Whirlybirds vs Solar-powered Roof Ventilators Part 1

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Whirlybirds or wind driven fans have been established for ever, but there has been lots of discussion about solar-powered roof ventilators.

Essentially, the main objective at the moment is about the level of air moved through the different roof ventilation fan types available. Solar whirlybird

The common domestic whirlybird moves around 100 cbm/h - around 12 km/h wind speeds. It really is difficult to find this sort of data from your manufacturers of the wind driven fans - but there will be considered a consensus when surveying different solar powered roof ventilation fan options that they - based on their airflow capacity at 0 pressure capacity corresponds to that of 10 to 30 whirly birds.

This can be in keeping with data published some time back after a conference at the Queensland University of technology by Shane West, from University of Technology, Sydney. Roof vents

The sole wind driven fans with capacities much like solar roof ventilation fans, are Industrial whirlybirds, which come in a variety of sizes and capacities - but once again - it is hard to find data.

Australia wide - the most well-known Industrial type will be the Edmonds branded 900 mm Edmonds Hurricane (No Whirlybirds)Hurricane having a capacity of 2700 cbm/h at 12 km/h wind speed and 3400 cbm/h at 16 km/h. The problem is needless to say which they rely on the wind - and it will or is probably not windy on the hot days when roof ventilation is needed one of the most.

At this time - it is most unusual to see what exactly is normally viewed as industrial whirlybirds utilized on homes - and also offices, daycare institutions, retirement villages etc. - you actually only see these huge units useful for industrial ventilation of warehouses and ventilation of factories.

However, if you are searching for wind driven roof ventilation matching the solar ventilation alternatives - you should go through the large industrial whirly bird varieties which aren�t generally bought at places like Bunnings and Masters and installation Melbourne.