Evaluating Airflow-Measuring Devices
By Leonard A. Damiano
Sources of differences between expected and actual performance...MORE
AHRI Applauds President's Signing of Stimulus Bill
The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) approves the economic-stimulus bill signed by President Obama. The stimulus bill will provide incentives for consumers to upgrade existing heating and cooling equipment and provide funding for the federal government, states, and cities to improve energy efficiency in buildings and schools...MORE
Free AutoCAD MEP Webcast
As today's building projects increase in complexity, communicating designs and design changes among mechanical, electrical, and plumbing (MEP) engineers and their extended teams, including architects and structural engineers, becomes more important. If you're a MEP designer or engineer, our webcast series featuring AutoCAD MEP and Revit MEP will help you improve productivity, accuracy, and coordination. To register, click here.
2009 Uniform Plumbing and Mechanical Codes
The 2009 editions of the Uniform Plumbing Code (UPC) and Uniform Mechanical Code (UMC), developed by the International Association of Plumbing and Mechanical Officials (IAPMO) using an American National Standards Institute- (ANSI-) accredited consensus process, were released on March 1. Key changes to the 2009 UPC include new requirements for the installation of nonwater urinals and the distribution of hot water and updates to the identification of potable- and nonpotable-water systems. Key changes to the 2009 UMC include new requirements for outdoor-air ventilation and the protection of mechanical equipment against flood damage, as well as approved referenced standards for hydronics systems...MORE
ASHRAE's Commitment to Natural Refrigerants
In a new position document, the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) outlines its support for research, assessment, and strategic growth in the area of natural refrigerants, such as ammonia, carbon dioxide, hydrocarbons, air, and water, in refrigeration systems...MORE
BACnet Standard Updated
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) recently published Standard 135-2008, BACnet--A Data Communication Protocol for Building Automation and Control Networks. This new publication includes seven addenda that add BACnet/Web Services and new objects for Event Log, Trend Log Multiple, Load Control, and Access Door. The BACnet committee has 11 more addenda in process for the 2008 version of 135 and an additional four for 135.1, its companion testing standard...MORE
Training Seminars
Bell & Gossett announced its training-course schedule for the spring. The free training seminars are offered at the Bell & Gossett Little Red Schoolhouse Education Center in Morton Grove, Ill., and are open to engineers, contractors, and facility-maintenance professionals. Spring seminars are on hydronic and steam-system design and application, modern hydronics, service and maintenance, operation and maintenance of steam systems, and large chilled-water-system design...MORE