ASHRAE Journal - November 2019 - 53

ASHRAE - CELEBRATING 125 YEARS

for engineers on the application of clean spaces.† The
1966 and 1971 Handbooks combined "clean spaces"
with computer rooms, while 1974 saw the ﬁrst solitary
chapter covering "clean spaces." A terminology section
was added in 1966. Clean space applications continued to warrant special attention as Task Group in TC
9.2 Industrial Air Conditioning until its elevation to a
Technical Committee TC 9.11 in 1996.
ASHRAE guidebooks and handbooks have followed
advances in cleanroom standards referencing FEDSTD-209 in the 1966 handbook and the ISO Standards
soon after their publication in the early 2000s. The
Handbook added a section on the use of computational
ﬂuid dynamics (CFD) in 1995, providing updates on CFD
application and beneﬁts ever since. Energy savings in
cleanrooms were also added in the 1990s.
Under the auspices of TC 9.11, Clean Spaces, and seeking
input from experts around the world, the ASHRAE Design
†ASHRAE Guide Books and Handbooks combined clean spaces and
computer rooms until 1974 when Clean Spaces became a standalone chapter in the ASHRAE Handbook-HVAC Applications.

Guide for Cleanrooms: Fundamentals, Systems, and Performance
was published in 2018. The design guide covers the latest
information on fundamentals of contamination control,
cleanroom air management, particle theory, application
of CFD and select industry applications.26

Conclusion
The application of cleanrooms has become a common
method of controlling contamination and improving
the environment for people, equipment and materials.
ASHRAE has been providing air-conditioning engineers
guidance on cleanrooms for over 50 years and will continue into the future.

References
1. 2018 ASHRAE Handbook-HVAC Applications.
2. Thompson, J.A. 1975. The hospital: A social and architectural history.
First Edition. Yale University Press.
3. Hook, S.V. 2011. Louis Pasteur: Groundbreaking Chemist & Biologist.
ABDO Publishing Company.
4. Holbrook, D. 2009. "Controlling contamination: the origins of
clean room technology." History and Technology 25(3)173 - 191.

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