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

HVAC Resource Map

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www.HVACresourcemap.net

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• Jeff.G.Boldt@IMEGcorp.com

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• Jeff.G.Boldt@IMEGcorp.com• (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

michael.deru@nrel.gov303-384-7503