期刊文献+

蒸发冷却式模块通风外墙在机械通风状态下的热工性能 被引量:4

Thermal Performance Study on Modular Evaporative Cooling Sandwich Wall on Mechanical Ventilation Condition
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摘要 目的为进一步提高墙体的夏季隔热性能,研究蒸发冷却通风外墙在机械通风状态下的热工性能,确定最佳的墙体结构和通风方式.方法通过对墙体内空气与水两种流体域的流动传热状况分析,建立了合适的数理模型.借助Fluent软件,研究机械通风状态下该模块墙体的热工性能.结果水层位于外侧的复合墙体结构不适合机械送风,其节能潜力有限;而水层位于复合墙体内侧的方案,其隔热性能明显优于水层位于复合墙体外侧的方案,水层厚度在1cm左右,空气层厚度在2 cm左右既可取得良好的隔热效果,又能节约建筑空间.结论利用水的蒸发冷却对外墙内表面进行降温的复合通风外墙结构具有很好的隔热效果,与目前常规的建筑墙体相比,表现出了巨大的性能优势. To improve the wall insulation in summer,the thermal performance of a new modular evaporative cooling ventilated wall was studied on mechanical ventilation condition.Analyzing the flow and heat transfer conditions in air domain and water domain in the wall,appropriate mathematical model was found.Through CFD analyzing with Fluent,the law,which the main factors influence the heat-insulating performance of the wall,was found and the optimum structural parameters were obtained.It shows that the structure with ...
出处 《沈阳建筑大学学报(自然科学版)》 CAS 北大核心 2011年第2期312-318,共7页 Journal of Shenyang Jianzhu University:Natural Science
基金 国家科技支撑计划项目(2006BAJ01B03-03)
关键词 通风外墙 蒸发冷却 建筑节能 机械通风 热工性能 sandwich wall evaporative cooling mechanical ventilation building energy efficiency thermal performance
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