ASHRAE Handbook: The Definitive Authority for HVAC Systems
In the world of building engineering and climate control, few resources carry as much weight as the publications provided by ASHRAE. Originally known by its full legal name, the American Society of Heating, Refrigerating and Air-Conditioning Engineers, the organization rebranded in 2012 to simply "ASHRAE." This change reflects the society's expanding worldwide membership and its commitment to evolving services on a global scale.
The Industry Standard for HVAC
The ASHRAE Handbook is a comprehensive four-volume set that serves as the most authoritative reference for HVAC (Heating, Ventilation, and Air Conditioning) systems in buildings. Because of its depth and accuracy, it has been widely referred to as the "Bible" of the industry for over fifty years.
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The Role of ASHRAE Fundamentals
Among the volumes, the ASHRAE Fundamentals is particularly critical for technical calculations. It is the primary authority used, especially in the United States, for determining heat losses from a structure. Rather than relying solely on theoretical analysis, engineers frequently consult the empirically based tables and formulae found within this volume to determine heat loss through glass.
Beyond heat loss, the Fundamentals volume provides the definitive works on the thermal resistance of air spaces—the measure of how well a material or space resists the flow of heat. It is also the standard authority for determining the conductance of windows to calculate heat loss.
Key Facts
- Global Identity: Rebranded from the American Society of Heating, Refrigerating and Air-Conditioning Engineers to ASHRAE in 2012 to reflect global membership.
- Comprehensive Scope: The Handbook consists of four volumes covering HVAC systems for buildings.
- Industry Status: Recognized as the "Bible" of the HVAC industry for more than five decades.
- Technical Authority: Leading source for data on heat and moisture transfer, as well as air infiltration in structures.
- Standardized Calculations: The Fundamentals volume is the primary source for heat flow calculations and window conductance in the U.S.
ASHRAE Reference Summary
| Focus Area | Primary Resource | Application |
|---|---|---|
| General HVAC Systems | ASHRAE Handbook (4 Volumes) | Comprehensive building reference |
| Heat Flow & Loss | ASHRAE Fundamentals | Structure heat loss and glass calculations |
| Thermal Properties | ASHRAE Fundamentals | Air space thermal resistance and window conductance |
| Building Physics | ASHRAE Publications | Moisture transfer and air infiltration |
Frequently Asked Questions
What does ASHRAE stand for?
ASHRAE was originally the American Society of Heating, Refrigerating and Air-Conditioning Engineers, though it now does business simply as ASHRAE to reflect its global reach.
Why is the ASHRAE Handbook called the "Bible" of the industry?
It has earned this nickname over the last fifty years because it provides the most comprehensive and authoritative technical reference for HVAC systems available to professionals.
Which volume is used for heat loss calculations?
The ASHRAE Fundamentals volume is the standard reference for determining heat losses from structures and calculating heat flow.
How is heat loss through windows typically determined?
Heat loss through a window is commonly determined using the conductance of that window, with the ASHRAE Fundamentals serving as the primary authority for these values.
What other technical areas does ASHRAE cover?
ASHRAE is a leading authority on air infiltration in structures, as well as heat and moisture transfer.