Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort...
Transcript of Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort...
![Page 1: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/1.jpg)
Smart Labs:Building Next Generation Labs While Maintaining Safety and Comfort
JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEMSenior Energy Engineer
University of Minnesota
![Page 2: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/2.jpg)
AIA Quality Assurance
The Building Commissioning Association is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA members. Certificates of the Completion for both AIA members and non-AIA members are available upon request.
This program is registered with AIA/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.
BCxA Conference – Nashville, TN – October 2018 2
![Page 3: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/3.jpg)
Learning Objectives
1. Fundamentals of Smart Labs
2. Smart Labs Design Features
3. Lessons Learned
BCxA Conference – Nashville, TN – October 2018 3
![Page 4: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/4.jpg)
BCxA Conference – Nashville, TN – October 2018 4
Source https://italladdsup.umn.edu/
![Page 5: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/5.jpg)
BCxA Conference – Nashville, TN – October 2018 5
Assignable Space
LabsOther Space
Energy Expenses
LabsOther Space
![Page 6: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/6.jpg)
BCxA Conference – Nashville, TN – October 2018 6
What are Smart Labs?Research facilities designed to use
significantly less energy while maintaining occupant safety and
comfort
![Page 7: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/7.jpg)
BCxA Conference – Nashville, TN – October 2018 7
![Page 8: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/8.jpg)
BCxA Conference – Nashville, TN – October 2018 8
![Page 9: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/9.jpg)
Smart Lab Design Features:
BCxA Conference – Nashville, TN – October 2018 9
•High Efficiency Equipment
![Page 10: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/10.jpg)
High Efficiency Equipment
BCxA Conference – Nashville, TN – October 2018 10
Reduces loads in the space
• Stirling cycle ultra-low temp freezers• High efficiency lighting
![Page 11: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/11.jpg)
Smart Lab Design Features:
BCxA Conference – Nashville, TN – October 2018 11
•High Efficiency Equipment•Ventilation
![Page 12: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/12.jpg)
BCxA Conference – Nashville, TN – October 2018 12Source https://www.csmonitor.com/USA/Sports/2010/1212/Vikings-Metrodome-roof-collapses-for-the-fifth-time
![Page 13: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/13.jpg)
Ventilation
BCxA Conference – Nashville, TN – October 2018 13
VAV fume hoods and provisions for source capture exhaust connections
![Page 14: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/14.jpg)
How are we reacting to what’s going on in the labs?
BCxA Conference – Nashville, TN – October 2018 14
![Page 15: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/15.jpg)
Demand Control Ventilation
BCxA Conference – Nashville, TN – October 2018 15
Actively measures VOCs and particlesin every lab
![Page 16: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/16.jpg)
BCxA Conference – Nashville, TN – October 2018 16
Source https://en.wikipedia.org/wiki/Mad_scientist
![Page 17: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/17.jpg)
Smart Lab Design Features:
BCxA Conference – Nashville, TN – October 2018 17
•High Efficiency Equipment•Ventilation•Decoupling
![Page 18: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/18.jpg)
Decoupling
BCxA Conference – Nashville, TN – October 2018 18
• VAV FCUs• Active chilled beams
![Page 19: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/19.jpg)
BCxA Conference – Nashville, TN – October 2018 19
Source https://www.klimapont.hu/panasonic-pawfch150-magas-nyomasu-fancoilegysegek-3129
![Page 20: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/20.jpg)
BCxA Conference – Nashville, TN – October 2018 20
Source http://eichlervision.com/2010/10/touring-twa-panel-systems-manufacturing-facility-in-nisku-canada/
![Page 21: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/21.jpg)
BCxA Conference – Nashville, TN – October 2018 21
Source http://ac-systemsinc.com/product/dadanco-chilled-beams/
![Page 22: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/22.jpg)
Smart Lab Design Features:
BCxA Conference – Nashville, TN – October 2018 22
•High Efficiency Equipment•Ventilation•Decoupling
![Page 23: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/23.jpg)
What’s Next?
BCxA Conference – Nashville, TN – October 2018 23
How do we stay green through design, construction, and
occupancy?
![Page 24: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/24.jpg)
BCxA Conference – Nashville, TN – October 2018 24
OUR STORY BEGINS…
At the concept phase
![Page 25: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/25.jpg)
BCxA Conference – Nashville, TN – October 2018 25
We have a plan...
Design conceptsDO:ØMinimize loads (sensible, latent, ventilation)ØProvide only the required ventilation levelØMeet additional sensible loads with the most efficient
source (decoupling)
DO NOT:ØReheatØOperate equipment unless it serves a purpose
![Page 26: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/26.jpg)
BCxA Conference – Nashville, TN – October 2018 26
We have a plan...
Enabling Technologies
ØActive Chilled Beam (ACB)
ØFan Coil Units (FCU)
ØDemand Control Ventilation System
ØDedicated Outdoor Air Systems (DOAS)
ØPassive Radiant Components (e.g. Floors)
ØHeat Recovery Wheels
![Page 27: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/27.jpg)
BCxA Conference – Nashville, TN – October 2018 27
SIMPLE, RIGHT ?…
Recipe for SUSTAINABILITY:
Ø Take the last design for a similar building type
Ø Sprinkle on “green” tech to taste
Ø Stir well
Ø Issue CDs
![Page 28: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/28.jpg)
BCxA Conference – Nashville, TN – October 2018 28
NOT ALWAYS…
Poorly applied “green” technology
Poorly applied conventional technology
=
![Page 29: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/29.jpg)
BCxA Conference – Nashville, TN – October 2018 29
http://thechive.com/2016/01/25/driving-in-a-blizzard-heres-what-to-do-14-gifs/
What went wrong, the impact, and how to fix it
Examples of deficiencies:
• Design Assumptions• Active Chilled Beams• Fan Coil Units
![Page 30: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/30.jpg)
BCxA Conference – Nashville, TN – October 2018 30
Original design: 80%
fume hood use
Design Assumptions Example
Actual use: 30%
fume hood use
Source http://www.kewaunee.com/LaboratoryHoods/FumeHoods/SupremeAirVenturi/
![Page 31: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/31.jpg)
BCxA Conference – Nashville, TN – October 2018 31
Chilled Beam Example
• Ventilation design intent was for 2 ACH• ACB for lab sensible cooling• VAV FCUs for high load alcoves and
specialty spaces
![Page 32: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/32.jpg)
BCxA Conference – Nashville, TN – October 2018 32
Chilled Beam Example
However…The as-built performance was different.Instead of 2 ACH, most labs were operating at 4 ACH and reheating
What Went Wrong?
![Page 33: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/33.jpg)
DESIGN CONCEPTSDO:• Minimize loads (sensible,
latent, ventilation)• Provide only the required
ventilation level• Meet additional sensible
loads with the most efficient source (preferably hydronic)
DO NOT:• Reheat• Operate equipment unless it
serves a purpose
ENABLING TECHNOLOGIES• Active Chilled Beam (ACB)
• Fan Coil Units (FCU)• Fan Powered VAV (PFVAV)
• Dedicated Outdoor Air Systems (DOAS)
• Passive Radiant Components (e.g. Floors)
• Heat Recovery Wheels
BCxA Conference – Nashville, TN – October 2018 33
We “had” a plan
![Page 34: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/34.jpg)
BCxA Conference – Nashville, TN – October 2018 34
Why 4 ACH vs. 2 ACH?• Design Goal: operate as close to 2 ACH as
possible• The balancer and controls contractor did
their job per design drawings/specs
![Page 35: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/35.jpg)
BCxA Conference – Nashville, TN – October 2018 35
Why 4 ACH vs. 2 ACH?
Because…ACBs are constant volume devices.Once number/size selected, so is the airflow rate
!"#$ = #'() ∗ (!+/'()#'() = (-.)012 ÷ )012/'()
![Page 36: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/36.jpg)
BCxA Conference – Nashville, TN – October 2018 36
But…• At 4 ACH the system was reheating • ACBs only need to operate at design airflow when
cooling
![Page 37: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/37.jpg)
BCxA Conference – Nashville, TN – October 2018 37
But…• Induction ratio is 1:3 at 50% flow• The DDC system is programmable
![Page 38: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/38.jpg)
BCxA Conference – Nashville, TN – October 2018 38
Just a SMOP Later and…
![Page 39: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/39.jpg)
BCxA Conference – Nashville, TN – October 2018 39
![Page 40: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/40.jpg)
BCxA Conference – Nashville, TN – October 2018 40
FCU Example
• General exhaust in spaces with high sensible loads• FCUs used to supplement the sensible cooling capacity• Control FCU LAT and modulate the speed of an ECM
motor to control space temp
![Page 41: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/41.jpg)
BCxA Conference – Nashville, TN – October 2018 41
FCU Example
• FCUs arrived with 3 speeds, not variable speed• Medium speed was a bit short of design capacity• Controls contractor proposed changing the
sequence to cycle the fan on and off with load
What Went Wrong?
![Page 42: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/42.jpg)
DESIGN CONCEPTSDO:• Minimize loads (sensible,
latent, ventilation)• Provide only the required
ventilation level• Meet additional sensible
loads with the most efficient source (preferably hydronic)
DO NOT:• Reheat• Operate equipment unless it
serves a purpose
ENABLING TECHNOLOGIES• Active Chilled Beam (ACB)
• Fan Coil Units (FCU)• Fan Powered VAV (PFVAV)
• Dedicated Outdoor Air Systems (DOAS)
• Passive Radiant Components (e.g. Floors)
• Heat Recovery Wheels
BCxA Conference – Nashville, TN – October 2018 42
We “had” a plan
![Page 43: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/43.jpg)
BCxA Conference – Nashville, TN – October 2018 43
Sounded reasonable because…• FCU are installed in areas where high cooling loads are
assumed• With high loads the system will run all the time anyway• If it runs all the time anyway then changing speeds isn’t
that important• Besides, if the load is reduced the fan will turn off and
you can’t do better than off.
Right?
![Page 44: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/44.jpg)
BCxA Conference – Nashville, TN – October 2018 44
Yes, you can do better
• With a centrifugal fan, capacity and power are not linear
• FCU fan power follows a cube law very closely! ∝ $%&'(
• It will probably save energy to run at a lower speed
![Page 45: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/45.jpg)
BCxA Conference – Nashville, TN – October 2018 45
0
50
100
150
200
250
300
350
0 200 400 600 800 1000
Pow
er (W
atts
)
Flow
High Speed
Med Speed
![Page 46: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/46.jpg)
BCxA Conference – Nashville, TN – October 2018 46
• The analog output was installed, but not connected
• Install a staging relay to trigger the 3 fan speeds based on an analog signal
• Voilà, a VAV substitute of sorts.
It’s Not VAV, But It’ll Do
![Page 47: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/47.jpg)
BCxA Conference – Nashville, TN – October 2018 47
Example FCU
Modulating FCU fan speed saves 715 kWh/yr (about $70) and 2,442 kBtu/yr.
With 70 FCU in the facility, the extra cost approaches 2 kBtu/GSF/Yr, or around 1% of the total target.
HIGH SPEED OPERATION
Hours Watts kWH kBtuON 5930 250 1480 5052
OFF 2830 0 0 0
MEDIUM SPEED OPERATION
Hours Watts kWH kBtuON 7965 96 765 2610
OFF 795 0 0 0
![Page 48: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/48.jpg)
BCxA Conference – Nashville, TN – October 2018 48
Lessons (hopefully) Learned
• Be really careful with design assumptions• Smart Labs concepts work together to produce a
high performance building• Realistic load estimates are key• When it comes to sustainable design there is no
secret sauce. Existing technologies can deliver very high performance
![Page 49: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/49.jpg)
BCxA Conference – Nashville, TN – October 2018 49
![Page 50: Smart Labs - BCxA · Smart Labs: Building Next Generation Labs While Maintaining Safety and Comfort JAVIER NAVAR PAYAN, MSME, PE (MINNESOTA) , CEM Senior Energy Engineer University](https://reader034.fdocuments.us/reader034/viewer/2022042308/5ed4c951fd1f950b814dfbae/html5/thumbnails/50.jpg)
Javier Navar Payan MSME, PE(Minnesota), CEMSenior Energy [email protected] of Minnesota
BCxA Conference – Nashville, TN – October 2018 50