A Field Perspective on Engineering Commissioning Resources
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      • Plot Digitizer Pump Curve Example
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    • Cooling Towers
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  • Videos
    • Bureaucratic Affairs HHW Logic Answers
    • Cooling Tower Flow Variation
    • Economizer Stratification
    • Functional Testing
    • Induction Principles
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    • CW Pump Deadheaded by Tower Lift
    • Ripple Effects
    • Testing a Pump
    • The Garden of Low Entropy
    • Variable Flow Systems
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      • ACEEE
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      • Pacific Energy Center Design, Performance and Commissioning Issues Classes
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      • Pacific Energy Center EBCx Workshop Series >
        • EBCx Workshop Series 12
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          • Student One On One Discussions
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      • Portland General Electric
      • U of W >
        • U of W Archive
    • On Demand Training >
      • Benchmarking UCA and Scoping
      • Loads and Psychrometrics
      • Induction Motor Principles
      • Introduction to Functional Testing
      • Scope of Work Documents
      • System Diagraming
    • Training Opportunities
  • Contact
    • Copyright and Permissions
  • Home
    • What's New
  • Blog
    • Blog Support
  • SketchUp Models
    • SketchUp Resources
    • Bureaucratic Affairs Building HHW System Logic Exercise
    • Bureaucratic Affairs Building Scavenger Hunt
    • Chilled Water Plant System Diagram Exercise
    • The HIjend Hotel >
      • Chilled Water Plant Scoping Exercise
      • Ballroom AHU Scoping Exercise
      • Cooling Tower Scoping Exercise
  • Tools
    • Altitude Correction Factor
    • Economizer Evaluation Checklist
    • Eikon for Educators and WindLGC
    • Effective Duct Length Tool
    • Excel Third Axis Tool
    • Excel Time Value Conversion
    • Insulation Savings Tools
    • Logic Diagram Tool >
      • Logic Diagram Example - Discharge Air
      • Logic Diagram Example - CHW Plant 01
      • Logic Diagram Example - VAV AHU
    • Mixed Air Calculations
    • Monitoring Plan Spreadsheet
    • Pipe Friction Chart
    • Plot Digitizer >
      • Plot Digitizer Pump Curve Example
    • Square Law Spreadsheet
    • System Diagram Symbols
    • Thermodynamic Diagrams Spreadsheet
    • Universal Translator Data Analysis Tool
    • y = (m * x) + b Spreadsheet
  • Useful Formulas
    • Affinity Laws
    • Circular Equivalent Duct
    • Effective Duct Length
    • FT Guide Appendix C
    • HVAC Equations and Concepts
    • Hydraulic Diameter
    • Pump Power and Energy
    • "Square Law"
  • What's That Thing?
    • Cooling Towers
    • Pumps
    • Valves
  • Resources
    • Bill Coad's Writings
    • Data Logging Resources
    • EBCx Skills Guidebook
    • Energy Design Resources
    • Fisher Controls Valve Cavitation Bulletin
    • Functional Testing Guide
    • Honeywell Gray Manual
    • MCC Powers Bulletins
    • NBCIP Reports
    • PEC Tool Lending Library
    • PID Resources
    • Pneumatic Control Resources
    • Resource List
    • Scoping Resources
    • TAB Resources
    • Vintage Carrier Design Manual
    • VRF Systems
    • Williams' Wisdom
  • Videos
    • Bureaucratic Affairs HHW Logic Answers
    • Cooling Tower Flow Variation
    • Economizer Stratification
    • Functional Testing
    • Induction Principles
    • Monitoring Plans
    • CW Pump Deadheaded by Tower Lift
    • Ripple Effects
    • Testing a Pump
    • The Garden of Low Entropy
    • Variable Flow Systems
  • Training
    • Materials from Classes and Presentations >
      • ACEEE
      • ASHRAE
      • ASHRAE - Engineers Notebook
      • BCxA and NCBC
      • BEST Institute
      • Case Studies
      • ERDC 2020 RCx Academy
      • ELPNW
      • ICEBO
      • Marriott AEP
      • Magazine Articles
      • NAVFAC
      • Pacific Energy Center Design, Performance and Commissioning Issues Classes
      • Pacific Energy Center EBCx Project Review
      • Pacific Energy Center EBCx Workshop Series >
        • EBCx Workshop Series 12
        • EBCx Workshop Series 13
        • EBCx Workshop Series 14
        • EBCx Workshop Series 15 >
          • Student One On One Discussions
        • EBCx Workshop Series 16
        • EBCx Workshop Series 17
        • EBCx Workshop Series 18
      • Portland General Electric
      • U of W >
        • U of W Archive
    • On Demand Training >
      • Benchmarking UCA and Scoping
      • Loads and Psychrometrics
      • Induction Motor Principles
      • Introduction to Functional Testing
      • Scope of Work Documents
      • System Diagraming
    • Training Opportunities
  • Contact
    • Copyright and Permissions

Videos

This page serves as the gateway to the videos we have on the site.

Ripple Effects

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These video clips look at how a disturbance in one system can ripple out and cause problems in other interconnected systems.
Go There

Tower Flow Variation

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Uniform flow distribution over the fill of a cooling tower is crucial to its performance, but may not always be there.
Go There

Induction Motors

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In these videos, I demonstrate the basic principles of induction, which are behind how the induction motors we typically use in our building systems work.   
If you want to know more about ​induction motor theory, you will find a set of training videos on the topic located on the On Demand Training section of the web site.
Go There

Pump Test

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This video walks through the steps in a pump test including demonstrating that as the load on the pump motor decreases, the speed of the motor shifts up from the nameplate rating, which is associated with full speed, towards synchronous speed.  In other words, it illustrates how slip for a three phase induction motor will vary with the load on the motor.
Go There

Stratification

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This video shows how stratification can vary in a mixed air plenum as a system goes through its operating cycle over the course of a day.  The pave also includes some other information and images related to stratification in mixed air plenums.
Go There

Logic Answers

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This string of videos walks you through the answers to the Bureaucratic Affairs Building HHW System Logic Exercise.
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Monitoring Plans

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Monitoring plans are tools we use to organize our data collection efforts for existing building commissioning projects.  This video provides an overview of what a monitoring plan is and what you should be thinking about as you develop one.   You will find some related resources on the Monitoring Plan Spreadsheet page of the website
Go There

Variable Flow Systems

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This play list includes a video that discusses the various common types of pumping systems that are found in buildings, including constant flow, variable flow, variable flow primary/secondary and variable flow primary only system.  The second video takes a closer look at how a variable flow primary-secondary heating hot water system works.
Go There

Functional Testing

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This play list explores the role of functional testing in existing building and new construction commissioning processes.  A case study is included that illustrates how a simple test was devised to "ask the building a question" about an operating problem and how the test results were used to inform a relatively simple modification to the control logic to solve the problem.  
Go There

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