ASHRAE Journal - September 2009 - 5

ASHRAE 19 50 59–2009 YE A R S JOURNAL COMMENTARY Getting to Net Zero Are net zero energy buildings achievable, maintainable and practical? The answers are yes, according to “Getting to Net Zero,” an article by ASHRAE members Drury Crawley, Ph.D.; Shanti Pless; and Paul Torcellini, Ph.D., P.E. Their article provides an overview of the U.S. Department of Energy’s Zero Energy Buildings Database. This program collects and shares data contributed voluntarily by building owners committed to pushing the boundaries of building performance. The purpose is to drive down uncertainty and accelerate investment in net zero energy buildings. Early data has come from buildings designed to be low energy, but not net zero energy. These buildings achieved significant energy savings, but none have reached the savings modeled in the design. “But it is already clear,” say the authors, Fred Turner “that high-performance commercial buildings—some NZEBs, some almost NZEBs—can be constructed cost effectively, provide productive environments for occupants, reduce operating costs and enhance competitiveness ” RELATED ARTICLES in this issue cover: • The impact of height, façade, building type and site conditions on net zero energy building design. This article concludes that net zero energy is probably not achievable for buildings taller than two stories. • A case study of the Science and Technology Facility at U.S. Department of Energy’s National Renewable Energy Laboratory in Golden, Colo. This building was designed to accelerate commercialization of alternative energy technologies. • A lessons learned article on solar hot-water systems. This article chronicles the experiences of ASHRAE’s Utah Chapter’s project to install, commission and operate a solar domestic hot-water system at a local charity. Letters Appreciated “Engineers are not given to the habit of writing letters, thus we are much more appreciative of the courtesy when they do.” This is part of an appeal for letters in the September 1959 edition of ASHRAE Journal. “That one who comments does not always persuade is less important than that he induces or stimulates thought; that he provokes intelligent reactions,” wrote Journal Editor Edward R. Searles. STEAM HEATING is mostly limited to buildings 50 years old and older, and fewer engineers have experience in the system design and management. This is why we’re taking advantage of our 50th Anniversary series to republish A Primer on Low Pressure Steam Heating Systems from the January 1994 edition of ASHRAE Journal. The author is ASHRAE member Roy C.E. Ahlgren, who retired in 2008 as director of the “Little Red Schoolhouse” at ITT Bell & Gossett, Morton Grove, Ill. Ahlgren now writes a regular column for Plumbing Systems & Design, the official magazine of the American Society of Plumbing Engineers. SO ARE NZEB buildings achievable, maintainable and practical? Probably more important than answers is the search, which is yielding new applications and strategies, and the experience as to what works and what doesn’t. According to “Getting to Net Zero,” buildings in the U.S. consume 40% of primary energy. Electricity consumption in the commercial sector doubled between 1980 and 2000 and is expected to increase another 50% by 2025. Making buildings less and less bad is a critical endeavor. It will be an epic achievement when the process also leads to widespread net zero energy construction. A SHRAE ® Journal | 1791 Tullie Circle NE | Atlanta, GA 30329-2305 | Phone: 404-636-8400 | Fax: 404-321-5478 | A SHRAE Online: www.ashrae.org Publisher W. Stephen Comstock Editor Fred Turner | fturner@ashrae.org Managing Editor Sarah Foster | sfoster@ashrae.org Associate Editors Rebecca Matyasovski | rmatyasovski@ashrae.org Charlotte Tubbs | ctubbs@ashrae.org Christopher Weems | cweems@ashrae.org Copy Editor Jeri Eader | jeader@ashrae.org Publishing Services Manager David Soltis Production Jayne Jackson Tracy Becker Advertising Sales Manager Greg Martin | gmartin@ashrae.org Advertising Production Coordinator Vanessa Johnson | vjohnson@ashrae.org Circulation Specialist David Soltis | dsoltis@ashrae.org ASHRAE OFFICERS President Gordon V.R. Holness, P .E. President-Elect Lynn G. Bellenger, P .E. Treasurer Ronald E. Jarnagin Vice Presidents William P Bahnfleth, Ph.D., P . .E. James R. Fields Sheila J. Hayter, P .E. Thomas E. Watson, P .E. Secretary & Executive Vice President Jeff H. Littleton POLICY GROUP 2009 – 10 Chair Publications Committee Stanley A. Mumma, Ph.D., P .E. Washington Office washdc@ashrae.org Member of the Audit Bureau of Circulation September 2009 ASHRAE Journal 5

ASHRAE Journal - September 2009

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

ASHRAE Journal - September 2009
Contents
Commentary
Industry News
Letters
Meetings and Shows
Getting to Net Zero
Feature Articles
How High Can You Go? Building Height and Net Zero
Lab for Learning
Solar Hot-Water Heating System: Lessons Learned
50th Anniversary—Low Pressure Steam Heating Systems
Building Sciences
Products
Emerging Technologies
People
Classified Advertising
Advertisers Index
ASHRAE Journal - September 2009 - ASHRAE Journal - September 2009
ASHRAE Journal - September 2009 - Cover2
ASHRAE Journal - September 2009 - 1
ASHRAE Journal - September 2009 - 2
ASHRAE Journal - September 2009 - Contents
ASHRAE Journal - September 2009 - 4
ASHRAE Journal - September 2009 - Commentary
ASHRAE Journal - September 2009 - Industry News
ASHRAE Journal - September 2009 - 7
ASHRAE Journal - September 2009 - 8
ASHRAE Journal - September 2009 - 9
ASHRAE Journal - September 2009 - Letters
ASHRAE Journal - September 2009 - 11
ASHRAE Journal - September 2009 - 12
ASHRAE Journal - September 2009 - 13
ASHRAE Journal - September 2009 - 14
ASHRAE Journal - September 2009 - 15
ASHRAE Journal - September 2009 - Meetings and Shows
ASHRAE Journal - September 2009 - 17
ASHRAE Journal - September 2009 - Feature Articles
ASHRAE Journal - September 2009 - 19
ASHRAE Journal - September 2009 - 20
ASHRAE Journal - September 2009 - 21
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ASHRAE Journal - September 2009 - 24
ASHRAE Journal - September 2009 - 25
ASHRAE Journal - September 2009 - How High Can You Go? Building Height and Net Zero
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ASHRAE Journal - September 2009 - 32a
ASHRAE Journal - September 2009 - 32b
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ASHRAE Journal - September 2009 - 36
ASHRAE Journal - September 2009 - 37
ASHRAE Journal - September 2009 - Lab for Learning
ASHRAE Journal - September 2009 - 39
ASHRAE Journal - September 2009 - 40
ASHRAE Journal - September 2009 - 41
ASHRAE Journal - September 2009 - 42
ASHRAE Journal - September 2009 - 43
ASHRAE Journal - September 2009 - Solar Hot-Water Heating System: Lessons Learned
ASHRAE Journal - September 2009 - 45
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ASHRAE Journal - September 2009 - 50
ASHRAE Journal - September 2009 - 51
ASHRAE Journal - September 2009 - 52
ASHRAE Journal - September 2009 - 53
ASHRAE Journal - September 2009 - 50th Anniversary—Low Pressure Steam Heating Systems
ASHRAE Journal - September 2009 - 55
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ASHRAE Journal - September 2009 - 57
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ASHRAE Journal - September 2009 - Building Sciences
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ASHRAE Journal - September 2009 - 81
ASHRAE Journal - September 2009 - Products
ASHRAE Journal - September 2009 - 83
ASHRAE Journal - September 2009 - Emerging Technologies
ASHRAE Journal - September 2009 - 85
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ASHRAE Journal - September 2009 - 87
ASHRAE Journal - September 2009 - 88
ASHRAE Journal - September 2009 - 89
ASHRAE Journal - September 2009 - People
ASHRAE Journal - September 2009 - 91
ASHRAE Journal - September 2009 - 92
ASHRAE Journal - September 2009 - Classified Advertising
ASHRAE Journal - September 2009 - 94
ASHRAE Journal - September 2009 - 95
ASHRAE Journal - September 2009 - Advertisers Index
ASHRAE Journal - September 2009 - Cover3
ASHRAE Journal - September 2009 - Cover4
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