Exhaust ventilation through a wind tower as response to high hermeticity in welfare housing

In Mexico 76% of the population is concentrated in urban areas, the index is over 4.16 people per housing, where an appropriate indoor environment is impossible; however in warm sub-humid climate cross ventilation is one of the most efficient strategies to improve those conditions, but, the fast growth of social welfare housing (SWH), precludes their generation due to the high hermeticity of the architectural envelopes.