better buildings alliance...speakers michael deru, national renewable energy lab michael ivanovich,...
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April 25, 201812-1 pm EDT
Better Buildings AllianceSpace Conditioning Team CallImproving Fan System Performance
Michael Deru, NREL
Agenda
Introductions and welcome BB Summit New Fan Guides Speakers:
Michael Ivanovich, AMCA International Jeff Boldt, IMEG Corp David Sellars, Facility Dynamics Engineering
Discussion
Please mute your phone when not speaking
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Speakers
Michael Deru, National Renewable Energy Lab
Michael Ivanovich, AMCA International
Jeff Boldt, IMEG Corp
David Sellars, Facility Dynamics Engineering3
Energy Exchange/Better Buildings Summit
Two Conferences for the Price of One!
https://betterbuildingssolutioncenter.energy.gov/summit
9 HVAC related sessions including … Cooling Tower Water Management Best Practices Automated Fault Detection and Diagnostics Keep RTUs Running
Efficiently4
Fan Guide #1: BB Fact Sheet
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What is it? 2-page quick reference on fan systems maintenanceWho is it for? Facility managersWhere can I get it? betterbuildingssolutioncenter.energy.gov
Fan Guide #2: NREL Fact Sheet
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What is it? 7-page reference on efficiency measures with proper maintenance and retrofits
Who is it for? Facility managers and Maintenance staff
Where can I get it? betterbuildingssolutioncenter.energy.gov
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Table 1 – Summary of O&M and RI Measures
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O&M Example
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Replacement/Improvement Example
Michael Ivanovich, AMCA
AMCA International Overview
AMCA International
AMCA International is a not-for-profit manufacturers association established in 1917
Global Headquarters is in Arlington Heights, Illinois More than 380 members in North America, Europe,
Asia, and Middle East AMCA Certified Rating System Standards and Publications White papers, conferences, seminars www.amca.org
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Air curtains Fans for
residential/commercial Fans for fire/smoke control Fans for industrial
processes
Fans for power-plants Fire & smoke dampers Fixed and adjustable
louvers …and more
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AMCA Scope of Products
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18 ANSI-Accredited Testing & Rating Standards
Plus: Application Guides White Papers Videos Magazine Social Media
Standards & Publications
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Publications include: Publications supporting AMCA Certified Ratings
Program (free) 11-series (11, 211, 311 for fans) Application manuals and design guides
Fire and smoke dampers Commercial HVAC Airflow Measurement Stations Air Curtains Louvers Troubleshooting Industrial fans
Standards & Publications
AMCA Value Chain
AMCA Test Standards
AMCA Testing.AMCA Lab AccreditationAMCA Independent Labs
AMCA Certified Ratings
Engineers Specify AMCA
Worldwide engineering seminars &
conferences
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AMCA White Paper Library www.amca.org/whitepapers
AMCA Research Papers and Technical Articles www.amca.org/resources
AMCA ASET Conference PowerPoint Presentations www.amca.org/resources
Search for AMCA Certified Products www.amca.org/certified
AMCA Publications and Standards www.amca.org/store
AMCA Resources for Engineers
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New: AMCA App for Mobile Devices
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Provides Guide Spec Language for AMCA-Certified Proudcts
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AMCA App: Example for Axial Fans
Guide spec text can be copy/pasted to email or message
Referenced publications can be added to file cart
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…there might be a lot of referenced documents…
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AMCA App: Quick Links
White papers downloaded directly from AMCA Website
Jeff Boldt, IMEG Corp
Basics of Good Fan Design and Operation
Basics of Good Fan Design and Operation
Jeff Boldt, PE, FASHRAE, LEED® AP, HBDPPrincipal – IMEG Corp• Member ASHRAE SSPC-90.1
– Chair Hydronics & Elevator Working Groups• Member ASHRAE SSPC-189.1
– Chair Acoustics Discussion Group
• Author Advanced Energy Design Guide for Large Hospitals and AEDG for Small Healthcare Facilities
• Member 90.1-170 Working Group– Member filtration working group
• Member Guideline 36 – Advanced Control Sequences• Member SSPC-215P – Operating System Duct Leakage • PE - M and FP• [email protected]
Search for“ASHRAE Seminar Recordings”
or “Jeff Boldt Nerd”
Learning Objectives
•Understand pros and cons of different fan types•Understand the Fan Power Requirements of 90.1 •Good and Bad fan system designs
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Considerations
•Performance & Stability•Energy
–Code compliance• 90.1• IECC• Title 24
•Noise•Space•Cost•Reliability
Fan Types
•FC (forward curved)•BI (backward inclined)
–Radial•BIAF (BI airfoil)•Plug (rare in HVAC)•Plenum
•Propeller•Tube Axial•Vane Axial
Fan Types – Axial: Propeller
•Properties–Low Pressure–Low Cost
•Applications–Low Pressure without Ductwork–High Air Volume–Circulation–Through Wall–Ceiling
Fan Types – Axial: Tube Axial
•Properties–Fixed or adjustable blades–Straight Through Air Flow–Low-High Pressure HVAC Air
Movement–Compact Design–Industrial–Loud
Vane Axial
•Properties–Good Efficiencies–Medium-High Pressure–Fixed or Adjustable Blades–Hub ~50% of Tip Diameter
•Applications–Straight Through Air Flow–Compact–Industrial–Noisy
Centrifugal: Radial
•Properties–Low Efficiency–Rugged - Industrial–High Pressure–Flat Blade
•Applications–High Pressure Air Movement–Material Handling (Dust
Collection)–Industrial
Centrifugal: Forward Curved (FC)
•Properties–Higher Efficiency than Radial–Low Cost–Light Weight and Smallest–Slower Speed
•Applications–Low Pressure HVAC–Low Cost Applications–Residential Furnaces–RTUs
Centrifugal: Backward Inclined (BI)
•Properties–Higher Efficiency than
Forward Curved–Single Thickness Blades–Fewer, Deeper Blades
•Applications–HVAC Air Movement–Commercial–Industrial–Housed and Plenum
Centrifugal: Backward Inclined Airfoil (BIAF)
•Properties–High Efficiency–Deep Airplane Wing Design–High Speed
•Applications–Large Volume HVAC–High Pressure HVAC–Clean Air Industrial–Housed and Plenum
Mixed Flow
•More efficient than inline centrifugal
What’s Required by 90.1?
Table 6.5.3.1-2 Fan Power Limitation Pressure Drop Adjustment Device A - 2016
2016Δ
2010>>2010Δ
2013Δ2007-1”
2016““
BIAF vs. Plenum
Vibration Isolation
SWSI vs. DWDI
•Single Width – Single Inlet–Ducted inlet–Often overhung bearings
•Double Width – Double Inlet–Non-ducted inlet–No overhung bearings
Generic Fan Comparisons
3-Phase Motor Performance – Very Different for Single-Phase!
Fan Inlets
•Good
•Bad
Fan Outlets
•Good
•Bad
Poor RTU Inlet
It’s Not Always the Fan’s Fault!
Basics of Good Fan Design and Operation
Jeff Boldt, PE, FASHRAE, LEED® AP, HBDP• [email protected]• (608) 658-5750
• References– ASHRAE Systems and Equipment
2016, Chapter 21– Tim Mathson – Greenheck– Michael Ivanovich – AMCA– Loren Cook
David Sellars, Facility Dynamics Engineering
Lessons Learned from Commissioning Fan Systems
Live walk through of a building HVAC system
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https://av8rdas.wordpress.com/
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Search for System Effect
http://www.av8rdas.com/
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http://www.av8rdas.com/
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Select SketchUp Models
Open Discussion
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Questions or commentsNew challengesNew project resultsTopics for next call