Consulting-Specifying Engineer - February 2009 - (Page 8) In The News The DOE noted that the newer version of the standard contained 13 positive impacts on energy efficiency. These impacts included changes made through the public review process in which users of the standard comment and offer guidance on proposed requirements to the standard. The positive impacts include: • Removal of the explicit allowance for supply air into non-occupied isolation areas • Limitations of the use of dampers in closed-circuit cooling towers in place of water bypass valves and piping • Additions of insulation requirements for buried ductwork • Mapping of envelope requirements to new climate zones, which led to increased stringency of envelope requirements • Mapping of economizer requirements to new climate zones, which led to greater geographic expansion of economizer requirements • Addition of requirements for ventilation fan controls • Lowered size range for part-load fan power limitation • Addition of requirements for heat pump pool heaters • Complete replacement of interior lighting power density allowances • Revised exterior lighting power density allowances • Addition of occupancy sensor requirements for classrooms, meeting, and lunchrooms • Lower retail sales lighting power allowance • New exit sign wattage requirement. In addition, ASHRAE is working on providing more stringent energy guidance in a proposed standard for high-performance buildings. Developed in partnership with IESNA and the U.S. Green Building Council, Standard 189.1, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings, will provide minimum requirements for the design of high-performance new commercial buildings and major renovation projects, addressing energy efficiency, a building’s impact on the atmosphere, sustainable sites, water use efficiency, materials and resources, and indoor environmental quality. Developed in response to the 1970s energy crisis, Standard 90.1 influences building designs worldwide. It has become the basis for building codes, and the standard for building design and construction throughout the United States. Innovation. Precision. Leadership. ARCOM is the choice of architects, engineers and construction industry professionals for master specifications, automation technology, and consulting services for the production of essential construction documentation. Trust the most experienced and authoritative specification resource in the business: ARCOM. ARCOM is the publisher of MasterSpec.® MasterSpec is exclusively endorsed by: Input #206 at csemag.com/quickResponse 8 Consulting-Specifying Engineer • FEBRUARY 2009 http://www.arcomnet.com/csef http://www.arcomnet.com/csef http://www.csemag.com/quickResponse
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