ASHRAE Journal - February 2020 - 2

CONTENTS VOL. 62, NO. 2, FEBRUARY 2020

STANDING COLUMNS
56 ENGINEER'S NOTEBOOK

Why Don't Mixing Boxes
Mix and What Should We Do
About It
By Kelley Cramm, P.E.

60 BUILDING SCIENCES

Interior Spray Foam

By Joseph W. Lstiburek, Ph.D., P.Eng.

FEATURES

Automatic Long-Term Thermal
Comfort Monitoring in Buildings

68 IEQ APPLICATIONS

Living Lab Integrates IEQ
Technologies in Singapore

By Zuraimi Sultan, Ph.D;
Costas Spanos, Ph.D.; Edwin Goh; Gao
Chun Ping, Ph.D.; Majid Sapar

By Justin Berquist, P.Eng.; William O'Brien, Ph.D., P.Eng.;
Mohamed Ouf, Ph.D., P.Eng.

DOAS Optimization With Connected
Commissioning

72 REFRIGERATION APPLICATIONS

The Art of Compromise
By Andy Pearson, Ph.D., C.Eng.

By Juan Carlos Guillen, P.E.; Christopher Nowak

Research Update on Lower GWP
Flammable Refrigerants

History of Thermostatic Expansion
Valve

By Jordan C. Larsen; Brigitte Busch

Updates to ASHRAE's Continuous
Maintenance Standards: Creating
Clearer Paths to Compliance

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DEPARTMENTS
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Commentary
Industry News
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PUBLICATION DISCLAIMER | ASHRAE has compiled this publication
with care, but ASHRAE has not investigated and ASHRAE
expressly disclaims any duty to investigate any product,
service, process, procedure, design or the like which may
be described herein. The appearance of any technical data,
editorial material or advertisement in this publication does
not constitute endorsement, warranty or guarantee by ASHRAE
of any product, service, process, procedure, design or the
like. ASHRAE does not warrant that the information in this
publication is free of errors and ASHRAE does not necessarily
agree with any statement or opinion in this publication. The
entire risk of the use of any information in this publication and
its supplement is assumed by the user.
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ASHRAE Journal - February 2020

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