Condor Kinetic roof ventilators and roof ventilation systems 07 3272 3737    

architectural notes



Overhead Sweep Fans

The high displacement slow speed fans are used quite extensively in the tropics where the humidity is high and moisture quite plentiful particularly on the surface of the skin.

The gentle movement of any breeze would cool the capillaries if the skin and make conditions more bearable during the wet season in particular.

The original sweep fans employed in the tropics were placed someway down from the high ceiling and avoided drawing the warm air uppermost to the region below.
Today's' overhead fans are some thing quite different in that their location is quite close to the ceiling, drawing the warmer volume into play and their displacement capacity being quite low at slow speed has a detrimental effect on an individuals skin when exposed for prolonged periods of time at the higher speeds

Initially the capillaries secrete token moisture imparting a cooling effect however when the skin is no longer able to surrender any more moisture the skin becomes dry and dehydrates.
This is evident particularly if left on when sleeping, children are thirsty midway through their sleep cycle and women complain of dry skin on their faces and arms.

The overhead sweep fans need to be used prudently as they do not improve the quality of the air as does ventilation.

Very often ventilation is perceived as air movement whereas it is in fact air replacement through movement

Their use as an alternative to ventilation is based on poor assessment and again an attempt to use one medium as a replacement for another.
The reverse motion used to reintegrate warm air with cooler during the winter months has the same effect except the dehydration occurs at a faster rate.

The circulatory function is suited more to outdoor use rather than indoor as natural currents that arise from moment to moment assist in the ventilation through displacement.

The preferred momentum of air movement in the tropics is from side to side and not top to bottom which is why oscillating fans located to one side of a room are far more beneficial, although the dehydration factor is still present


keeping cool

Wikipedia /Cupola

The Cupola

Air Conditioning Summer Cooling
Architect or Building Designer
BAL Fire Risk Roof Ventilation
Bathroom Ventilation against mould
Buying a Roof Ventilator
Buying Roof Ventilation
Conjecture & Supposition
Cooler Home with natural roof ventilation
Does Roof Ventilation Work?
Ductless Range Hood
Evaporative Air Conditioning
Flue system for combustion stove
Ignorance sells ventilation best
Mould Spores in your home
Overhead Sweep Fans
Ridge Vent
Roof Services Industry
re roof ventilation
Roof Ventilation Fans pt1
Roof Ventilation Fans pt2
Roof Ventilator Choices
Roof Ventilator Comparison
Roof Ventilators Explained
Solar Powered Ventilation
marketing deception
Solar Roof Ventilation
Steel v Tile Roof
Sub Floor Ventilation
The Evening Purge Cycle explained
The Ventilation Flim Flam man
The Ventilation Specialist
To ventilate and sleep well
Ventilating a cathedral ceiling
Ventilating a raked ceiling
Ventilating Bedrooms
Ventilating your home with Ceiling & Wall Vents
Ventilation Concepts
Ventilation of a Skillion Roof
Ventilation of Indoor Pools and Spas
Ventilation v Insulation
Venting a Smoking Fireplace
Venting the top floor
Venting under a skillion roof

  Information      Products Concepts   Media    Contact   

Ventilation Blog
Does Roof Ventilation Work

pdf files

raked ceiling vent
residential vent


Commercial /Industrial
Pool & Spa
Ceiling Vents
Raked Ceilings
Skillion Roof
Fire Flue Systems

infographic to sustainable dwelling facebook twitter google linkedin Instagram

07 3272 3737