Brice Kosnik – CEO buildpulse

Utilizing Analytics to Drive Change in Buildings

Benefits of Analytics

buildpulse

Prioritizing Service

Improving Operational Efficiency

Reducing Complaints

Retaining Knowledge

Implementing Best Practices

Identifying & Fixing Issues

Changing Operational Practices

Driving Conversation with Stakeholders

Ways to use data

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How we do it today.

• Graphics

• Alarms

• Trends

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Basic Analytics

How long does it take to?• Test Every Sensor, Valve,

Damper, & Relay• 90 buildings• 2 Dedicated Techs

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Basic Analytics

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Basic Analytics

• Answer

40 buildings / year

Common Issues Found in Commissioning

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Top 12 Issues1. HVAC system operates continuously during unoccupied

period 2. Lighting system illuminating space during unoccupied

period 3. HVAC system improperly balanced 4. Improper refrigerant charge 5. Economizer dampers operating incorrectly 6. Insufficient evaporator airflow 7. Improper controls setup8. Control component failure or degradation 9. Software programming errors 10. Improper controls hardware installation 11. Air-cooled condenser fouling 12. Valve leakage

• Setpoints• Scheduling• Sequences

Reference: PNNL - A Guide to Building Commissioning

Foundation

Analytics automates the manual processes and audits that we don’t have time for.

4 Man Years Or 5 Minutes

Its About Automation

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Manual Inspection still requires verification

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Building Efficiency Overtime

Energy Savings

Setpoint Analysis

Night High LimitRoom Cooling SPRoom Heating SPNight Low Limit

K-12 School District – 2 HS \ 1 MS \ 1 ES - Sample 345 Classroomsbuildpulse

Setpoint Analysis

VAV Sequence Refresher

Control of a VAV reheat terminal to vary airflow during heatingASHRAE High Performance VAV Systems, ASHRAE Journal Oct 2011, John Murphybuildpulse

VAV Sequence Refresh

Actual VAV Performance

Data Taken From typical Reheat VAV – City Building

Discharge Air TemperatureRoom TemperatureReheat Valve

Room Heating SPRoom Cooling SP

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VAV Actual Performance

Schedule to Actual Occupancy

Start up each Zone individually so that it reaches Heating or Cooling Setpoints at

Occupancy

Adjust Heating and Cooling Setpoints so that all zones have 0 heating or cooling

load at UnOccupied. buildpulse

Schedules Optimal Start / Stop

University Lecture Hall

Optimal Start w/ Staging1 AHU & Exhaust Fans Running All Nightbuildpulse

University Lecture Hall

Ineffective Optimal Start

Cooling SetpointFan CommandRoom TemperatureDischarge Air Temperature

Optimal Start Cooling with no Cooling available

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Ineffective Optimal Start

Office Building

No Optimal Start \ StopVentilating during Unoccupied

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Office Building

Temperature Set Point Policy

10-15%

Deadband Temperature

Policy

3-5%

Night / Weekend Set Point & Schedules

5-10%

Water \ Air Static Pressure

Resets

2-5%

2500 kWh/ Year / 1000 SqFt

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Energy Savings

Other Examples

• Temperature Resets• Pressure Resets• 24 Hour Operation• Chilled & Hot Water Plant operation• Simultaneous heating and cooling• Economizer Analysis• High \ Low Discharge Air Temperature

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Other areas – most teams don’t get to.

Operational Improvements

Operational Savings

Automatic Calibration

Reduced Tenant

Complaints

Faster Troubleshooting

On-Going Cx

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Operational Savings

Automatic Calibration

• Adjust Setpoints• Predictive Weather controls• Load Shedding

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Automatic Calibration

Faster Troubleshooting

Should:Provide Associated Data, Problem & Solution

Should Not:Require you to dig through data

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Faster Trouble Shooting

On-Going Cx \ Prioritize Service

Should:Apply Cost and ROI to Prioritize Faults and IssuesPrevent Drift

Should Not:Overwhelm you with information

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Ongoing Cx - Prioritizes Service

Reduced Tenant Complaints

• Less Task Switching• Proactive Service

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Reduce Tennant complaints

Operational Savings

Result3 Hours / Year / 1000 SqFt

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Operational Savings

Security

Other Benefits

Security(Cloud)

Consultants and Contractors have access to data without needing access

to your network

Data Historian(Cloud \ Local)

All data should be archived regardless of Configured Trends

REST API(Cloud)

Open & Secure data sharing with other platforms and Analysis Tools

Energy Star \ Utilities(Cloud)

Aggregation of Energy Star, Utility Interval Data

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“Cloud” Advantages

Driving Change

Reduced Tenant Complaints

1-3% utility savings per year for every degree of deadband implemented.

Clear reporting of time series temperature analysis, policy, and best practices, results in

positive and productive conversation.

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Comfort

Reduced Tenant Complaints

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Policy Conversations

Design & Operate, for “Off”

Shutting down equipment in swing seasons can save a lot of energy. But it can be hard to

quantify and it will result is discomfort. Analytics quantifies the savings and enables

the conversation to drive policy change.

Reduced Tenant Complaints

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Habits and M&V

Did it get Fixed? Is it performing how we thought it would?

Automate Verification

Reduced Tenant Complaints

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Capture Knowledge

Facility Engineers know their building. How do we prevent their knowledge from retiring with

them?

Enable low friction methods of capture, alignment, and storage.

Brice Kosnik – CEO buildpulse

available onlinebrice.kosnik@buildpulse.com

Utilizing Analytics to Drive Change in Buildings

Zone Deadband

Setpoints & Deadbands

Zone Heating

Zone Cooling74 DegF

68 DegF

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Setpoints & Deadbands

Night High \ Low Limit

UnOcc Deadband

UnOcc Heating

UnOcc Cooling78 DegF

58 DegF

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Night High / Low Limits