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

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

Pump Optimization Case Study (pump_optimization_case_study_v9.pdf)
File Size:	2158 kb
File Type:	pdf

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EBCx Functional Testing and Chilled Water Flywheel Case Study

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

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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

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

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Make Up Air System Optimization Case Study

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

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