Natural Ventilation and Human Comfort (Chapter 3)

As "hot" is only a feeling depending on different person, this video introduces how to adjust the thermal environment with staying fresh and healthy. It is Chapter 3 in the series, Living with the Sun: Encounter Science with Everyday Life.
1-Different feeling with indoor and outdoor air
2- Hot feeling and air humidity
3- Human body thermal comfort zone
4- Human body sweat to release heat
5- Hot feeling and airflow speed
6- Ventilation and keep healthy
7-Effective natural ventilation