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Buildings Working
l The Metasys Sustainability Manager from Johnson
Controls is designed to allow real-time energy management
and maintenance, helping to minimise energy costs. The
software allows building management systems to interface
with open protocol IT systems to better manage energy,
maintenance, physical security and compliance.
l ABB’s EIB/KNX system is said to work in a
fundamentally different way from conventional smart
building systems, in which central controls open and
close a separate electrical circuit to activate each individual
device, such as a light, blind or heating element. “This
conventional approach relies on hundreds of power cables
to effectively distribute commands around the building,”
says ABB.
With the EIB/KNX system, on the other hand, a sensor
or control device such as a light switch sends a control
signal over a twin-core data cable or bus to an actuator, Benefits to the end-user or end-client include a marked The TC Select system in
which then controls a device locally. “This approach yields reduction in engineering and commissioning time
a true two-wire system, without the need for hundreds of and auto-generation of plant graphics and operational
wires providing separate circuits between a central control description, leading to greater consistency and lower costs,
point and each light or other device,” says ABB. says Priva.
EIB/KNX control systems are an open standard
platform, making integration with lighting, heating and
air conditioning and existing BMS systems easier. l iMAT2 is a web-based energy monitoring application from Trend Control Systems designed to help building
owners identify areas of energy wastage and to therefore
l The Top Control Select (TC Select) MS Windows-based understand what is really happening to their energy
BMS application engine from Priva Building Intelligence consumption.
covers project estimation, engineering including “With iMAT2, there is now no need to develop specialist
generation of graphics, simulation of applications and building energy management system (BEMS) know-
control strategy, and final commissioning and fine tuning. how in order to understand what is happening within
Its library of control applications is said to cover 99 per a building. iMAT2’s web-based data collection and
cent of commonly used UK applications, but its real power presentation system allows Trend users to easily target
include a
is in its freely programmable mode that can cater for any inefficient energy usage,” the company says.
application or variation.
reduction in
engineering and
Valves and actuators
l Siemens Building Technologies has introduced
a range of pressure-independent control combi
valves for room and zone applications. The company
claims these reduce planning, installation and
commissioning costs, and boost control accuracy
leading to increased energy efficient operation.
In combination with Siemens’ Acvatix
‘electromotoric’ actuators, the combi valves are
specifically designed for use in ventilation and air
conditioning plants for the water-side control of the required flow rate, and pressure test points for
terminal units in closed hydraulic circuits, and for measuring the differential pressure integrated in one
heating zones with closed hydraulic circuits. valve body.
The valves incorporate a control valve for They can be used with flow rates from 90 to 3,000
temperature control, a differential pressure l/hr, and with differential pressure ranges from 14 to
controller for balancing pressure fluctuations in 400kPa.
the hydraulic system, a facility for pre-adjusting July 2009 CIBSE Journal 41
CIBSEjul09 pp40-42 controls.indd 41 26/6/09 12:10:12
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