Window Automation via Automatic Opening Vents (AOV) for Smoke Control and Natural Ventilation Systems

September 6, 2013 – 11:11

In order to ensure the effectiveness of the automated windows, it is essential to consider what the design team is trying to achieve. The simplest form of window automation is by using a simple open close switch to control the actuator.

The automated window system may be required to open in case of a fire. In this instance dedicated smoke detector or interface with a fire alarm system. Either way, it is important that the control panel contains a secondary power source such as back up batteries. By definition, this will help to determine the voltage of the actuator; if the control panel is delivering 24V dc then the actuator needs to be 24V dc.

It is possible to use rain sensors to ensure that the window closes if it rains. But more importantly are starting to add a logic sequence into the control strategy.

It may be beneficial for example within a school to limit the opening of the windows within specific time constraints that could simply be achieved by using a 7 day timer.

Because the need for some form of controller is now present to address the logic requirements, consideration is needed whether to increase the effectiveness of the window automation system by adding additional sensors at little extra cost. For instance, if the windows are to open (proportionally) as the room temperature rises. As indoor air quality is becoming increasing important for the well being and performance of the building users, then it is quite straightforward to add CO2 sensing to introduce fresh air and/or purge stale air by opening and closing the windows automatically.

An automated window system can be affected by external environmental conditions, such as wind speed and wind direction. By introducing simple algorithms, the efficiency of the system can be improved.

All aspects of the building’s overall heating and ventilation strategy should be integrated to maximise energy savings. How often is it seen that radiators are on but windows open, or windows open with internal blinds closed to prevent solar gain. It is important to recognise that these elements are complementary and shouldn’t be designed in isolation. If the building has a building management system, then it is often advantageous for the window automation to be linked to it, even if it is just reporting information – simple energy wastage can be avoided.

The window automation system is often linked to the overall fire strategy, hard wired interlinks are common, low cost effective ways of achieving this.


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Source: www.secontrols.com

Not much more than a 'weak' robot ..

2013-08-20 13:01:53 by EdgingFanFT

Many of the minimum wage jobs will eventually be replaced by robots capable of doing the job more effectively, for longer periods of time, without Breaks and they will never piss and moan about the crappy pay!
.. Face it, this has already happened.
So, where are the jobs going to be in the future? Building robots to replace minimum wage workers who HONESTLY do not want to be doing that $hit job anyway. So get thee to a mechanical trades school or a place teaching Mechatronics. Servos, motors, gears, sensors, transducers and actuators is THE FUTURE!

Lindal aims at eliminating the need for overcap with new actuator  — Premium beauty
The Lindal Group, a global developer and manufacturer of valves, actuators and spray caps for aerosol products used in pharmaceutical, cosmetics and food applications, recently launched a new twist-lock, overcap-free actuator that it claims to ..

Lindal Group Provides Aerosol Solution for Olive Oil  — Packaging Europe
.. the spray olive oils are a delight to use,” said Brand. The LINDAL Group is a worldwide leader in the development and manufacture of valves, actuators and spray caps for aerosol products and is renowned for its innovative packaging solutions.


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