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  • SketchUp Models
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    • 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
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        • EBCx Workshop Series 16
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      • Portland General Electric
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        • U of W Archive
    • On Demand Training >
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CERL

TAB Information
Pumping Resources
2021-01-27 Materials
TAB Slides
Scope of Work Example
 

Testing, Adjusting and Balancing Information

dont_pass_around.zip
File Size: 65737 kb
File Type: zip
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The zipfile to the left contains some resources I am happy to share with the class.  But they probably should only be shared on a limited basis and not put up on a public web page because of copyrights.
  • I-P_A15_Ch38.pdf is the Chapter from the ASHRAE 2015 Applications handbook on Testing, Adjusting and Balancing
  • I-P_F17_Ch37.pdf is the Chapter from the ASHRAE 2017 Fundamentals handbook on Instrumentation.  Of particular interest for our discussion is the section that discusses pitot tube traverses.
  • NEEB Technician's Manual.pdf is my copy of the 1992 printing of the NEEB technicians manual, which is a really great reference and well worth the price of purchasing a paper copy.  But I sharing this would help you out in the interim and let you see what you would be getting if you bought it.  I believe it is only available as a paper copy product, probably to make it harder to proliferate on the web.
​You will also find some relate information that I felt I could put on a public page on the Vintage SMACNA TAB page.
 

Slide Sets From the TAB Focused Webinar

These are the specific slide sets I was referencing this morning during the webinar.   They are elements of the PEC classes and you will find the full classes on the PEC page of the web site if you are interested.
02_-_ducts_v13.pptx
File Size: 30607 kb
File Type: pptx
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02_-_terminal_unit_basics_v4.pptx
File Size: 55351 kb
File Type: pptx
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03_-_flow_and_pressure_measurement_v4.pptx
File Size: 55537 kb
File Type: pptx
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Pumps and Pumping System Supporting Information

edr_designbriefs_centrifugalpumps.pdf
File Size: 2142 kb
File Type: pdf
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pumpsystemtroubleshooting_final-073108.pdf
File Size: 1698 kb
File Type: pdf
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The two design briefs to the left are ones I reference a lot for basics on pumps.  I think you probably already reference them but just in case.   In addition, the slides from the PEC Pumps class, the Chilled and Condenser Water Systems class and the Steam and Hot Water Systems class all have some content in them that might be useful;  most of it would be in the Pumps class but there are case-study examples scattered through the other classes too.  The latest version of all of the slides will be found on the Pacific Energy Center Classes page.
y_as_powers_of_x_v3.xlsx
File Size: 104 kb
File Type: xlsx
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affinity_laws_speed_-_case_1_details_v2.pptx
File Size: 2499 kb
File Type: pptx
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affinity_laws_speed_-_case_1_v6.xlsx
File Size: 1316 kb
File Type: xlsx
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affinity_laws_speed_-_case_2_v6.xlsx
File Size: 1323 kb
File Type: xlsx
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The first spreadsheet looks at the technique a lot of people use for assessing savings by using a remote sensor based on research SCE did that developed different coefficients (less than 3) that you would apply to the pump power affinity law to project savings.   It is an accepted metric but what bothered me about it was that it projects 0 kW at 0 gpm and from field testing, we know that is not true when you deadhead a pump.   

​That means that you could use an approved metric to project savings and then not achieve it when they came to do the M&V because the approved metric would overstate savings at part load.  So, if your load profile has a lot of part load hours - and West Coast/PNW load profiles seem to - then you could be in trouble.  That is what cause me to come up with the technique in the PowerPoint presentation file.

The two spreadsheets below it are the calculations behind the graphs in the presentation;  Case 1 is controlling for remote DP and Case 2 is controlling for the header DP.


optimization_example.zip
File Size: 10292 kb
File Type: zip
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read_me_for_information_about_these_files.txt
File Size: 2 kb
File Type: txt
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The zipfile to the left has all the other files associated with applying the calculation technique I discuss above  to the chilled water plant in the model.  The READ ME file describes everything in the zip file.  But it kind of ties all of this stuff together by:
  • Looking at the savings projected by  my technique vs. the SCE exponent technique.
  • Looking at the cost benefit of a number of options.
One of the options involves adding a more efficient distribution pump because it turns out the existing pumps were best first cost but about 10% less efficient than the best life cycle cost pump.  What's kind of interesting is that doing trim and respond (basically the best possible savings you can get) with the existing pump saves as much or more energy than adding a more efficient pump but using a remote sensor to control it.  

That implies that if you added the new pump and did trim and respond with it, you would save the most energy.  But the control system would need to be able to support the network traffic required to do that.   In the model, the control system could support it.  So potentially, you would save the most energy by adding the pump and doing trim and respond and it would be a viable project for a long term Owner.   

But in terms of "bang for the buck", you could get almost as much savings by optimizing the existing pump with a trim and respond strategy, which would leave a pile of money that you could use for an additional ECM.  Of course that would change if the Owner was going to add a pump anyway for redundancy purposes. 

The table below is the summary for the example.
Picture
affinity_laws_v3.ppsx
File Size: 1659 kb
File Type: ppsx
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affinity_law_common_vs_seperate_circuit.ppt
File Size: 1580 kb
File Type: ppt
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The two presentations to the left are ones I use to explain why two pumps (or fans) - each rated for design flow, piped in parallel and serving a common distribution system - running at less than rated speed will not save energy compared to running one pump by itself.  The converse is also demonstrated by implication; i.e. why, for instance, two independent cooling tower cells running at 50% speed will use much less energy than one cell running at full speed.  I am on the verge of putting up a blog post that covers this.
tab_18.1_-_pump_ineractions_and_the_affinity_laws_v3.pptx
File Size: 13637 kb
File Type: pptx
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This is a set of slides I use at U of W DDC class that touches on some of the other topics.  But there is a case study regarding a large condenser water system where the interaction of the pumps causes operating problems and also provides energy savings opportunities if you added VFDs and controls, so that is why I included it.  You can feel free to use on your website and classes, but it but it would be best to import it into a different template to get rid of the U of W logo since folks pay to take that class.
 

Scope of Work Documents Example

These are the example documents mentioned in the Scope of Work presentation.  They are targeted at adding a new redundant evaporator pump to the Hijend Hotel central chilled water plant.  I have also included a version of the SketchUp model that shows what the installed pump would look like as well as the itemized take off behind the price for installing the pump to give you a sense of what goes into that.
evaporator_pump_addition_scope_of_work_v1.pdf
File Size: 61 kb
File Type: pdf
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evaporator_pump_addition_point_list_v1.pdf
File Size: 72 kb
File Type: pdf
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plant_v32_-_back-up_pumpsuv8.zip
File Size: 57152 kb
File Type: zip
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backup_evaporator_pump_system_diagram_v1.pdf
File Size: 91 kb
File Type: pdf
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evaporator_pump_addition_outline_operating_sequence_v1.pdf
File Size: 58 kb
File Type: pdf
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adding_an_evaporator_pump_v5.xlsx
File Size: 29 kb
File Type: xlsx
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Boiler Scope of Work Materials

These are the materials for the class today.
2021-01-27_scopes_of_work_v3.pptx
File Size: 22696 kb
File Type: pptx
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basis_of_design_boiler.zip
File Size: 15227 kb
File Type: zip
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part_1.zip
File Size: 7263 kb
File Type: zip
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proposed_substitution.zip
File Size: 9963 kb
File Type: zip
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