Smart automated natural ventilation systems
We are in an era where the demand for smart and energy-efficient buildings is increasingly important. Moreover, numerous studies highlight the importance of air quality for people who work, study, receive treatment, and spend many hours in modern buildings every day.
We all open a window to ventilate, to adjust the indoor temperature, and we all hurry to close that window if the wind intensifies or it starts to rain. Wouldn’t it be nice if everything happened automatically?
We should know that:
- The temperature difference between the sunny and shaded facade of the same building can be 7-8 degrees Celsius.
- The concentration of Radon or CO2 inside a building can rise to levels that endanger the health of occupants.
- Natural ventilation is the cheapest and most energy-efficient method of regulating the temperature inside buildings.
KADRA offers modern ventilation systems controlled by microprocessors, equipped with intelligent window actuators that can help ensure a healthy environment and optimal temperature in office buildings, schools and kindergartens, public institutions, universities, and libraries, etc.
Why Intelligent Electric Motors for Windows?
Electric actuators for windows with ventilation and/or smoke extraction functions have existed for several decades. Such a motor opens the window as long as it is powered by electricity or until it reaches the end of its stroke (the maximum possible stroke constructively). It behaves the same way when closing. It operates permanently at the maximum speed it is capable of.
The new generation of intelligent actuators (MOD Bus) for windows brings additional important advantages:
- Controlled operation (partial opening);
- Real-time feedback (bidirectional communication with the control unit);
- Customized command for each actuator in the network (actuators in the same network can receive different commands);
- Adjustable opening speed (reduced noise during ventilation, and maximum speed during smoke extraction).
Why an intelligent automated natural ventilation system?
Here are just 4 advantages of a ventilation system based on electric window actuators:
- Energy savings for heating/cooling the building (by relieving the air conditioning system at certain times) – between 10% and 21%.
- Additional “Green Building” certification credits – between 3% and 11%.
- Increased productivity of people working/studying in the building (due to improved air quality) – by 3-18%.
- Reduction in the occurrence of “sick building syndrome” – by 25-67%.
In addition, intelligent actuators (BMS Line) can also be used for smoke extraction from the building in case of fire: the actuator on the same window will operate at a lower speed (and, implicitly, more silently) for ventilation, and in case of a fire alarm, the same actuator will operate at maximum speed and open the window to its maximum stroke (“full speed, full stroke”).
Intelligent automated natural ventilation systems can be integrated into both new projects and existing buildings (retrofitting), and there are two control options for intelligent window actuators:
- Integration into an existing BMS (Building Management System);
- Independent operation, controlled by a control unit.
The fire-resistant doors installed in the Pitești hospital have EI technical approval in Romania for fire protection. They are fire-resistant for 90 and 120 minutes, respectively, being constructed from galvanized steel casing, with internal reinforcing material, having a total thickness of 60 mm. The 4-sided “Z” type frame is fixed with anchors or dowels and has a removable lower crossbar.
To complete the solutions designed to secure the Pitești hospital building in case of fire, smoke vents were also installed, compliant with current regulations, especially the European standard EN 12101-2, which are essential for protecting people and the building in case of fire. By automatically opening the smoke vents, hot gases and smoke are rapidly evacuated, emergency exits remain visible, thus protecting people inside the premises. This also ensures oxygen intake and the elimination of toxic gases.
Intelligent Window Actuators – Integration into Existing BMS
This ensures:
- total control plus interaction and communication with other BMS-controlled systems (air conditioning, lighting, etc.);
- actuators have built-in “intelligence” – no additional control modules are needed;
- each actuator has its own identity (unique IP address);
- permanent bidirectional communication, with real-time feedback;
- the window can also be controlled by a locally placed button;
- smoke extraction control units are directly integrated;
- 100% compatible with ANY BMS system (Modbus RTU, KNX, BACnet, Lonworks, etc.).
Window Actuators – Independent Operation
System features:
- autonomous system, equipped with temperature, wind, rain, CO2 sensors (for indoor air quality);
- monitors changing indoor and outdoor conditions and operates windows to achieve/maintain optimal parameters;
- automatic reaction to rain and/or wind;
- local control, via button;
In addition to monetary advantages (energy cost savings, Green Building credits, increased productivity, etc.), an automated natural ventilation system contributes to ensuring a healthy microclimate in buildings, contributes to good air quality, and reduces the concentration of CO2 and dangerous gases (Radon, volatile organic compounds, etc.).
Of course, children being more susceptible to the negative influences of health-harming gases, public educational institutions (schools, kindergartens, nurseries) should be the first to benefit from automated natural ventilation systems with intelligent window actuators.
KADRA specialists are at your disposal to identify the requirements of each project and assist you, step by step, in finding the optimal automated ventilation and smoke extraction solution for any building, public or private.
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