Thread: Roof Ventilation questions and answers

Roof Ventilators - A Comparison Study of
Rotary/Turbine to Condor Kinetic

Rotary/Turbine Type
Commercially developed in the United States in early 1900s to remove welding fumes in factories during the winter months. This is a predominantly winter ventilator.

Mode of Operation
Wind Driven
Rotary/turbine ventilator uses wind energy as it's governing mode of operation.

Initial Conclusion
Rotary/turbine can best be referred as a Winter/Wind ventilatoras it's efficiency is governed by wind speed which is predominant in the Autumn, Winter and Spring months, particularly at the change of seasons.
Highest efficiency according to wind velocity.
Rotary type will move a fixed volume of air (irrespective of temperature or season) dictated by wind velocity.

Where no free air (replacement volume) is available
Rotary/turbine type is dictated by availability of a replacement volume (free air).
Rotary/turbine type cannot displace what cannot be replaced.

Performance during cooler months
Rotary/turbine unit is suited to this period, however is deemed detrimental in residential applications as dry warmer air in roof is removed and replaced with ambient which has greater moisture levels.

Performance during warmer months
Rotary/ turbine type is not suited to this period. When no wind movement is available, the only way hot air can escape is by having to overcome the resistance created by the turbine rotor. It is therefore less efficient than a simple open unobstructed hole in the roof.
Multiple units are often required.

Re - Maintenance
Rotary/turbine type will require periodical maintenance and is inclined to be noisy.

Summary
There are no similarities between the two types as can be clearly observed.
The principles governing the mode of operation between the two products are almost total opposites.
Their selection as to purpose and use is dependent entirely on the task they are expected to perform.

Condor Kinetic Type
Initial product patent in Australia in late 1980s for removal of heat from buildings. This is a heat and pressure driven roof ventilator designed for summer conditions.

Mode of Operation
Heat & Pressure
Motionless Condor Kinetic type is designed to use air pressure and heat load as it's governingmode of operation with wind assistance.

Initial Conclusion
Motionless Condor type can best be referred as a Summer/heat ventilator as it's efficiency is governed by heat pressure and internal thermal values along with external pressures.
Highest efficiency during Summer months according to temperature.
Motionless Condor Kinetic type will move a high volume during the Summer and low volume during Winter.
The Condor type is unsurpassed in zero wind velocity

Where no free air (replacement volume) is available
Condor Kinetic type is able to offer air volume exchange as dictated by pressure fluctuations both internal and external of the building. Put simply the Condor type allows the building to breathe in and out.

Performance during cooler months
Condor Kinetic mode of operation is not totally suited to this period. It is however, ideal in residential / institutional situations to ensure the dry air is not removed from roof cavity and replaced with external moist ambient.

Performance during warmer months
Condor Kinetic type was designed for and is well suited to this period. Distinct advantage in that only one correctly sized Condor is required for a conventional residential roof, either tile or steel.

Only one correctly sized unit is recommended for residential dwellings.

Re - Maintenance
Condor Kinetic type requires no maintenance and isnoise free.

Fire Risk Areas

Research Study conducted by Industrial Design Company Man Made Pty Ltd.

Condor Vent



CPAC Monier PIPE VENT TILE SET and
CPAC Monier PIPE VENT ROUND RIDGE SET

Prevent leakage, require no alteration to the roof.
Outstanding Features

CPAC Monier PIPE VENT TILE SETS and CPAC Monier PIPE VENT ROUND RIDGE SETS support the installation of various types of equipment on CPAC Monier roofs, such as TV antenna, ventilation pipes, pipes for solar-powered water heaters, lightning rods, and other round conduits that require access to the roof without piercing or damaging it. These CPAC Monier accessories enhance the attractiveness of any roof, increase convenience and ease of use, and effectively prevent leakage.






Characteristics

• 
  One CPAC Monier PIPE VENT TILE SET consists of one CPAC Monier PIPE VENT TILE and one CPAC Monier ELASTOMER SLEEVE. A full range of CPAC Monier standard colours and profiles is available.
• One CPAC Monier PIPE VENT ROUND RIDGE SET consists of one CPAC Monier PIPE VENT ROUND RIDGE and one CPAC Monier ELASTOMER SLEEVE. A full range of CPAC Monier standard colours and profiles is available.

C PAC Monier