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CxENERGY 2014
Ongoing Commissioning Using
Intelligent Building Systems
Green Valley Ranch Resort, Las Vegas, NV
April 23, 2014 11:15 am – 12:15 pm
J. Christopher Larry, P.E., CxA, CEM, LEED AP
Introduction
Headline, Headline (36 pt.)
J.
Christopher
Larry
Subhead, Subhead, Subhead, Subhead (20 pt.)
PE, CEM, CIPE, CEP, CXA, LEED AP
Director of Energy Engineering
“Harnessing BAS Data to provide
On-going Commissioning”
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Headline, Headline (36 pt.)
Subhead, Subhead, Subhead, Subhead (20 pt.)
CxENERGY
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Exp Energy Solutions Overview
Energy, Automation and Enterprise System Integration Services
• Leader in Open Protocol Automation
Engineering Since 1993
• Engineering Lead Design - Build
• Energy Engineering Services
• Retro-commissioning (RCx)
• Enterprise Solutions
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Master System Integration
Work Order Management
Metering & Energy Management
Fault Detection & Diagnostics
• Montioring-based commissioning agent
with ComEd and Nicor in Illinois.
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Agenda
What are we going to discuss today?
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What is the condition of our Cx industry today?
What is “Big Data”?
How to apply to Ongoing commissioning?
When to export BAS Data?
How to export BAS Data?
Methods to improve BAS Data for Ocx.
Products you can use for Ongoing commissioning?
Examples of real-time Ongoing commissioning?
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Condition of Cx Industry
What is our standard of care?
• Focus on contract documents.
• What did the engineer say it should do?
• Worry about if things work right maybe not efficiently.
• Most know it is not working right but not how to fix it.
• Just trying to get job done and not thinking about
what happens after you leave.
•Let’s use the BAS and technology to support.
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Ocx comparison
RCx, OCx and MBCx….continued savings.
*Lawrence Berkeley National Laboratory, June 2009 report ‐ Monitoring‐Based
Commissioning: Benchmarking Analysis of 24 UC/CSU/IOU Projects
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What is Big Data?
Where does this come from?
Big Data refers to the growth in the amount of
data which can be managed and used to run
your business.
• More data = greater accuracy
• Volume - amount of points and time
• Velocity – speed with which this data flows
• Variety – multiple formats and types
How can we use this for Ocx?
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Apply ongoing commissioning OCx
How do we do it for each case?
ASHRAE: Ongoing Commissioning Process:
verify that a project continues to meet current and
evolving Owner’s Project Requirements.
USGBC: based on Facility Operations and
maintenance Plan.
Energy Star:
• Tracks and maintains benefits from RCx
• Keeps building documentation up to date
• Keeps staff adequately trained
• Identifies new opportunities
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Ongoing commissioning OCx
References
LEED O+M: Ongoing Commissioning:
Intent -To use the existing building commissioning
process to improve building operations, energy, and
resource efficiency.
Establish an ongoing commissioning process (plan)…to
proactively address operating problems in the systems
being commissioned.
identify and correcting operational errors and deficiencies
Set up as a process not a tool or application
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Monitor-Based Cx (MBCx)
Another Type of Cx
A computerized system is installed:
• Installed to set trends and baseline
• RCx is done (using system and visual testing)
with relationships to baseline defined.
• OCx is followed to measure savings and verify
operation.
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ENERGY STAR PROCESS
How can this be used in OCx?
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Benchmark
Set Objectives
Take Action
Repeat Improvement
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LEED PROCESS
How can this be used in OCx?
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Outline plan
Find issues
Make Corrections
Repeat Process
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When to export BAS Data
When should you do this?
• This should be the first step (before RCx).
• This data will help you get a good picture of
what the systems are doing when you are not
there.
• Use this data to build a baseline or existing
condition.
• This may be a way to document the
improvement or set the baseline or outline a
fault condition.
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How to export BAS Data
How do you do this?
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You can use loggers (non-technical).
You can set up trend reports (a little better).
Integrate the BAS into an overlay system.
This data can tie into graphs & charts with
limits.
• This data can populate graphics (dials)
• This data can be used in equations to
determine faults or rules.
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Fault example
What does this mean?
Off Hours Operation Fault
RTU/SF_STS_RUNTIME
tagtimestate1({{par:variable}},now() - fromhours(24), now(), (75)
Midnight_Phase 0
x=IF(trueforduration(quality({{ac:/<<regionName>>/<<Name>>/HVAC/<<areaN
ame>>/RTU<<unitNumber>>/SF_STS_RUNTIME}})!=192,600000))
THEN IF
({{ac:/<<regionName>>/<<Name>>/HVAC/<<areaName>>/RTU<<unitNumber>
>/SF_STS_RUNTIME}} > 64800000)
THEN 1
ELSE 0
If actual runtime exceeds our expected or scheduled
runtime then we will issue a fault
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OCx Approach
Different forms of the same
Many different ways to get there.
All should employ analytics
• Building Automation Systems (BAS)
• Manual OCx with loggers or other devices
• Energy Management Systems (EMS) with
Dashboards
• Advanced Software Analytics with Fault Detection and
Diagnostic (FDD) tools
• Onsite Software
• Cloud (SaaS) Solutions
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OCx Approach
Different analytics and processes
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Alarms which warn of issues
Trending, dashboards and loggers
Trend analysis using algorithms
Advanced dashboards
Fault Detection and Diagnostic (FDD) tools
• System set up with rules to monitor and rank
performance of operation
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Methods to improve BAS data for OCx
Methods to do this.
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First you need standardization.
Naming and tagging needs set up, tree structure
Open systems, LONmarks, BACnet, Modbus, etc.
Pull only the information you need. Don’t pull all the
information. Information overload.
• Set up tagging
• Project Haystack
• Use a web server or web interface to collect and
transmit data.
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OCx Products
What are some examples? Sorry about the commercialism.
Intelligent Retro-commissioning
Software as a Service (SaaS)
Fault Detection and Diagnostics
Ezenics (Optimized Operational ReadinessTM) – SaaS with rules
KGS Buildings (ClockworksTM) – SaaS with fault definition
SkyFoundry (SkySpark) – On-site or SaaS software for your
customization
ICONICS
DGLux
Continuous Commissioning (CCx-Texas A&M)
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Why use Ocx?
What are the benefits?
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Can save 10% - 20% of your energy spend
Quick 1-2 year simple payback.
Savings are maintained (unlike other Cx projects)
Extends staff resources (staff can manage more
systems better)
• Simplifies BAS systems and their use and outputs.
• Helps with operational issues
• Comfort
• IAQ
• O&M management
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Examples
Dashboards
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From Upkeep Energy
Examples
Dashboards
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Examples
Dashboards
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Examples
Trends or Metering
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From Upkeep Energy
Examples
Profiles
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From Upkeep Energy
Examples
Trend Analysis from BAS or loggers
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From Upkeep Energy
Examples
Trend Analysis from BAS
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Examples
Faults (FDD) - Skysparks
After hours operation
Static Pressure reset issues
VAV zone level problems
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From Altura
Examples
Faults (FDD)
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OCx Cost and Software Cost
What costs are we looking at?
• Ocx costs from around $0.10/sf to $0.20/sf (based on
scope) Will be dependent on number of pieces of
equipment and systems. Size and type of building and
number of points.
• Packaged SAAS products:
Integration – ~$8‐15k for a single building
Ongoing SaaS – ~$0.05 to $0.09/SF per year
• Non SAAS products:
Software license is based on number of points
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From Upkeep Energy
Future of the of OCx
Where is Cx, RCx, OCx and MBCx going?
• All these industries are getting more automated and
integrated.
• How many Cx reports just sit on the shelf?
• How many Cx projects find good results but the operation
returns to its original condition months after its completion.
• OCx and MBCx will help keep the Cx plan current, visible,
and present as the project operation evolves.
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Conclusions
Take aways
• OCx and MBCx are the future
• Intelligent Building Integration and getting data from the
BAS is the way to go
• These solutions offer:
• Great immediate results with quick paybacks
• Are great efficiency and productivity gains
• You need a consultant who knows building systems,
knows Intelligent Buildings, know BAS and EEMS
software and is a CxA.
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