Shopping Cart

No products in the cart.

ASHRAE IAQBestPractices 2ndEdition 2014

$49.40

Indoor Air Quality Guide: Best Practices for Design, Construction and Commissioning, 2nd Edition

Published By Publication Date Number of Pages
ASHRAE 2014 718
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

The Indoor Air Quality Guide: Best Practices for Design, Construction and Commissioning is designed for architects, design engineers, contractors, commissioning agents, and all other professionals concerned with indoor air quality. Developed in cooperation with the American Institute of Architects, U.S. Green Building Council (USGBC), the Building Owners and Managers Association International (BOMA), the Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA), and the U.S. Environmental Protection Agency (EPA).

PDF Catalog

PDF Pages PDF Title
6 CONTENTS
9 Acknowledgments
11 Abbreviations and Acronyms
13 Foreword: Why this Guide Was Written
14 Message to Building Owners
15 Introduction
22 PART I—Summary Guidance
Overview Information for Design, Construction, and Commissioning for IAQ
23 Objective 1 – Manage the Design and Construction Process to Achieve Good IAQ
25 Strategy 1.1 – Integrate Design Approach and Solutions
29 Strategy 1.2 – Commission to Ensure that the Owner’s IAQ Requirements are Met
33 Strategy 1.3 – Select HVAC Systems to Improve IAQ and Reduce the Energy Impacts of Ventilation
37 Strategy 1.4 – Employ Project Scheduling and Manage Construction Activities to Facilitate Good IAQ
40 Strategy 1.5 – Facilitate Effective Operation and Maintenance for IAQ
44 Objective 2 – Control Moisture in Building Assemblies
46 Strategy 2.1 – Limit Penetration of Liquid Water into the Building Envelope
50 Strategy 2.2 – Limit Condensation of Water Vapor within the Building Envelope and on Interior Surfaces
54 Strategy 2.3 – Maintain Proper Building Pressurization
58 Strategy 2.4 – Control Indoor Humidity
64 Strategy 2.5 – Select Suitable Materials, Equipment, and Assemblies for Unavoidably Wet Areas
67 Strategy 2.6 – Consider Impacts of Landscaping and Indoor Plants on Moisture and Contaminant Levels
70 Objective 3 – Limit Entry of Outdoor Contaminants
72 Strategy 3.1 – Investigate Regional and Local Outdoor Air Quality
76 Strategy 3.2 – Locate Outdoor Air Intakes to Minimize Introduction of Contaminants
79 Strategy 3.3 – Control Entry of Radon
83 Strategy 3.4 – Control Intrusion of Vapors from Subsurface Contaminants
89 Strategy 3.5 – Provide Effective Track-Off Systems at Entrances
92 Strategy 3.6 – Design and Build to Exclude Pests
96 Objective 4 – Control Moisture and Contaminants Related to Mechanical Systems
98 Strategy 4.1 – Control Moisture and Dirt in Air-Handling Systems
101 Strategy 4.2 – Control Moisture Associated with Piping, Plumbing Fixtures, and Ductwork
103 Strategy 4.3 – Facilitate Access to HVAC Systems for Inspection, Cleaning, and Maintenance
106 Strategy 4.4 – Control Legionella in Water Systems addresses the control of Legionella
108 Strategy 4.5 – Consider Ultraviolet Germicidal Irradiation discusses the state of knowledge regarding UVGI
111 Objective 5 – Limit Contaminants from Indoor Sources
113 Strategy 5.1 – Control Indoor Contaminant Sources through Appropriate Material Selection
118 Strategy 5.2 – Employ Strategies to Limit the Impact of Emissions
122 Strategy 5.3 – Minimize IAQ Impacts Associated with Cleaning and Maintenance
125 Objective 6 – Capture and Exhaust Contaminants from Building Equipment and Activities
127 Strategy 6.1 – Properly Vent Combustion Equipment
129 Strategy 6.2 – Provide Local Capture and Exhaust for Point Sources of Contaminants
132 Strategy 6.3 – Design Exhaust Systems to Prevent Leakage of Exhaust Air into Occupied Spaces or Air Distribution Systems
135 Strategy 6.4 – Maintain Proper Pressure Relationships Between Spaces
138 Objective 7 – Reduce Contaminant Concentrations through Ventilation, Filtration, and Air Cleaning
140 Strategy 7.1 – Provide Appropriate Outdoor Air Quantities for Each Room or Zone
143 Strategy 7.2 – Continuously Monitor and Control Outdoor Air Delivery
147 Strategy 7.3 – Effectively Distribute Ventilation Air to the Breathing Zone
150 Strategy 7.4 – Effectively Distribute Ventilation Air to Multiple Spaces
152 Strategy 7.5 – Provide Particle Filtration and Gas-Phase Air Cleaning Consistent with Project IAQ Objectives
156 Strategy 7.6 – Provide Comfort Conditions that Enhance Occupant Satisfaction
159 Objective 8 – Apply More Advanced Ventilation Approaches
161 Strategy 8.1 – Use Dedicated Outdoor Air Systems Where Appropriate
165 Strategy 8.2 – Use Energy Recovery Ventilation Where Appropriate
167 Strategy 8.3 – Use Demand-Controlled Ventilation Where Appropriate
171 Strategy 8.4 – Use Natural or Mixed-Mode Ventilation Where Appropriate
175 Strategy 8.5 – Use the ASHRAE Standard 62.1 IAQ Procedure Where Appropriate
179 Part I References and Bibliography
182 PART II—Detailed Guidance
Detailed Information for Design, Construction, and Commissioning for IAQ
183 Objective 1 – Manage the Design and Construction Process to Achieve Good IAQ
Strategy 1.1 – Integrate Design Approach and Solutions
Introduction
184 Current Trends call for Integrated Design
185 Indoor Environmental Quality is Best Served by Integrated Design
Examples of Integrated Design Solutions
Integration of Envelope, Illumination, and Mechanical Design
186 Integration of Interior Architecture with Illumination, Air Quality, and Thermal Control Strategies
Use of Hybrid Ventilation, Occupant Control, and Daylight
187 Leadership and Communication with Integrated Design
188 The Importance of the Conceptual Design Phase
Laying the Groundwork for an Interactive Process
IAQ Considerations During Conceptual Design
190 IAQ Throughout the Design and Construction Phases
191 References
192 Strategy 1.2 – Commission to Ensure that the Owner’s IAQ Requirements are Met
Introduction
193 Pre-Design Phase Commissioning
Commissioning Team: Specialists Needed for IAQ Items
194 Owner’s Project Requirements for IAQ
197 Commissioning Scope and Budget Related to IAQ
199 Special Project Schedule Needs for IAQ
Design Phase Commissioning
IAQ Basis of Design (BoD)
201 Design Review for IAQ
202 Construction Process Requirements
Construction Checklists for IAQ
204 Construction Phase Commissioning
206 Coordination for IAQ
Review of Submittals for IAQ
207 Construction Observation/Verification for IAQ
Functional Testing for IAQ
208 Systems Manual and O&M Training for IAQ
Occupancy and Operations
212 References
214 Strategy 1.3 – Select HVAC Systems to Improve IAQ and Reduce the Energy Impacts of Ventilation
Introduction
HVAC System IAQ Design Principles
Integrated Design Considerations
215 Energy Conservation and Environmental Considerations
216 Mixed-Mode Ventilation
Displacement Ventilation Systems
Thermal Comfort Considerations
217 User-Owner IEQ/IAQ Expectations
Regional/Local and Project-Specific IAQ Issues
Building Pressurization Control
219 Space Humidity Control
220 Particle Filtration Control
221 HVAC System Options and General IAQ Requirements
Constant Volume (CV) with or without Reheat
223 Variable-Air-Volume (VAV) with Reheat
224 Dual Duct Dual Fan (DDDF) Systems
226 Multi-Zone Systems
227 Fan-Coil (FC) Systems
228 Fan-Powered Box (FPB) Systems
231 Self-Contained Air-Conditioning Systems
232 HVAC System Selection Procedure
Integrated Design Choice Mechanism
HVAC System Comparison Analysis
235 References and Bibliography
237 Strategy 1.4 – Employ Project Scheduling and Manage Construction Activities to Facilitate Good IAQ
Introduction
Building Conception
Early Planning and Organization
238 Project Incentives/Goals
Design Development
Construction Products/Materials Selection
Equipment Access and Installation Logistics
239 Phasing of Projects
Construction Documents
IAQ Schedule Requirements
240 Construction
Sequencing of Construction Activities
Schedule Compression
241 Operation of Permanent HVAC Equipment During Construction
Inspection Access
Post Construction
Building Flush-Out
242 Retrofits and Remodels
243 References
244 Strategy 1.5 – Facilitate Effective Operation and Maintenance for IAQ
Introduction
Considering O&M Capabilities in System Selection
249 Involving O&M Staff in Planning, Design, Construction, and Commissioning
250 Providing O&M Documentation that Facilitates Delivery of the Design Intent
251 Owner’s Project Requirements and Basis of Design
256 Record Documents
Commissioning Report
257 Operations Manual
259 Training Manual
Maintenance Manual
261 Format of O&M Documentation
262 Providing O&M Training to Support Delivery of the Design Intent
263 Prioritizing O&M for IAQ
267 References and Bibliography
269 Objective 2 – Control Moisture in Building Assemblies
Strategy 2.1 – Limit Penetration of Liquid Water into the Building Envelope
Introduction
Sources of Water Penetration
270 Design Features to Prevent Water Penetration
Site Drainage
272 Foundation Design
276 Wall Design
277 Roof and Ceiling Assembly Design
281 Ice Dams
282 Construction
Verification
Pen Test
Pen Test Example: Rainwater Protection Continuity
284 References and Bibliography
285 Strategy 2.2 – Limit Condensation of Water Vapor within the Building Envelope and on Interior Surfaces
Introduction
Designing for Airtightness
Air Barrier Design Requirements
286 Air Pressures that Cause Infiltration and Exfiltration
Wind Pressure
287 Stack Pressure
HVAC Fan Pressure
288 Air Barrier Systems
Continuity
289 Structural Support
Air Impermeability
290 Durability

Air Barrier System Requirements
293 Air Barrier Materials
294 Air Barriers Subject to Temperature Changes
Roof Air Barriers
296 Controlling Convection in Enclosure Assemblies
299 Controlling Condensation due to Diffusion
Recommendations for Building Enclosures
301 References and Bibliography
303 Strategy 2.3 – Maintain Proper Building Pressurization
Introduction
Design Considerations
Climatological Requirements
Regional and Local Outdoor Air Quality Requirements
304 Approach to Building Usage and Layout
Building Orientation and Wind Load
305 Stack Effect
307 Building Envelope
Planned Openings
308 Unplanned Openings
HVAC System
Airflow Considerations
309 HVAC System Dehumidification Capacity
310 Building Static Pressure Monitoring and Control Strategies
312 Economizer Considerations
314 Constant-Volume Exhaust Fan Considerations
315 Variable-Air-Volume (VAV) System Considerations
Return Air Plenums
Duct Leakage
316 Airflow Measurement
318 Verification of Pressurization Control
320 References
321 Strategy 2.4 – Control Indoor Humidity
Introduction
Principles of Indoor Condensation
322 What can go wrong?
325 Integrated Design Process
Indoor Conditions, Loads, and Special System Capabilities
329 System Design Tips
Dedicated Outdoor Air Systems (DOAs)
Hot Gas Reheat
330 Variable-Air Volume (VAV)
Small Packaged Systems
332 Special Spaces
Dedicated Dehumidification Systems
333 Humidification
Humidification Using Energy Recovery Ventilation
334 Type of Humidification System
Location of Humidifier
335 Humidity Levels
Maintenance Specification
Monitoring Humidity and Automatic Control
336 References
337 Strategy 2.5 – Select Suitable Materials, Equipment, and Assemblies for Unavoidably Wet Areas
Introduction
Indoor Areas Subject to Repeated Wetting
Problems Associated with Wet Materials
338 Materials Susceptible to Moisture Damage
Selection of Moisture-Resistant Materials
344 References and Bibliography
345 Strategy 2.6 – Consider Impact of Landscaping and Indoor Plants on Moisture and Contaminant Levels
Introduction
Outdoor Plantings
Green Roofs
347 Green Facades and Vertical Gardens
348 Indoor Plantings
Potted Plants
349 Moisture Content, Water Activity, and Dampness
352 References
354 Objective 3 – Limit Entry of Outdoor Contaminants
Strategy 3.1 – Investigate Regional and Local Outdoor Air Quality
Introduction
Assessment
Determine Compliance with NAAQS
Determine Whether Local Sources are Present
NAAQS Particles
Particulate Matter — PM10
355 Particulate Matter — PM2.5
Lead
NAAQS Gases
Ozone
356 Nitrogen Dioxide (NO2)
Sulfur Dioxide (SO2)
357 Carbon Monoxide (CO)
358 Other Pollutants
Dust
Volatile Organic Compounds (VOCs)
Odors
359 References
360 Strategy 3.2 – Locate Outdoor Air Intakes to Minimize Introduction of Contaminants
Introduction
Applicable Codes, Standards, and Other Guidance
364 Exhaust Vents
365 Cooling Towers, Evaporative Condensors, and Fluid Coolers
366 Laboratory Fume Hood and Exhaust Stacks
Other Sources of Contamination
Plumbing Vents
367 Wind Tunnel Modeling, Computer Simulations, and Computational Fluid Dynamics (CFD)
Special Considerations for Packaged HVAC Units
371 References
373 Strategy 3.3 – Control Entry of Radon
Introduction
Why Radon Control is Important
Sources of Radon
Action Levels and Available Radon Measurements from U.S. Buildings
374 Assessment
Regional Radon Potential
375 Local Radon Potential
Other Considerations
377 Controlling Radon Entry
Active Soil Depressurization (ASD)
381 Sealing of Radon Entry Routes
384 Building Pressurization
385 Quality Assurance of Radon Control Measures
Quality Assurance Steps
O&M Documentation and Training for Radon Control Systems
388 References and Bibliography
391 Strategy 3.4 – Control Intrusion of Vapors from Subsurface Contaminants
Introduction
392 Screening and Assessment
Federal Guidance
393 State Guidance
ASTM E2600-08: A National Standard for Assessment of Vapor Intrusion in Real Estate Transactions
394 ASTM Tier 1 Screeningt
398 ASTM Tier 2 Screening
399 ASTM Tier 3 Assessment
400 Site Remediation and Institutional Controls
Site Remediation
401 Institutional Controls
Building Mitigation
Relationship to Radon Mitigation Techniques
Advantages of Mitigation as Part of Initial Design and Construction
Regulatory Requirements
402 Interstate Technology & Regulatory Council (ITRC) Guidance
405 Active Soil Depressurization (ASD)
406 Sealing of Vapor Intrusion Routes
Gas Vapor Barriers
408 Passive Venting
409 Building Pressurization
411 Other Approaches
412 Effect of Chemicals of Concern on Mitigation System Design
Quality Assurance of Vapor Intrusion Mitigation Systems
413 Operation, Maintenance, and Monitoring of Mitigation Systems
Synergies and Conflicts
414 References and Bibliography
417 Strategy 3.5 – Provide Track-Off Systems at Entrances
Introduction
Contaminants Tracked into Buildings by Occupants
Landscaping and Building Approaches
418 Track-Off Systems
Scraper Mats
Absorption Mats
Finishing Mats
419 Maintenance
420 References
421 Strategy 3.6 – Design and Build to Exclude Pests
Introduction
Pest Prevention Goals and Objectives
Pests of Concern
423 Pest Entry Points
425 Pest Dispersal Throughout Building
427 Pest Access to Food and Water Resources
428 Areas of Potential Pest Harborage
431 Access for Maintenance and Pest Control Activities
Appropriate Materials Selection for Sealing
434 Supplemental Pesticide Use
436 Construction Site Management
437 References
438 Objective 4 – Control Moisture and Contaminants Related to Mechanical Systems
Strategy 4.1 – Control Moisture and Dirt in Air-Handling Systems
Introduction
439 Outdoor Air Intakes and Air Inlet Areaways
Filters and Microbial Growth in HVAC Equipment
Water Accumulation in HVAC Drain Pans
440 Moisture Carryover from Cooling Coils
Smooth and Cleanable Surfaces
442 Duct Liner
Impact of Humidifier Moisture on Airstream Surfaces
445 References
446 Strategy 4.2 – Control Moisture Associated with Piping, Plumbing Fixtures, and Ductwork
Introduction
Limiting Condensation
Limiting Leaks
447 Providing a Plumbing System O&M Guide
References
448 Strategy 4.3 – Facilitate Access to HVAC Systems for Inspection, Cleaning, and Maintenance
Introduction
Access in Design Documents
Locations that Facilitate Access
449 Minimum Clearance Distances
Critical AHU Components
450 Air Distribution System
System Balancing and Monitoring Access
451 Terminal Equipment
Electrical Code Access Criteria
452 Access Door/Panel/View Port Requirements
453 Access During Construction
Coordination with Trades
Review of Submittals
Field Changes
454 Monitoring Installations
Unanticipated Access Requirements
Compliance with SMACNA HVAC Duct Construction Standards
455 Repeated Access
References
456 Strategy 4.4 – Control Legionella in Water Systems
Introduction
457 Control of Legionella in Cooling Towers
Proper Siting (Building Siting, Mists, Building Openings)
Operation and Maintenance
458 Control of Legionella in Water Systems
Storage Temperatures in Hot Water Tanks
Design Considerations for Potable Water Systems

Legionella in Other Water Systems
Emergency Disinfection of Water Systems
459 Environmental Monitoring for Culturable Legionella
461 References and Bibliography
462 Strategy 4.5 – Consider Ultraviolet Germicidal Irradiation
Introduction
463 UVGI in HVAC Systems
UVGI and IAQ
464 Safety with UVGI
466 References
468 Objective 5 – Limit Contaminants from Indoor Sources
Strategy 5.1 – Control Indoor Contaminant Sources through Appropriate Material Selection
Introduction
Contaminant Emissions: Basic Concepts
470 VOCs—Total vs. Target: Irritancy, Odor, and Health Impact
471 Semi-Volatile Organic Compounds (SVOCs)
472 Indoor Chemistry – Secondary Emissions
473 IAQ Guidelines, Standards and Specifications
475 Shades of Green – Environmentally Preferred Products
478 Product Information – Composition vs Emissions

Emissions Behavior
480 Emissions Data: Available Information
Manufacturer-Supplied Information: MSDSs
481 Labels: Content-Based
483 Labels: Emissions-Based
488 Emissions Databases
490 Priority Materials/Finishes/Furnishings
Architectural Coatings
492 Flooring Materials
496 Composite Wood / Agrifiber Materials
499 Caulks, Sealants & Adhesives
500 Ceiling Tiles

PVC Materials
501 Insulation Materials
502 Porous or Fleecy Materials
Flame-Retardant materials
503 Structural Materials
HVAC components
504 Office Furniture Systems
506 Office Equipment
509 References
520 Strategy 5.2 – Employ Strategies to Limit the Impact of Emissions
Introduction
Control of Emissions through Use of VOC Barriers
521 Material Conditioning and In-Place Curing
522 Local Exhaust of Unavoidable Sources
523 Staged Entry of Materials
Delayed Occupancy
Reasons to Avoid Use of Building Bake-Out
524 Building Flush-Out
525 Ventilation Rates and HVAC Schedules
Indoor Environmental Conditions
Filtration and Air Cleaning
526 References
527 Strategy 5.3 – Minimize IAQ Impacts Associated with Cleaning and Maintenance
Introduction
Selecting Durable Materials and Finishes that are Simple to Clean and Maintain
528 Recommending Cleaning Products with Minimal Emissions
531 Providing Appropriate Storage for Cleaning Products
Recommending Cleaning Protocols that will have Minimal IAQ Impact
533 References
535 Objective 6 – Capture and Exhaust Contaminants from Building Equipment and Activities
Strategy 6.1 – Properly Vent Combustion Equipment
Introduction
Capture and Exhaust of Combustion Products

Chimneys (Nonmechanical, Natural Exhaust)
536 Induced Draft (Powered, Negative-Pressure Exhaust)
Forced Draft (Powered, Positive-Pressure Exhaust)
Design and Installation

Outdoor Air for Combustion
537 Proper Operation and Maintenance of Equipment
Commissioning
538 References
539 Strategy 6.2 – Provide Local Capture and Exhaust for Point Sources of Contaminants
Introduction
Capturing Contaminants as Close to the Source as Possible and Exhausting Directly to the Outdoors
540 Maintaining Area in which Contaminants are Generated at a Negative Pressure Relative to Surrounding Spaces
542 Enclosing Areas where Contaminants are Generated
543 References
544 Strategy 6.3 – Design Exhaust Systems to Prevent Leakage of Exhaust Air into Occupied Spaces or Air Distribution Systems
Introduction
Effectively Sealing Ductwork to Limit Potential for Duct Leakage
546 Providing a Proper Outdoor Discharge Position and Configuration
548 Maintaining Exhaust Ducts in Plenum Spaces under Negative Pressure
549 References
550 Strategy 6.4 – Maintain Proper Pressure Relationships Between Spaces
Introduction
Space Usage
Common Space Types
551 Space Layout
Space Envelope
553 Compartmentalization
HVAC System
Airflow Rate Considerations

Airflow Monitoring and Control
555 Return Air Plenums
Duct Leakage
Airflow Measurement
556 Verification
References
557 Objective 7 – Reduce Contaminant Concentrations through Ventilation, Filtration, and Air Cleaning
Strategy 7.1 – Provide Appropriate Outdoor Air Quantities for Each Room or Zone
Introduction
Basic Theory
558 From Theory to Reality
People-Related and Space-Related Ventilation Requirements
Calculating Minimum Ventilation Rates for Each Zone Using the Ventilation Rate Procedure in ASHRAE Standard 62.1-2007
559 Occupancy Category
560 Boundaries for Zones and Corresponding Areas
Adjusting Outdoor Airflow Rates
Considering Increased Outdoor Airflow Rates when Outdoor Air Quality is Good
Temporarily Decreasing Outdoor Airflow Rates

Advanced Ventilation Design
562 References
563 Strategy 7.2 – Continuously Monitor and Control Outdoor Air Delivery
Introduction
Direct Measurement of Airflow
Straight Ducts
564 HVAC Systems with Economizers
565 Small Packaged HVAC Systems
Placement of Airflow Sensors
566 Accuracy and Calibration of Airflow Sensors
568 Indirect Methods of Measuring Minimum Outdoor Airs
Plenum Pressure Control
569 The CO2 or Temperature Method
Design Issues for Commissioning , Operation, and Maintenance
571 References
572 Strategy 7.3 – Effectively Distribute Ventilation Air to the Breathing Zone
Introduction
Zone Air Distribution Effectiveness
The Effect of Ducted Systems on Air Delivery
574 Ducted
Non-Ducted
References
575 Strategy 7.4 – Effectively Distribute Ventilation Air to Multiple Spaces
Introduction
Constant Volume (CV)
576 Variable-Air-Volume (VAV)
Secondary Recirculation
578 Parallel Fan-Powered Box

Series Fan-Powered Box
579 Ducted vs. Plenum Return

Transfer Fan
Other Systems (Less Commonly Used)
Changeover Bypass VAV
Dual Fan Dual Duct
580 Induction Unit
References
581 Strategy 7.5 – Provide Particle Filtration and Gas-Phase Air Cleaning Consistent with Project IAQ Objectives
Introduction
FAC Equipment Selection and Specification Guidance
583 Selection Guidance: Particulate Filters
586 Selection Guidance: Gas-Phase Air Cleaners
588 Air Capture and Seal
590 FAC System Location
Using the IAQ Procedure
592 Design Process Protocol
Performance Evaluation and Considerations of FAC Alternatives
Particulate Filter Efficiency Evaluation—MERV
595 Gas-Phase Air Cleaner Efficiency Evaluation
596 Maximizing the Value and Performance of FAC
Life-Cycle Analysis
598 How to Maximize the Life Cycle and Performance of FAC
601 Energetic Filters
603 References
604 Strategy 7.6 – Provide Comfort Conditions that Enhance Occupant Satisfaction
Introduction
Basic Thermal Comfort
Zoning and Occupant Control
605 Part-Load Humidity and Velocity Control
Operational Strategy and Design Implicationsy
606 Thermal Radiation
Air Movement
611 References and Bibliography
612 Objective 8 – Apply More Advanced Ventilation Approaches
Strategy 8.1 – Use Dedicated Outdoor Air Systems Where Appropriate
Introduction
Characteristics of DOASs
100% Outdoor Air
Latent Load Capability
Energy Recovery
Components of DOASs
Cooling Coils
613 Total (Enthalpy) Energy Recovery
Sensible Energy Recovery
Passive Dehumidification Component (PDHC)
Active Desiccant Wheel
614 Air Distribution
DOAS Combinations
Enthalpy Energy Recovery + Cooling Coil
Enthalpy Energy Recovery + Cooling Coil + Passive Dehumidification Component
Other DOAS Combinations
615 References and Bibliography
616 Strategy 8.2 – Use Energy Recovery Ventilation Where Appropriate
Introduction
Types of Air-to-Air Energy Recovery Devices
Energy Recovery Wheel
617 Fixed Plate with Latent Transfer
Fixed Plate
Heat Pipe
Runaround Loops
General Design Considerations
Appropriate Filtration
Controls
618 Sizing of Equipment
Condensation
Fouling and Corrosion
Sensible Heat Ratio
620 References and Bibliography
621 Strategy 8.3 – Use Demand-Controlled Ventilation Where Appropriate
Introduction
DCV Applications
DCV Systems
Design Considerations
623 CO2-Based DCV
624 Design and Other Considerations
627 Code and Green Building Requirements for CO2-Based DCV
Non-CO2-Based DCV
628 DCV in Multiple-Zone Systems
629 References
631 Strategy 8.4 – Use Natural or Mixed-Mode Ventilation Where Appropriate
Introduction
Natural/ Mixed-Mode/Hybrid Ventilation System
Design Principles
633 Comfort Expectations
Integrated Design
634 Applications for Natural Ventilation Cooling
635 Appropriate Climatic Conditions
Appropriate Building Programming
639 Mixed-Mode Ventilation
Contingency Mixed-Mode
Zoned Mixed-Mode
Changeover Mixed-Mode
Concurrent Mixed-Mode
Control of Ventilation
640 Automatic Integrated Control for Windows/Vents
Complimentary Design Techniques
644 Design Tools and Calculations
645 Manual Calculations
646 Computerized Explicit Envelope Flow Models
Cost-Benefit Analysis
Capital Costs
650 References
651 Strategy 8.5 – Use the ASHRAE Standard 62.1 IAQ Procedure Where Appropriate
Introduction
History of the IAQP
652 When to Use the IAQP
653 Applying the IAQP
Mass Balance
654 Successful Buildings
Contaminant Air Monitoring or Testing
655 Combination with VRP
656 Process for Applying the IAQP
IAQP Design Process Flowchart
Selection of Contaminants of Concern (CoC)
659 Documentation
References
660 Appendix A – Environmental Monitoring (Strategy 1.2)
666 Appendix B – Understanding Vapor Barriers (Strategy 2.2)
677 Appendix C – Dehumidification in Virginia (Strategy 2.4)
681 Appendix D – Separation of Exhaust Outlets and Outdoor Air Intakes (Strategy 3.2)
684 Appendix E – Additional Information on Radon Control (Strategy 3.3)
692 Appendix F – Additional Information on Material Emissions (Strategy 5.1)
707 Appendix G – Single-Path Multiple-Zone System Design (Strategy 7.4)
716 Appendix H – Carbon Dioxide Generation Rates (Strategy 8.3)
ASHRAE IAQBestPractices 2ndEdition 2014
$49.40