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  • 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
    • 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
    • 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 >
        • PEC Class Materials Archive
      • 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
      • Portland General Electric
      • U of W >
        • U of W Archive
    • On Demand Training >
      • Fans, Ducts and AHUs
      • Induction Motor Principles
      • Introduction to Functional Testing
      • Scope of Work Documents
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Case Studies

The links below will take you to various case studies that are generally on existing building commissioning and operations topics.

Please note that I am just starting to shift this content to here from my Google Drive location so it may take a while to get the content for the entire series of class here.   But you can still find the content at the Google Drive location that is referenced in my blog.
Pump Optimization
Clean Room Make Up Cx
Chilled Water Flywheel
 

Pump Optimization Case Study

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This case study looks at the dynamics of a large condenser water system were under design conditions, the pump selections were dead on, but if only one chiller was in operation, a condition that occurred 70-80% of the time, then the pump that was in operation ran out its curve and delivered significantly more flow than was required by the chiller it served.

The savings potential was in the $1,100 to $15,000 range depending on how you went about capturing the savings.  These slides look at:
  • What the options where,
  • The savings associated with each option and how they were assessed,
  • The costs associated with each option and how they were assessed, and
  • The factors that drove the final decision regarding which option was the best fit for the facility
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Pump Optimization Case Study (pump_optimization_case_study_v9.pdf)
File Size: 2158 kb
File Type: pdf
Download File

 

EBCx Functional Testing and Chilled Water Flywheel Case Study

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System Diagram (leconte_chilled_water_v2.pdf)
File Size: 430 kb
File Type: pdf
Download File

An overview of this case study is provided on the blog in a post titled Retrocommissioning Findings: Leveraging a Chilled Water System Thermal Flywheel to Save Energy and Compressors – Overview. The details are contained in a presentation I did at the National Conference on Building Commissioning back in 2013.  The links take you to the presentation file and other related information like the system diagram and the test we used
NCBC 2013 (writing_a_functional_test_-_final_-_print.pdf
File Size: 8012 kb
File Type: pdf
Download File

Test Example (le_conte_mbcx_tests_-_chw_system.pdf)
File Size: 79 kb
File Type: pdf
Download File

 

Make Up Air System Optimization Case Study

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When I was a Facilities Engineer for Komatsu Silicon America, one of my first projects was to improve the efficiency of the make up air system serving our EPI clean room.   The system was delivering great quality in the clean room, meeting all of the production requirements in terms of temperature, humidity and particle counts.   But if you took a look at what was going on, it was using a lot more energy than it would need to.

The paper below is a case study of the project, including how we identified and resolved the issues along with some thoughts on why they happened in the first place.
Optimizing a Clean Room MAU (qualification_based_cx_vs.pdf)
File Size: 386 kb
File Type: pdf
Download File

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