Rooftop
KS VentFlow - Roof Ventilator
KS Ventflow : Roof Ventilation System that makes comfortable and cooling inside the building. Can be reduced temperature of the air inside up to 6.7 degree celsius. Remove overheated air from roof, increase circulation and ventilation. In case of design the vent on the roof can reduce the maximum temperature of the air inside the factory by 10 to 12 Degree Celsius.
There are 2 types - KS VentFlow600 and KS VentFlow700 can be used with all roof profiles. To be strength with Press Frame for better performance. Have walling sheet and a special flashing (rain protection flashing), not obstructing the wind and preventing rainwater from dripping into the building. Special mesh to protect the bird, mouse, squirrel into the building.
Features
- Provide continual airflow and help remove overheated air from roof
- Increase circulation and ventilation and help ventilate heat outside the building
- Make comfortable and cooling inside the building
- With a special flashing (rain protection flashing), not obstructing the wind and preventing rainwater from dripping into the building
- Due to strength of Press Frame for better performance
- Suitable for all roof profiles, can install with minimum roof slope up to 1 degree
- Lightweight, easy to install, custom length as required
- Highly corrosion-resistant and durable coated steel
Roof Ventilation System consists of:
- Press Frame, width 1180mm. height 1250mm. and thickness 1.50mm. (
- 
) - Venflow base (
, 
- 
) - Covered with the transparent sheet on the top (
- 
, 
) and wire mesh is available if needed - Walling sheet (
) and flashing to protect rust with Zincalume coated steel thickness 0.47mm. ( 
- 
, 
- 
)
Dimension
| B (mm) | H (mm) | A (mm) | Thickness, BMT (mm) | Length (mm) | |||
|---|---|---|---|---|---|---|---|
| H1 | H2* | tf frame | ts siding | tsf Flashing | |||
| 1,180 | 950 | 70 - 300 | 320 | 1.50 | 0.42 | 0.42 | custom length |
*H2 depends on the thickness of insulation, rib height of each roof sheet
Techniques for ventilation in factories or buildings
There are two types: Active Ventilation and Passive Ventilation
- Active Ventilation or Mechanical Ventilation systems use mechanical energy to ventilate air, such as fans and air conditioning systems.
- Passive Ventilation or Natural Ventilation systems use natural forces from wind for ventilation which can flow out through the opening from the inside to the outside. Relies on air circulation By natural wind (Natural Convective Circulation), which is “hot air will rise up high and cool air will flow in to replace it”, reducing the heat without using electrical energy. To make cool the building faster, that is, to improve the higher efficiency of ventilation
*Air change is the amount that needs air to be added to the area. to replace the air in that area of the factory or building This can be calculated from the Air change rate to calculate the amount of air circulation in the area. The obtained values can be compared with relevant standards or laws, such as according to ministerial regulations or EIT standards, etc.
In order to improve the efficiency of the passive ventilation system, KS Group has designed and improved roofing system that is the copyright of the company, named KS VentFlow. This system uses air vents like the KS VentFlow System rely on Natural Convective Circulation better than other general roof opening.
KS Group, we still improve the efficiency of the passive ventilation system, KS Group has designed and improved roofing system that is the copyright of the company for Roof Ventilation system, named “KS VentFlow” This system uses air vents like the KS VentFlow System rely on Natural Convective Circulation better than other general roof opening. This system certification by KMUTT confirm higher efficiency in circulation and ventilation inside the building and help ventilate heat outside the building :
- Can be reduced temperature of the air inside up to 6.7 degree celsius. Remove overheated air from roof, increase circulation and ventilation.
- KS VentFlow can be used with all roof profiles. To be strength with Press Frame for better performance. Have walling sheet and a special flashing (rain protection flashing), not obstructing the wind and preventing rainwater from dripping into the building. Special mesh to protect the bird, mouse, squirrel into the building.
Note: From the figure, the air velocity at the entrance to the factory is equal to 0.5 m/s when air flows into the factory with the KS VentFlow700 installed, opening size 700 millimeters, at installation spacing of 15 meters, which has better ventilation than the factory without KS VentFlow700 system. As a result, the accumulated heat layer is less than the factory without KS VentFlow700 system. This make the air flow from the front of factory into inside the factory better. The air circulation within the factory will decrease when the Heat Flux value in the roof area is higher.
*Heating value on the roof Shown by the heat energy intensity from the sun's radiation (Heat Flux) between 600 - 800 W/m2, which is the heat load during the summer in Thailand.
***Study with a building model measuring 125x25 m2 that has no openings (non-vent) on the roof gable.
