1.0 overview - trend controls seminar... · t here are many different solutions available to...

© Trend Controls Limited2

Trend Building Energy Management Seminar conformance to performance..........

........get off to a flying start

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1.0 Overview2.0 Story of a building3.0 The BEMS

Building Energy Management System

4.0 Taking back control

........get© Trend Controls Limited

1.0 Overview

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WWhy manage the energyperformance of yourbuilding?

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........get off to a flying start

TThere are many differentsolutions available toimprove energy efficiencyso it is important thatactivities are prioritised.


........get off to a flying start© Trend Controls Limited

1.0 Overview

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TTrend has been designingand manufacturing BuildingEnergy ManagementSystems for over 25 years.

Choice of supply is ensuredby a proven worldwidenetwork of 450 partners



1.0 Overview

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TTrend BeMS products arefully backward compatiblemeaning the earliestproducts can communicatewith the latest generation.



1.0 Overview

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AA Building EnergyManagement System cancontrol and manage over80% of a buildings energyuse. This means thatimprovements made to theBEMS can have a significanteffect on energy use andwaste.



2.0 The story of a building

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TThe requirements andusage of a building willchange over time. But rarelyis the BEMS updated to takeaccount of this.




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AAt installation the cost ofthe BEMS is relatively smallbut the effect it has on therunning cost of the buildingover time is significant. It isimportant therefore toensure that the BEMSspecification is not dilutedduring the buildingsconstruction.




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TThe architect and clientsvision for a building canoften be far reaching andambitious.




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TThe contractual chain putsa strain on the specificationof the BEMS. During thisperiod the specification maybe changed by thecontractor in order to cutcost.

Also, becausecommissioning takes placeonce the building iscomplete, the time allocatedis often cut which hasimplications upon theeffectiveness of the controlsystem.




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TThis in turn can often havea detrimental effect on theenergy performance of thebuilding even before it hasopened.




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TThe energy efficiency of thebuilding will be at it’s peakprior to occupation. Thischanges very quickly oncepeople arrive.




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PPoor location of officeequipment can have aserious effect on energyconsumption.

The example shown istypical of many buildingswhere the heating andcooling systems are inconflict and run at the sametime.




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AAs a building evolves overtime the position of internalwalls and room dividers areoften altered with noconsideration fortemperature sensors. Thiscauses problems withcomfort conditions forbuilding occupants and islikely to result in windowsbeing opened and fanheaters being introducedcausing energy waste.




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CChange of use within abuilding is common. Thiscan lead to the heating andcooling of environmentswhich are not temperaturesensitive such as storerooms.




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BBusiness equipment is asignificant generator of heat.

The position of equipmentcan effect the correctperformance of sensors thatare located around thebuilding.




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OOperational hours within abuilding are frequentlychanged over time. It is verycommon for the BEMS to beoverridden in thesecircumstances to ensurecontinuity of buildingservices. Once overriddenthe system is frequently leftin that state causing plant tobe running continuously.This will have a seriouseffect on energy use.




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SSimple mechanical failurescan be very expensive.

The example shownillustrates a sticking valvewhich caused extra demandon the main heating plantand significantly increasedenergy consumption.




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SSimple problems such asthe examples given can bedifficult to detect and willoften remain undetected formonths or even years.




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TThe BEMS is amanagement system thatmonitors temperature, light,pressure, humidity etc andthen in turn controls buildingservices such as heating,cooling, lighting etc.



3.0 Building Energy Management System - BEMS

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EEach control strategy (aninternal BEMS program) isdesigned around thebuilding and it’senvironmental requirements.A correct strategy is vital forcost efficient control ofbuilding services


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TThe fastest route tosustainable energy savingsis to adopt a continuousprocess of review andsystem optimisation for yourBuilding EnergyManagement System

This best place to start is toREVIEW your currentsituation.




IIn order to identify what canbe achieved, it is importantto understand the currentsituation within a building.This can be accomplishedby undertaking a ControlsEnergy Audit. The aim of theaudit is to review the waythe building is being usedand to identify opportunitieswhere energy savings canbe made.






AA Trend Controls EnergyAudit follows a proven seriesof steps designed to identifyenergy waste and prioritiseenergy saving opportunities.


TTrend has completedEnergy Controls Audits atover 770 sites delivering inexcess of £3.4M of energysavings ( Jul 2010 data).






FFollowing the REVIEWprocess the next step isMONITOR


MMonitor - Understandenergy consumption andidentify & target irregularusage.

The iMAT2 system allowsclients to overlay energyconsumption data withBEMS performance datausing a web browser, eithervia the internet or acompany intranet. Data thatcan be viewed includes notonly current values but alsographs of historic trends.




FFollowing the MONITORprocess the next step isACT.

This maintains energymanagement & control andensures the environmentalperformance remains withinthe defined limits.




UUsing the remotediagnostic capabilities of theTrend BeMS, it is nowpossible to improve ontraditional service methodsto deliver greater levels ofreliability and energyperformance.

Trend’s IQ EYE systemperformance product willremotely interact with yourBeMS to diagnose andvisualise system problemsand performance issuesbefore equipment failureoccurs.




FFinally DEMONSTRATE -displays energyperformance to encouragestake-holder buy-in.

Trend EnergyEYE is asoftware application thatprovides a dynamic view ofa buildings energyperformance. Theapplication has beendesigned for large formatmonitors to be viewed inhigh traffic areas.






In conclusion - a continuousprocess of review andsystem optimisation is thefastest route to sustainableenergy savings.




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OOver time the energyperformance of a buildingwill decline. There arenumerous causes, many ofwhich relate to the way thebuilding is used and thebehaviour of the occupants.

Whilst it may not be possibleto eliminate all the causes itis however easy to monitor,track and continuallyoptimise energyperformance - all it requiresis a little know-how.




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IIn order for any energymanagement initiative to besuccessful you need to haveprocesses in place tomotivate and manage thebuilding occupants in orderto gain their active support.




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IIt is important to monitorand track changes that havebeen made on your site.

The example left using IQ EYE shows a temperaturesetpoint that was changed.With a BEMS comprising ofmany hundreds of setpointsit is important to monitor allsuch adjustments in order tomaintain control.




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TThis is another example ofmonitoring using the Trend963 supervision software. Itis possible to see multiplesetpoints on a single pageand to quickly identifyirregular changes andadjustments.




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TThe Trend 963 displaygraphic pages can becustomised to providebuilding information to anyoccupant.

The example shows theexpected temperature rangefor a specific location. Theuser can only log a fault callif the temperature is outsidethe set parameter. Providingusers with informationreduces unnecessarycomplaints and counterproductive actions such asopening windows.




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PProviding visibility of theBeMS data in a graphicalform can help buildingowners easily identifyanomalies which aredetrimental to energyperformance.

The example shows a poorlyperforming system ‘start &stop’ and a lighting circuitbeing overridden on atennis court. Theseinstances can be easilyidentified and rectified.

Without the use of suchtools these issues may goundetected for long periodsof time.




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IIt is important to ensure allinformation that is relevantto the environmentalconditions of the building islinked back to the BEMS.

For example, using metersto monitor energy usagecan result in savings of upto 5%.




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TThe extensive datacontained in a BeMS canprovide all the necessaryinformation to help buildingowners make informeddecisions and prioritise theirenergy managementactivities within theorganisation.




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MMonitoring a Trend BeMSusing IQ EYE will enable auser to identify areas of poorperformance allowingbuilding owners to prioritiseresources efficiently.

The example shows how theuse of a traffic light systemidentified a problem in avariable temperature circuit.The issue was quicklyresolved and additionalenergy demand on siteprevented.




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AA Building EnergyManagement System(BEMS) should be specifiedto make the most of currentDesign Best Practices.

Correct consideration ofenergy performance overcomfort conditions can beincorporated into the systemdesign to ensure theexamples (shown left) areundertaken automatically.




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WWhen adding plant orequipment to a building it isimportant to integrate it withthe existing BeMS.

This ensures you retaincontrol of all the energyconsuming components inthe building which in turnreduces the chance offuture system conflicts,which would otherwise resultin increased energy waste.




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AA continuous improvementprocess is vital for themanagement of energyperformance and buildingservices.

Such a process can reversethe deterioratingperformance of a buildingthat has occurred over timeand in turn makesustainable energy savings.




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TThis presentation is designedas a short summary of therecent Trend Building EnergyManagement Seminar.

For more information or if youwould like to arrange ameeting to discuss yourrequirements please clickhere

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