Intelligent Metering For Intelligent Buildings
19 May 2005, News release from Sensus Metering Systems Inc.
One of the world's foremost financial groups is setting the pace in energy management by creating an 'intelligent' building that's efficient to run and sensitive to environmental impact.
The company has adopted an holistic approach to energy measurement - whether it be electricity, gas, heat or water - by embracing the latest developments in metering and monitoring technology at one of its major centres in London.
Sensus Metering Systems, who supplied and commissioned the technology, says that the system is in keeping with incoming requirements of the EU Energy Performance of Buildings Directive, which is set to increase significantly the onus on building owners to scrutinise energy performance and to certify efficiency.
The Directive, which comes into effect in January 2006, requires the adoption a rigorous methodology that provides clear and comparable information on the exact use of all the energy used within a building.
At the heart of this methodology is accurate metering. In the case of this financial services company, this meant the installation of metering technology that enables energy usage to be measured with considerable accuracy floor by floor and area by area & and all remotely by using ultrasonic energy meters andautomated reading devices, with the potential to interface to web-based data transfer and interrogation technology.
"Traditionally, energy consumption has been apportioned on a floor-by-floor or square metre basis - but the system installed in this building creates a much more detailed picture of consumption by application," comments Jamie Longman, Business Development/Project Manager, Systems and Services, at Sensus Metering Systems.
"Building regulations require energy consumption to be sub-metered in multi-occupancy premises, but the incoming Directive extends the concept of measurement still further into the areas of energy performance and efficiency. The latest metering technology makes it possible to monitor energy wherever it flows within a building, providing a much more accurate picture of consumption, efficiency and cost."
The Directive is highlighting the need to use metering technology as a front-line management tool to identify patterns of energy usage, so that poor practice can be challenged and waste minimised.
In the London project, the strategy was to install an intelligent metering system that could identify energy usage within individual work areas and measure energy consumption in more detail.
Sensus located 31 ultrasonic energy meters, designed to measure heating and air conditioning applications, throughout the building - and linked these, together with bulk water meters and electricity meters, to an M-Bus reading system that transmits data to automated reading software.
This enables readings to be collected across the network on a regular basis, providing the building's facilities management, and the owners of the premises, with highly accurate information for billing purposes & and key data for the development of energy comparisons and environmental strategies. The detection and reading of all meters on the system is automatic - all driven remotely in a web-based environment from a standard pc running Dokom software.
"Effective energy management means that the building owner not only minimises consumption, but also receives regular reports on all energy usage by area, enabling strategies for minimising consumption to be implemented," says Jamie Longman.
"Unusually high readings, for example when lights are left on or when air conditioning units are left running overnight, are also identified and brought to the attention of occupiers. The technology also means that energy costs can be directly apportioned against specific occupier usage, rather than by square metre, if desired."
The building owner, or facilities manager, has remote access to an information pool that enables data to be manipulated according to need - in the case of energy meters this would typically chart the amount of energy used (in Kilowatt hours) and the volume of hot water passed (in cubic meters).
Such tables can be exported from Dokom on a regular basis by a scheduler and then used to inform other applications, such as billing software, Oracle databases or Excel. The build up of readings enables property owners and managers to graph the outcomes and so identify usage trends and anomalies.
The Sensus system installed within the building includes the following technology:
· Meijet water meter, a single jet meter for cold water up to 50°C, Class C - highly accurate metering of drinking water even at very low flow rates
· PolluStat ultrasonic energy meter, a universal energy consumption meter for water heating and refrigeration applications. The flow meter has a turndown ratio of 1:200, enabling accurate measurement over extreme flowrate variation. The standard optical data port can be used for reading the meter with a mobile data collection system
· PadPuls M4, an M-Bus slave pulse collector that connects up to four consumption meters
· Dokom CS Automated Meter Reading Software, custom-configured to read resource meters (energy, gas, electricity) through an M-Bus network, telephone lines and/or radio. The software is compatible with GSM, power line and internet transmission. Detection and reading of all meters connected to the system is automated
See us at NEMEX 2005 - Stand G8
For further information please email Sensus Metering Systems Inc.