Old Labs, New TricksTALES FROM THE FRONTLINES OF ENERGY EFFICIENT REFURBISHMENTS

IntroductionWho we are – EECO2 and TEL

The ‘typical’ efficiency project cycle

Case studies

Auto Sash Closer retrofits

Questions

Who We AreEECO2 – Energy Efficiency ConsultancyEnergy efficiency engineers we specialise inHVAC and also provide Process, electrical,controls and refrigeration engineeringCombined 100+ years experience of Design,Build & Operation of Hi-tech, Life Sciences &Industrial Facilities8 years providing global energy projectimplementation and supportSharing industry best practice solutionsCapital avoidance approachSafely driving innovation within industrieswhere product quality is foremost

TEL – Airflow Monitors & ControlsTried and tested products with over 100,000TEL Monitors and Controls in laboratoriesacross the world.Full service including: design consultation,product supply, installation andcommissioning, training and technical back-up.Retro-fit solutions for laboratoriesconverting constant volume fume cupboardand make-up air supply installations to VAVAutomatic fume cupboard sash closers forall types of new and existing fumecupboards to guarantee projected energysavings.

Laboratory Savings opportunityFor example, an estimated 750,000 fume cupboards in use in the U.S.,

Estimated operating cost of these fume cupboards is approximately◦ $4.2 billion per year◦ peak electrical demand of 5.1 Gigawatts◦ Equivalent to peak US solar capacity!

Ref: ‘Energy Use and Savings Potential for Laboratory Fume Hoods’ Evan Mills, Ph.D, LBNL, 2006

A ‘Typical’ ProjectOur experience of a typical energyreduction programme

- Site Investigation

- Potential projects

- Metering & Targeting

- Project Implementation

- Verification

- Ongoing Reduction / Future Projects

Site Investigation

Ø User requirementsØ Safety IssuesØ Building Operating PlanØ Sequence of Operations

Potential Projects

Ø Payback Criteria (Baseline?)Ø Site user concernsØ Technical considerationsØ Multiple project integrationØ Financing

Metering & Targeting

Ø PatienceØ Right peopleØ BEMSØ M&V Plan

Project Implementation

Ø Buy-in from all teamsØ Faculty, Users,

Maintenance Teams,PMs, Engineering

Ø Share the responsibility

Verification

Ø Be clear on your baselineØ Calibrated Energy modelØ Normalised data

Ongoing Reduction / Future Projects

Ø Set useful alerts on key metricsØ Use the data to reinforce the message

You arehere

The Wilton Centre Journey

Step 1• The journey

starts

Step 2• T-Block Pilot

Project

Step 3• The Action Plan

Step 4• Approvals

Process

Step 5• Implementation

Process

Step 6• Outcome

Implementation1. Remove 50 extract fans and install

ducted bridge2. Upgrade supply AHU’s

• low energy filtration• High efficiency motors• Motor VFD’s c/w dynamic control

3. Install VAV dampers4. Install fume cupboard VAV controls5. Install room by room ΔP control of

supply air

Before After

The OutcomeVerification:

•Rebalanced HVAC system to new lower air volumes

• Initiated planned diversity – checked operation – passed Users tests

•Measure & record Capture Face Velocity (CFV) of all the fume cupboards

•Smoke tested to demonstrate safe operation & containment with User EHS Team – filmed for User training

Commercial verification:

• In addition to the Clients own meters we installed a second MM&T metering system

•The Clients metering system identified a 60% electrical energy reduction + a site wide steam reduction of 9.5 %

•Our energy monitoring system identified slightly less energy savings

•We used the lower figures to calculate a simple payback of 14 to 18 months

•All Phases completed over a 3 year period – project completed 3 years ago

•At todays site energy costs the payback would be under 10 months

Saving Verification

Results:• Reduction in monthly Electricity consumption from around 150 MWHr has reduced to around 60 MWHr• 9.5% Reduction in steam use for the whole Wilton Centre• Data from Clients own metering

Auto Sash Controller

How does the PIRPersonnel Sensor work ?

q The PIR sensor maps the area in front of the Fume Hoodand detects the presence of the operator. The sensor will re-learn the area if objects are placed in front of the FumeHood - eg stools , equipment etc.

q The operator can stand completely still in front of the FumeHood whilst observing or reaching in to the Fume Hood andwill be seen by the sensor.

q The Red LED on the sensor indicates that the operator ispresent and the Keypad will display USER PRESENT – thesash will not automatically drive down if the operator ispresent.

q When the operator moves away from the fume hood aGreen LED will be illuminated on the PIR sensor and theKeypad will display a countdown timer – the sash will startto close when the timer reaches 0 secs.The Keypad will display SASH CLOSING as the sash drivesdown and SASH CLOSED when the sash reaches the closedposition.

Auto Sash Controller

How does theSash Safety Beam work ?

The sash safety beam will prevent the sashclosing if there is any obstruction in theplane of the sash.Two options are shown below – bothoptions will detect GLASS objects

Under Sash Single IR Beamor

Multi-beam IR Light Curtain

Single beamReflective Strip

Multi-beam Receiver Multi-beam Transmitter

Single beamTransmitter Receiver

Under Sash Single IR Beam - a single combined Transmitter / Receiver is mounted under the Sash handle and moves up and down withthe Sash. An IR beam is transmitted across the open sash and is reflected back to the Receiver. If this beam is broken by an obstruction the Sashwill not close

Multi-beam IR Light Curtain - a fixed IR beam transmitter is fitted to one side of the Fume Hood and produces multiple beams acrossthe sash opening. A fixed IR beam is fitted to the opposite side of the Fume Hood. If any single beam is broken by an obstruction the sash willnot close.

Auto Sash Controller

Auto Sash Controller How does theSash Drive work ?

Thank You - Any Questions?EECO2 www.eeco2.co.uk T. 01625 660717 E. info@eeco2.co.uk