize the design of SENDDCT and lay a foundation for the practical application ofsolar-efficient air-cooling towers.
Keyword_Chinese:太阳能增效空冷塔；空气扰流；矩形；波纹形
Keywords_English:solar-enhanced natural-draft dry cooling tower；air turbulence；rectangular；corrugated

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