ASHRAE Journal - January 2023 - 2

CONTENTS
January 2023
COLUMNS
16 Engineer's Notebook
The VRF Learning Curve
By Michael Gallagher
34
FEATURES
34 Sustainable Energy Solution:
Affordable Off-Grid Residential Heating
By Julio C. Guerrero and William M. Worek
Look for an ASHRAE Journal Podcast on this
topic in January: ashrae.org/podcast
TECHNICAL FEATURE
42 Why Climate and Geography
Matter in Chilled Water Systems
By Alec Cusick
TECHNICAL FEATURE
48 The 2022 Energy Genius Award Winner
By Kelvin Chan Chun Kit and John Constantinide
Columnist Andy Pearson talks
about his love of math. Listen to
his interesting 10-minute chat
with our Technical Editor.
Show Guide
After page 40
AHR EXPO
AHR EXPO
ECIAL
SPECIAL
SUPPLEMENT
2023
SUP
2023
Show Guide
After page 40
DEPARTMENTS
4 Commentary
6 Letters
Scan the QR code or visit
https:/ /tinyurl.com/HotAirAJ
Submissions: https://tinyurl.com/JournalSubmit
Archive: technologyportal.ashrae.org
Letters: rebecca@ashrae.org
Missing Issue: cservice@ashrae.org
10 Meetings and Shows
12 Industry News
53 Software Resources
54 Advertisers Index
Atlanta cover image: iStock.com/Sean Pavone
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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
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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.
2
J A N U A RY 2 0 2 3 ashrae.o rg ASHRAE JOURNAL
V O L U ME 6 5, N O. 1
EMEN
26 Building Sciences
There Is No Such Thing as a Free
Thermodynamic Lunch
By Joseph W. Lstiburek
30 IEQ Applications
Does Air Sampling Answer Your
IAQ Questions?
By Ed Light
56 Refrigeration Applications
The Year of the Elevator
By Andy Pearson

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ASHRAE Journal - January 2023

Table of Contents for the Digital Edition of ASHRAE Journal - January 2023