Retro-Commissioning Boot Camp - Energy Exchange · Energy Exchange: Connect • Collaborate •...

Tampa Convention Center • Tampa, Florida

Retro-Commissioning Boot Camp

Training: The Key to All Savings

Jay Tulley & Brian ClarkUS Army Garrison Presidio of Monterey & USACE Construction Research Lab

August [XX], 2017

Energy Exchange: Connect • Collaborate • Conserve2

It all started with this class


We RCx’d these two buildings in the class


Air Handling Systems

• 26,925 CFM Package Unit with • DWDI Air Foil Fans - 50 HP SF motor - 25 HP RF motor- Both fans with VFD’s- 26,180 max CFM cooling coil- 10,670 max CFM heating coil


Chilled Water Systems

73-ton, 125 GPM air-cooled chillerwith 4 compressors

2 split system A/C units for small server room- 17700 BTU/H (sensible) 20,500 BTU/H (total)- Two 550 CFM evaporator units in server room

200 gal tank Two 5-HP pumps


Heating and Domestic Hot Water Systems

100 Gallon 200,000 BTU/HrDomestic Hot Water Heater

Two 3/4 HP hot water pumps

800 MBtu, 25 GPM boiler for heating

hot water


System Diagrams

Energy Exchange: Connect • Collaborate • Conserve

• Hobo Loggers pictures

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Data Logging


Data Analysis

Simultaneous heating and cooling

Non-modulating OA Damper

Chiller running in morning when OA temp is in low fifties


Data Analysis


The data led me to find issues

Command 0% openCommand 100% open Command 0% openAfter repair


7 degree error

The data led me to find issues


Economizer operation before OA sensor replaced


Economizer operation after sensor was replaced


Pharmacy Temperatures were exceeding limits


We even learned some controls programming


How to transfer this to the Army?


Data Logging


Data Analysis


The first Army RCx Practicum


• Cloud graph

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We saw real savings

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Average Outdoor Air Temperature

Therms vs. Average Outdoor Air TemperatureWBAN 23259 Monterey Peninsula Airport

August 2012 - April 2014


We saw real savings

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- 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00

Ther

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Average Outdoor Air Temperature

Therms vs. Average Outdoor Air TemperatureWBAN 23259 Monterey Peninsula Airport

June 2015 - July 2016


We saw real savings

Baseline

Implementation

M&V period

Total Daily MMBTU at Building 607


We saw real savings


• Total energy chart – showing savings

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3,122 MMBtu$89,617

2,758 MMBtu$82,911

1,567 MMBtu$65,021

47% energy &$21,000 cost savings

We saw real savings


The second Army RCx Practicum


We did live webinars to prepare the students


Continued support from USAG Presidio of Monterey

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We are evolving our RCx training

USACE Contruction Engineering Research Lab (CERL) centralization

ASA (IE&E) funding for further RCx program development


Training Evaluation Form

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Class feedback has been guiding this evolution

1. Hands-on training was outstanding!

2. This is totally needed in the Army!!

3. I feel like I was hit with a firehose!!!


Instructor: “I have 30+ years of RCx experience, let’s get started”

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Fundamental challenge: diverse class competencies

Attendee: Cool! Hey what’s a psych chart?”


Year 2’s webinars helped, but not enough

Class lectures Scheduled webinars


How is the teaching community addressing this?


Flipped classroom model applied to RCx

Before on-site

• Initial exposure to key concepts

• Short topic-specific video lectures

• Spliced with practiced exercises

• Especially helpful for HVAC Fundamentals

During on-site

• Reinforcing key concepts• Guided practice with

hands-on applications• Focus on instrumentation

and field practices• Sustained reach-back with

videos and tech guides


Starts with an HVAC Pre-Assessment


Dear attendee X:

• 100% correct on HVAC equipment and air-side system sections

• We recommend self-study for pumping systems and HVAC controls

• Please follow these links for your training content

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Digital survey facilitates quick feedback


• YouTube video screen shots of narrated power points clip

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Videos are topic-specific


Excel Practice Exercises with Support Videos


Followed by interactive exercises


For RCx-specific skills, we’re compiling some content

“Launching and Reading out Portable Data Loggers” - PEC


• Khan Academy• Marriott AEP

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And supplemented by additional videos and exercises


Including Sketch-up model examples and exercises


Packaging the virtual field experience


This process allows for more hands-on RCx instruction


And related data analysis


Optimized RCx Practicum agenda

M T W Th F8am

IntroductionHVAC Refresher

Group MP Discussions Data Analysis

Group ECM Presentation9am

Field Scavenger HuntTest Instrumentation

OverviewEconomic Analysis

RCx Field Scoping10amBuilding Overview

Functional Test Rotations

Top RCx ECMs Final ECM Feedback

11amFacility Data Discussion BAS Overview

Working with Weather Data

Class Closeout

12pmLunch Discussion:

Pre-Assessment ToolsLunch Discussion:

Logging ToolsLunch Discussion:

RCx SOWsLunch Discussion:

Data Analysis Tools

1pm Field Safety Basics

Data Logger Rotations

AdditionalFunctional Test Lecture Perspective Discussions:

Occupants, O&M, BAS, and Cx

System Diagram2pm

System Diagram PracticeGroups Build

Functional Tests3pm

Monitoring Plans (MPs) Group ECM Selection4pm

Groups PerformFunctional TestsField Recap

5pm


Check out the videos – Search RCxU in YouTube


• Preparing for 11-15 September RCx Practicum

• Looking for additional sites for FY18

• RCx policy recommendations, templates, and how-to guides through ERDC-CERL

• Additional RCx services available

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Next steps


Jay [email protected]

Brian [email protected]

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Contact Info

mailto:[email protected]

mailto:[email protected]

Retro-Commissioning Boot Camp - Energy Exchange · Energy Exchange: Connect • Collaborate •...

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