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Session Overview
Workshop 273: Ventilation rates in homes
Monday, 21/June/2021:
10:30am - 12:00pm

Session Chair: Yuexia Sun
Location: Zoom room #4
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Ventilation rates in homes

Yuexia Sun

Tianjin University, China, People's Republic of

Ventilation of homes is a major determinant of public health and energy use.

From studies in Sweden (Bornehag et al., 2005) it is shown that a reduced ventilation rate in homes is a major risk factor for allergies among children. In a study of students in Tianjin University it is shown that the lower the ventilation rate in dormitories, the more allergies and infectious diseases are reported by the students (Sun et al., 2011). In cold climate it is shown that the less ventilation, the more infestation of House Dust Mites (HdM) in beds (Sundell et al., 1995). HdM is a main trigger of allergic responses. A low ventilation rate also increases the indoor concentration of pollutants from indoor sources, like formaldehyde, VOCs and SVOCs. Some of such compounds are endocrine disruptors influencing our hormonal system, and now believed to be the cause of “Modern Diseases” like asthma, allergies, diabetes, obesity, reduced sperm quality, male reproductive disorders, and neurodevelopmental disorders like ADHD, and autism (Colborn et al., 1997).

On the other hand, with development of urbanization, energy consumption for heating and air cooling system has a trend of increase. Higher ventilation means higher consumption of energy (unless heat recovery systems are used).

In this session, we would like to get input and discussion from audience on (1) how much ventilation is needed in homes; (2) What technical solutions are used today; (3) What new solutions can be used in the near future.

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