An experiment is described to evaluate natural ventilation in a ten-story office building in Mexico City. The airflow results from the flotation of the internal hot air when the outside environment is colder. The objective of this work is to establish basic design considerations for effective ventilation of similar buildings. The experience is based on temperature measurements. These were taken at different levels in the building during several years and appear to be mutually consistent. A simple lumped-parameter mathematical model, which simulates the variation of temperature over time, fits well with the observed data. Some selected samples illustrate specific characteristics of the ventilation phenomenon. Thus, natural ventilation in other buildings can be designed to promote ventilation and improve comfort if there are some temperature measurements available for the calibration of the proposed model. The study validates the use of natural ventilation to provide passive thermal comfort throughout the year in Mexico City, although on some days slightly uncomfortable temperatures occur.

描述了一项评估墨西哥城十层办公楼自然通风的实验。当外部环境较冷时，气流是由内部热空气的漂浮产生的。这项工作的目的是为类似建筑物的有效通风建立基本的设计考虑。经验是基于温度测量。这些是几年来在建筑物的不同层级拍摄的，并且似乎相互一致。一个简单的集总参数数学模型模拟了温度随时间的变化，与观测数据非常吻合。一些选定的样本说明了通风现象的具体特征。因此，如果有一些温度测量值可用于校准提议的模型，则可以设计其他建筑物的自然通风以促进通风和提高舒适度。该研究验证了在墨西哥城全年使用自然通风提供被动热舒适，尽管在某些日子里会出现稍微不舒服的温度。