ASHRAE Journal - August 2009 - 5

ASHRAE 19 50 59–2009 YE A R S JOURNAL COMMENTARY Existing Buildings Only 2% of construction projects are new construction, so ASHRAE must focus on existing buildings if it is to achieve its goals of a more energy-efficient and sustainable future. This is the central issue in the presidential address by 2009 – 10 ASHRAE President Gordon Holness, P.E., Fellow/ Life Member ASHRAE. His presidential theme is “Sustaining Our Future by Rebuilding Our Past.” His address is reprinted in this edition. “Clearly, the greatest opportunity for overall reduction in our primary energy use is within the existing building stock,” Holness told members at the ASHRAE Annual Conference in Louisville, Ky. Fred Turner “If ASHRAE is looking to build a sustainable future, we can see the foundations of that around us right now. They are the buildings we work in, our homes, our schools, our hospitals, hotels and even places of worship.” Holness said that while ASHRAE has a number of initiatives under way, it needs to produce a cohesive program that promotes energy efficiency in existing buildings. “The issues we face are as much political and sociological as they are technical. They are also economic, and while we have let others carry the message in the past, we must now lead the charge. ASHRAE can not only provide the technology but also can be the voice of the people, the voice of reason, the voice of change.” I THINK it’s generally understood that HFCs will be restricted at some point in stationary HVAC&R applications. HFOs are a potential replacement option. This low global warming potential (GWP) refrigerant has a group of variations. Some are flammable and/or toxic. At least one has some potential to replace the HFC, R-134a. This month’s article by J. Steven Brown, Ph.D., P Member .E., ASHRAE, is a good introduction to this topic, and a good primer on the chemistry and nomenclature of refrigeration. Engineers Make It Work “Scientists make it known, but engineers make it work” is the theme of a public service advertising campaign of the Engineers Joint Council. The announcement in the August 1959 issue of ASHRAE Journal said the campaign’s purpose is to create a desirable understanding of engineers and engineering by media, public officials and organizations, and advertising agencies. The news brief also said the campaign is intended to help the public better understand what engineers do, and also clear up any confusion between the terms “scientists” and “engineers.” T HI S E DI T I O N ’ S 5 0 t h a n n i v e r s a r y a r t i c l e i s “Fundamentals of Linear Control Theory” by William P. Chapman, P .E., Presidential/Fellow/Life Member ASHRAE. Chapman retired in 1984 as vice president of technology at Johnson Controls, Milwaukee. He joined the company in 1956. He served as a captain in the U.S. Army in World War II, and earned the Silver Star for valor. He was president of ASHRAE in 1976 – 77 and served on numerous Society-level committees. His honors include the Distinguished Service Award, the F. Paul Anderson Award and the ASHRAE-ALCO Medal for Public Service. He died in April 2002 at the age of 82. WE ALSO have a full lineup of articles. Of special interest is the article on duct calculations. This is our second article that marries print and digital publishing through downloadable spreadsheets. The first article was published in May. This month’s article provides an alternative to duct calculators. We hope you enjoy this edition. Please send us your comments and suggestions. 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 August 2009 ASHRAE Journal 5

ASHRAE Journal - August 2009

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