low energy ventilation 27th february 2014

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Many air handling units supply a volume of fresh air into a building at a constant rate and consume a considerable portion of the building energy. This rate was determined during the design stage originally to provide enough fresh air per person and to deal with a number of other environmental factors. Perhaps it is time to reassess this set-up and take advantage of energy saving opportunities. In the last session of our six-part series, we will be sharing our experiences and the approach our clients are using to save energy associated with their ventilation systems. We have also teamed up with Chris Mulholland from Critical Airflow, who will be presenting data and case studies from a number of projects on "demand-based" ventilation control systems. There will also be a demonstration on how the Workplace Footprint Tracker can be used to build the case for upgrading ventilation systems and to track savings. For more information: http://www.buildingsustainability.net

TRANSCRIPT

Charles Coe

Webinar Series

Low energy ventilation

Speakers

MikaelSoderman

Chris Mulholland

Who are Building Sustainability?

Target Actual Consumption

Who are Building Sustainability?

Target Actual Consumption

Who are Building Sustainability?

Target Actual Consumption

Today's Topic

The functions of a ventilation system to supply sufficient fresh air

to provide adequate indoor air quality by removing and or diluting pollutants from occupied spaces

to provide a heat transport mechanism.

HVAC Unit

The Opportunity?

The Opportunity?

The Opportunity?

Heating and Cooling?

There are situations where heating and cooling are running at the same time

Common to open up the dead band – but what does this save

A BMS is used to apply the controls however Metering is perfect to measuring the actual outcome

Source Cabon TrustHeating and Cooling and Air Conditioning

What about the Filters?

What about the Filters?

What about Humidifiers?

If you have to use them make sure they run on Gas

Conclusion? Fit metering to manage savings

Credit Melody Baglione, Cooper Union engfac.cooper.edu/melody/417

HeatMeter

Electric

Meter

Heat or

Electric

Meter

Electric

Meter

HeatMeter

Tracking Ventilation Projects

Baseload analysis Weather Normalisation Project Management ROI

Baseload

Project Management

Project Management

Project Management

ROI

ROI Tools

During project planning

During the project

Validating project outcome

Blog

Blog

LaboratorySolutions

Reducing energy, improving operation

and enhancing safety goals

Higher EducationHigher Education

Life SciencesLife Sciences

HealthcareHealthcare

K–12 SchoolsK–12 Schools

Commercial OfficeCommercial Office

Public AssemblyPublic Assembly

Aircuity can help:Aircuity can help:

Significantly reduce lab energy use

Significantly reduce lab energy use

Aircuity can help:Aircuity can help:

Reduce operational expenses

Reduce operational expenses

Aircuity can help:Aircuity can help:

Help to meet sustainability goals

Help to meet sustainability goals

Aircuity can help:Aircuity can help:

Improve lab operation

Improve lab operation

Aircuity can help:Aircuity can help:

Act as a value-add for EH&S personnelAct as a value-add for EH&S personnel

HVAC

50–70%

Lighting

20%

Other

10%

Lab energy consumption

Aircuity adjusts air change rates based on IEQ information

Hood FlowsHood Flows

Thermal Load

Thermal Load

ACH/Dilution

Requirement

ACH/Dilution

Requirement

Normal lab operation with dynamic control

VOC event sensed at GEX

ACH varies 4 to 12.7

A week of energy savings

TOTAL ACH

CFM

ACH

4/2 ACH4/2 ACH

6 ACH6 ACH

General LabGeneral Lab VivariumVivarium

8-10 ACH

4/2 ACH

8-10 ACH

4/2 ACH

15-25 ACH

10 ACH

15-25 ACH

10 ACH

The results of deploying lab DCV

So, what exactly is the Aircuity Solution?

So, what exactly is the Aircuity Solution?

AdvisorServicesAdvisorServices

Assurance

Services

Assurance

Services

OptiNet® System

OptiNet® System

Click to edit Master text stylesSecond level

Third levelFourth level

Fifth level

Lab Room 101 Lab Room 102 Classroom 103

Supply Air Duct

General Exhaust Duct

Click to edit Master text stylesSecond level

Third levelFourth level

Fifth level

IMSIMS

Advisor data

center

Advisor data

centerSensor Suite

Sensor Suite

BMSBMS

SUMMARY REPORTS

DATA GRAPHING AND EXPORTING

SMART NOTIFICATIONS

INFORMATION DASHBOARD

Beth Israel Deaconess Medical CenterCenter for Life SciencesBoston, MA

Beth Israel Deaconess Medical CenterCenter for Life SciencesBoston, MA

Energy retrofit across six floorsEnergy retrofit across six floors

Annual savingsAnnual savings $640,000

Return on Investment:Return on Investment:

< 1 year

The Biodesign Institute at

Arizona State UniversityTempe, AZ

The Biodesign Institute at

Arizona State UniversityTempe, AZ

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

Original airflow in LEED certified building

Original airflow in LEED certified building

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

DCV enabled DCV enabled

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

Aircuity detected thermostat flaw Aircuity detected thermostat flaw

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

After repair, expected energy reduction achieved

After repair, expected energy reduction achieved

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

Annual savings, phase 1:Annual savings, phase 1: $55,290

0 CFM

2,000 CFM

4,000 CFM

6,000 CFM

8,000 CFM

10,000 CFM

12,000 CFM

14,000 CFM

16,000 CFM

18,000 CFM

May-17 May-24 May-31 Jun-8 Jun-15 Jun-22 Jun-29 Jul-6 Jul-16 Jul-23 Jul-30 Aug-6 Aug-13 Aug-20 Aug-27 Sep-3 Sep-11

Exhaust CFM Supply CFM

~$1,000,000Annual building savings:Annual building savings:

How do we get started?

Thank You!

Thank you for listening

charles.coe@buildingsustainability.netmikael.soderman@buildingsustainability.ne

tc.mulholland@criticalairflow.co.uk

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