ASHRAE Journal - January 2019 - 3

CONTENTS VOL. 61, NO. 1, JANUARY 2019

STANDING COLUMNS
50

44 ENGINEER'S NOTEBOOK

When N+1 Just Isn't Enough
By Stephen W. Duda, P.E.

50 BUILDING SCIENCES

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

56 REFRIGERATION APPLICATIONS

FEATURES

How Changing Filters
Led to Condensation
And Mold Problems
Life in the Fast Lane

Can Current Zone Selections
Provide Occupant Comfort?

By Andy Pearson, Ph.D., C.Eng.

57 DATA CENTERS

Designing Data Center
Waterside Economizers, Pt. 2

By Peter Simmonds; Tom Hartman

A Balanced System Approach
To the Water-Energy Nexus

By Donald L. Beaty, P.E.;
David Quirk, P.E.; Frank T. Morrison
62 IEQ APPLICATIONS

By James Poole, P.E.; Mark Lessans

Proposed Metrics for IAQ
In Low-Energy Residential
Buildings

Dedicated Heat Recovery Virtual
Chiller Provides Savings for NASA

By Marc Abadie, Ph.D.;
Pawel Wargocki, Ph.D.;
Carsten Rode, Ph.D.; Jensen Zhang, Ph.D.

By Michael Reed; Wade Robinson; Norm Hawes

Installation Precautions for Split
System Air-Cooled Condensing Units

66 RESIDENTIAL APPLICATIONS

Moving Into Green
Healthy Housing

By George Games, P.E.

By David E. Jacobs; Jonathan Wilson;
Sherry L. Dixon, Ph.D.; Jill Breysse

DEPARTMENTS
4 Commentary
6 Industry News 10 Letters
12 Meetings and Shows 70 People
71 Classiﬁed Advertising
72 Advertisers Index
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