复杂通风方案设计计算方法研究

方案阶段的自然通风设计主要关注的是通风路径,而一般来说此阶段的部分开口信息未知.本文针对建筑设计的特点,提出了面向方案阶段复杂通风方案的设计计算方法,针对部分开口信息未知的情况,基于稳态热平衡模型和多区域通风网络模型建立了最优化计算模型,并以“未知开口平均面积的最小值”作为通风方案评估指标.将该设计计算方法用于比较单中庭和双中庭通风方案,发现单中庭方案部分楼层出现了气流“倒灌”现象,而双中庭方案可节省37.1％的开口面积.

Research on Design and Calculation Method for Complicated Natural Ventilation Scheme

The determination of ventilation path is the main task during the natural ventilation scheme design period,while some openings’ area is unknown at this stage.In this paper,according to the characteristics of design process,the design and calculation method for complicated natural ventilation scheme was put forward.Based on the steady thermal model and multi-zone model,the optimization model for natural ventilation was proposed.In this model,the minimum value of average opening area was used to evaluate the effect of different natural ventilation schemes.In the case study of evaluating the single-and double-atrium schemes,the reverse air flow was found in the single-atrium scheme,while the double-atrium scheme could save the opening area by 37.1%.