ASHRAE Journal - May 2009 - 3

CONTENTS 30 42 Vol. 51, No. 5 | May 2009 Features 18 Moving Air for Comfort By Edward Arens, Ph.D.; Stephen Turner, P .E.; Hui Zhang, Ph.D.; and Gwelen Paliaga Standing Columns 74 Building Sciences Arrhenius and the Mayor By Joseph W. Lstiburek, Ph.D., P .Eng. 50 30 42 50 56 Lessons Learned in Portable Classrooms By Stephanie Thomas-Rees, Danny Parker, And John Sherwin 87 Emerging Technologies Going ‘Back to the Future’ Of Evaporative Cooling By John Dieckmann; Kurtis McKenney; And James Brodrick, Ph.D. Using Time-of-Day Scheduling to Save Energy By John Murphy and Neil Maldeis, P.E. Departments 5 7 12 16 80 92 94 96 Commentary Industry News Letters Meetings and Shows InfoCenter Special Products Classified Advertising Advertising Index Equal Friction Solution for Duct Sizing By Fred W. Dougherty, P.E. Anniversary Feature: System Application and Design for School Air Conditioning By Robert W. Flanagan 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 2009 by the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 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 $59 (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 40064709. 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. | CUSTOM ARTICLE REPRINTS | Reprints are available from The YGS Group, call 800-290-5460 or Email ASHRAEreprints@theYGSgroup.com. 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 - May 2009

Table of Contents for the Digital Edition of ASHRAE Journal - May 2009

ASHRAE Journal - May 2009
Contents
Commentary
Industry News
Letters
Meetings and Shows
     Moving Air for Comfort
Feature Articles
     Lessons Learned in Portable Classrooms
     Using Time-of-Day Scheduling to Save Energy
     Equal Friction Solution for Duct Sizing
     Anniversary Feature: System Application and Design for School Air Conditioning
Building Sciences
InfoCenter
Emerging Technologies
Special Products
Classified Advertising
Advertising Index
ASHRAE Journal - May 2009 - ASHRAE Journal - May 2009
ASHRAE Journal - May 2009 - Cover2
ASHRAE Journal - May 2009 - 1
ASHRAE Journal - May 2009 - 2
ASHRAE Journal - May 2009 - Contents
ASHRAE Journal - May 2009 - 4
ASHRAE Journal - May 2009 - Commentary
ASHRAE Journal - May 2009 - 6
ASHRAE Journal - May 2009 - Industry News
ASHRAE Journal - May 2009 - 8
ASHRAE Journal - May 2009 - 9
ASHRAE Journal - May 2009 - 10
ASHRAE Journal - May 2009 - 11
ASHRAE Journal - May 2009 - Letters
ASHRAE Journal - May 2009 - 13
ASHRAE Journal - May 2009 - 14
ASHRAE Journal - May 2009 - 15
ASHRAE Journal - May 2009 - Meetings and Shows
ASHRAE Journal - May 2009 - 17
ASHRAE Journal - May 2009 - Feature Articles
ASHRAE Journal - May 2009 - 19
ASHRAE Journal - May 2009 - 20
ASHRAE Journal - May 2009 - 21
ASHRAE Journal - May 2009 - 22
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ASHRAE Journal - May 2009 - 27
ASHRAE Journal - May 2009 - 28
ASHRAE Journal - May 2009 - 29
ASHRAE Journal - May 2009 -      Lessons Learned in Portable Classrooms
ASHRAE Journal - May 2009 - 31
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ASHRAE Journal - May 2009 - 38
ASHRAE Journal - May 2009 - 39
ASHRAE Journal - May 2009 - 40
ASHRAE Journal - May 2009 - 41
ASHRAE Journal - May 2009 -      Using Time-of-Day Scheduling to Save Energy
ASHRAE Journal - May 2009 - 43
ASHRAE Journal - May 2009 - 44
ASHRAE Journal - May 2009 - 45
ASHRAE Journal - May 2009 - 46
ASHRAE Journal - May 2009 - 47
ASHRAE Journal - May 2009 - 48
ASHRAE Journal - May 2009 - 49
ASHRAE Journal - May 2009 -      Equal Friction Solution for Duct Sizing
ASHRAE Journal - May 2009 - 51
ASHRAE Journal - May 2009 - 52
ASHRAE Journal - May 2009 - 53
ASHRAE Journal - May 2009 - 54
ASHRAE Journal - May 2009 - 55
ASHRAE Journal - May 2009 -      Anniversary Feature: System Application and Design for School Air Conditioning
ASHRAE Journal - May 2009 - 57
ASHRAE Journal - May 2009 - 58
ASHRAE Journal - May 2009 - 59
ASHRAE Journal - May 2009 - 60
ASHRAE Journal - May 2009 - 61
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ASHRAE Journal - May 2009 - 64b
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ASHRAE Journal - May 2009 - Building Sciences
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ASHRAE Journal - May 2009 - InfoCenter
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ASHRAE Journal - May 2009 - 86
ASHRAE Journal - May 2009 - Emerging Technologies
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ASHRAE Journal - May 2009 - 91
ASHRAE Journal - May 2009 - Special Products
ASHRAE Journal - May 2009 - 93
ASHRAE Journal - May 2009 - Classified Advertising
ASHRAE Journal - May 2009 - 95
ASHRAE Journal - May 2009 - Advertising Index
ASHRAE Journal - May 2009 - Cover3
ASHRAE Journal - May 2009 - Cover4
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