Commissioning Case Study: University of Iowa s Bowen Science Building HVAC Modernization Project Course Number: CXENERGY1630

Transcription

1 AABC Commissioning Group AIA Provider Number Commissioning Case Study: University of Iowa s Bowen Science Building HVAC Modernization Project Course Number: CXENERGY1630 John G. Bixler, PE, LEED AP Sebesta April 13, 2016

2 Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-aia members are available upon request. CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. This course is registered with AIA

3 SAMPLE OPTIONAL SLIDE Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited.

4 Course Description The presentation includes a case study of a project to modernize the mechanical systems of the University of Iowa s Bowen Science Building. It covers the advantages of a whole building testing approach prior to the design of a project, the challenges of transitioning all the identified deficiencies to contract documents, the role of the commissioning team, and lessons learned from the in-depth examination of a 40 year old lab building.

5 Learning Objectives At the end of the this course, participants will be able to: 1. Understand how the Commissioning Authority (CxA) can play a role in the design phase of Capital Renewal projects. 2. Understand the advantages of an approach focused on a whole building functionality baseline. 3. Understand the issue detection and resolution process used to manage more than 2000 issues. 4. Explore the value added to the Owner in taking unique approaches to the role of commissioning in an existing building.

6 Speaker Bio

7 Agenda Background info Project objectives Importance of terminal units Whole Building Functionality Baseline Challenges and strategies Advantages

8 Project Info University of Iowa

9 Project Info University of Iowa

10 Project Info University of Iowa Enrollment of 32,000 Budgeted revenue of $3.5 billion #1 Party School (Princeton Review)

11 Project Info University of Iowa

12 Project Info University of Iowa Carver College of Medicine 11 th Ranked National Public Institution (US News and World Report)

13 Project Info University of Iowa Carver College of Medicine Over 1,000 faculty members

14 Project Info University of Iowa Carver College of Medicine ~1,400,000 gsf in 11 buildings

15 Project Info University of Iowa Carver College of Medicine

16 Project Info General Information Constructed in ,000 sf Bowen Science Building Building function: research labs

17 Project Info General Information Constructed in ,000 sf Bowen Science Building Building function: research labs

18 Project Info Carver College of Medicine Bowen Science Building Energy Information Replaced building air handling units in Fume Hoods 2011 Energy cost = $3.3 million ($13.50/sf)

19 KBTU/SF Project Info Carver College of Medicine Bowen Science Building Average Lab Building (Lab21)= 355 KBTU/SF Fiscal Year

20 Project Info Carver College of Medicine Bowen Science Building $4,000,000 $3,500,000 $3,000,000 $2,500,000 $2,000,000 $1,500, Fiscal Year

21 Project Info Carver College of Medicine Bowen Science Building Lubrication Motor replacement Bearing replacement End of useful life Originally 114 fume fans, 20 general exhaust fans Maintenance Penthouses are open to core shafts Hazardous fume exhaust pushed thru existing ductwork Existing ductwork near fans in poor condition Positively pressurized ductwork 1 exhaust termin per fan Possibility of fum exhaust re-entrai Low plume height

22 Project Info Carver College of Medicine Bowen Science Building No ability to monitor No ability to optimize system for energy savings No ability to diagnose No ability to troubleshoot No controls General exhaust system is deficient Dynamic building conditions cannot be controlled Pressure control is critical to lab operation Poor pressure control

23 Project Info Bowen Science Building information

24 Project Process Bowen Science Building Modernization Study Findings: Building Energy Use: Twice the energy use of peer buildings

25 Project Process Bowen Science Building Modernization Study Findings: Exhaust systems: Beyond end of useful life No controls

26 Project Process Bowen Science Building Modernization Study Findings: Terminal Units: TAB units, of a wide variety of vintages, display an 80% failure rate

27 Project Info Bowen Science Building

28 Project Process Critical Importance of Terminal Units System Layout To general exhaust fan 100% OA from supply fan To fume exhaust fan

29 Project Info Carver College of Medicine Bowen Science Building How do you ensure all terminal units are fully functional at the end of a capital replacement project?

30 Project Info How do you ensure all terminal units are fully functional at the end of a capital replacement project? Publically bid project Fully occupied building Aggressive schedule

31 Project Process Whole Building Functionality Baseline Test em all!

32 Whole Building Functionality Baseline Whole Building Functionality Baseline Critical environments Facility Cost Index Maintenance intense Precision required

33 Whole Building Functionality Baseline Typical Project Timeline Study Design Construction Operations Cx

34 Whole Building Functionality Baseline Typical Project Timeline Study Whole Building Functionality Baseline Cx Design Construction Operations Cx

35 Whole Building Functionality Baseline Challenges: Timeline

36 Whole Building Functionality Baseline 6 Months 1,400 pieces of equipment Fully operational 375,000 sf research lab

37 Whole Building Functionality Baseline Team approach: Project Lead Team Lead Team Lead Controls guy Onsite support Onsite support

38 Whole Building Functionality Baseline Challenges: Communication

39 Whole Building Functionality Baseline VAV Terminal Unit Functional Performance Testing Flow measurements on VAV Terminal Unit and Hoods Space dimensions and As-builts Heat generating equipment inventory Issue Documentation Controls System Verification

40 Whole Building Functionality Baseline Communication VAV Terminal Unit Functional Performance Testing Flow measurements on VAV Terminal Unit and Hoods Space dimensions and As-builts Heat generating equipment inventory Issue Documentation Controls System Verification Engineer of Record

41 Whole Building Functionality Baseline Communication What: Data Issues How Much: A whole bunch!!

42 Whole Building Functionality Baseline Communication Cloud based, data management tool

43 Whole Building Functionality Baseline Communication Cloud based, data management tool

44 Whole Building Functionality Baseline Communication

45 Whole Building Functionality Baseline Communication Key points: Consistancy & Clarity

46 Whole Building Functionality Baseline Communication Consistency Templates Room Data Tests Issues Objective Information

47 Whole Building Functionality Baseline Communication Clarity Will someone who was not in the room when this information was authored, be able to fully understand the information, and evaluate root causes and potential solutions, 6 months from now?

48 Whole Building Functionality Baseline Communication Clarity Pictures!

49 Whole Building Functionality Baseline Communication Clarity Pictures! Cloud-based data management

50 Whole Building Functionality Baseline Communication Clarity Pictures! Tablet use

51 Whole Building Functionality Baseline Communication Clarity Pictures! Minimizes disruption

52 Whole Building Functionality Baseline Communication Clarity Early Feedback

53 Whole Building Functionality Baseline Communication Clarity Make the data manageable Repeated issues Real time data

54 Whole Building Functionality Baseline Communication Clarity Make the data manageable

55 Whole Building Functionality Baseline Communication

56 Whole Building Functionality Baseline Communication

57 Whole Building Functionality Baseline Advantages to CxA Increased involvement Additional Revenue Develop project specific knowledge Headstart on construction phase tasks

58 Whole Building Functionality Baseline Advantages to Owner Fewer surprises Precision + comprehensive knowledge Data driven approach Less disruption Reduced maintenance calls

59 Whole Building Functionality Baseline Advantages to Owner Control over budget and scope Prioritization Refined, precise design Forces true definition of scope

60 Whole Building Functionality Baseline Advantages to Owner Delivers a properly functioning building

61 This concludes The American Institute of Architects Continuing Education Systems Course John Bixler, PE Sebesta, Inc