How To Properly Ventilate Your Passive Solar Greenhouse

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To Follow Along With The Article In The Video:

Most greenhouses are underventilated. In this video I talk about why it is important and how to achieve it. I’ve come to believe that there is no upper limit to ventilation in a greenhouse. I recommend that people install a ventilation area equivalent to at least 30% of their glazing. However, this will only keep things cool and manageable in the shoulder months. To get enough air through the greenhouse, it’s important to have other ways of seasonally increasing ventilation to keep temperatures below 26˚C. We have a blowout door that can be removed seasonally . The other reason for excess ventilation is to allow the plants to get “exercise” – it’s important to let them blow around in the wind.

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[estebancorral]

Put a malqaf, known in English as a windcatcher tower. It was described in the PDM. For further study one may read Architecture for the Poor, or Natural Energy and Vernacular Architecture both by Hassan Fathy. The malgaf should not be confused with a solar thermal siphon tower.