performance of pneumatic energy in the smart building

performance of pneumatic energy in the smart building

 
By converting a building with working but outdated pneumatic control system to a Direct Digital Control (DDC), using wireless technology.  Wireless pneumatic Direct Digital Control (DDC) provides rapid payback and minimal disruption to gain ongoing energy and maintenance cost savings, while improving comfort and operations.
 

A large number of buildings with pneumatic control infrastructure are falling behind in energy management as digital systems and networks become more common and critical.  Clearly DDC enables better control and optimization, but in most cases the existing pneumatic systems themselves are still functioning properly.  The ideal solution would be a middle ground where the existing pneumatic system could be utilized with a DDC system, like a digital pneumatic version of a thermostat, but without having to install network wiring.  
Wireless Pneumatic DDC Thermostat Wi-Stat IIIp
 



Developing the recently released Wi-Stat IIIp wireless pneumatic DDC thermostat, Millennial Net has completely rethought how to address the challenges of pneumatically controlled buildings. It sought to cost-effectively combine the best-proven technologies, not just add a wireless radio to the old-style mechanical pneumatic thermostat.  Unlike conventional bi-metal pneumatic (mechanical) thermostats, the Wi-Stat IIIp is a solid state technology, operating without mechanical parts. 

Wireless


Wireless mesh network solutions are gaining acceptance as a reliable, practical and highly affordable means to retrofit existing buildings for monitoring, control and energy management. Several important capabilities are enabled by retrofitting buildings whether electric or pneumatic with wireless technology.
 

 Remote wireless set point control

Wireless lends itself particularly well for retrofit of pneumatic buildings because no power or network cables are present at the thermostat.  Recently innovators and early adopters have stepped up to demonstrate in pneumatic buildings that significant
energy efficient benefits can be achieved using wireless thermostats and sensors.  Primarily these wireless devices focus on lowering the cost of retrofitting over conversion to DDC and the benefits of connectivity and visibility.  Advantages of Wireless and DDC Combined
 

Millennial Net's wireless pneumatic DDC combines wireless communications, local processing, local and remote sensing, and closed/open loop controls.  DDC and Wireless combine to reduce the time and cost of installation, operation and maintenance.  Investment payback (typically 1-2 years) and sustainable energy efficiency are important reasons for this comprehensive control capability.
DDC helps better deliver occupant comfort while optimizing energy consumption and cost.  Modulation of pneumatic branch line pressure, acting on multiple inputs to accurately and responsively control zone temperature
 

Detection of pneumatic leaks (supply and branch)
Remote adjustment of control parameters to refine controls based on performance trend data
No adjustment screws, so need for calibration to reduce the cost of maintenance is eliminated
Low power (long battery-life) operation of set point adjustment, modulated control and mesh communications,
 

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