ASHRAE Journal - October 2012 - 3

CONTENTS 14 38

Vol. 54, No. 10|October 2012

Features

Standing Columns

14 26 38 54 46
72

Energy Audits, Improvements in Small Office Buildings
By Ian M. Shapiro, P .E.

66 81 86 92 94 98 100

Building Sciences

Bobby Darin and Thermal Performance

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

Long-Term Commercial GSHP Performance

Part 4: Installation Costs By Steve Kavanaugh, Ph.D.; Mike Green, P .E.; Kirk Mescher, P .E.

Emerging Technologies
Induction or PM Motors
By Darrell J. King; Alissa Cooperman; John Dieckmann; James Brodrick, Ph.D.

Using CO2 to Reduce Refrigerant Charge
By S. Forbes Pearson, Ph.D.

Data Centers
By Don Beaty, P .E.

Commissioning Design/Build Projects

Data Centers and Comfort Cooling

By Stephen C. Turner, P .E.; Mark Hogil Jung; Seung Hwan Hwang

2012 ASHRAE TECHNOLOGY AWARDS
Efficient Science Building
By Mike J. Lawless

IAQ Applications
Residential AC Filters
By John Proctor, P.E.

Refrigeration Applications
Defrost Cycle
By Andy Pearson, Ph.D., C.Eng.

Special Sections
ASHRAE Research Report

HR1 ASHRAE Honor Roll
102 Products 103 Classified Advertising 104 Advertisers Index

Washington Report
Grassroots Start to Grow
By Mark Ames; Mark Wills

Departments
4 Commentary 6 Industry News 9 Letters 10 Meetings and Shows 96 Special Products 99 People

Engineer’s Notebook
Legionella: Don’t Assume
By Matthew R. Freije

ASHRAE® Journal (ISSN 0001-2491) MISSION STATEMENT | ASHRAE Journal reviews current HVAC&R technology of broad interest through publication of application-oriented articles. ASHRAE Journal’s
editorial content ranges from back-to-basics features to reviews of emerging technologies, covering the entire spectrum of professional interest from design and construction practices to commissioning and the service life of HVAC&R environmental systems. PUBLISHED MONTHLY | Copyright 2012 by ASHRAE, 1791 Tullie Circle N.E., Atlanta, GA 30329. Periodicals postage paid at Atlanta, Georgia, and additional mailing offices. LETTERS/MANUSCRIPTS | Letters to the editor and manuscripts for publication should be sent to: Fred Turner, Editor, ASHRAE Journal, fturner@ashrae.org. SUBSCRIPTIONS | $8 per single copy (includes postage and handling on mail orders). Subscriptions for members $6 per year, included with annual dues, not deductible. Nonmember $79 (includes postage in USA); $79 (includes postage for Canadian); $149 international (includes air mail). Expiration dates vary for both member and nonmember subscriptions. Payment (U.S. funds) required with all orders. CHANGE OF ADDRESS | Requests must be received at subscription office eight weeks before effective date. Send both old and new addresses for the change. ASHRAE members may submit address changes at www.ashrae.org/address. POSTMASTER | Send form 3579 to: ASHRAE Journal, 1791 Tullie Circle N.E., Atlanta, GA 30329. Canadian Agreement Number 40037127. ONLINE at ASHRAE.org | Feature articles are available online. Members can access articles at no cost. Nonmembers may purchase articles at www.ashrae.org/bookstore. | MICROFILM | This publication is microfilmed by National Archive Publishing Company. For information on cost and issues available, contact NAPC at 800-420-NAPC or www.napubco.com. 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.

ASHRAE Journal - October 2012

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