May 02, 2013: Vol. 12, No. 18 Advancing HVAC&R to Serve Humanity
And Promote a Sustainable World  



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Industry News

1 World Trade Center Rising to Tallest Skyscraper in Western Hemisphere
NEW YORK—One World Trade Center already is New York's tallest building. When the last pieces of its spire eventually are placed on the roof, the 104-floor skyscraper will be feet from becoming the tallest in the Western Hemisphere. Weather prevented that from happening this week. The Port Authority of New York and New Jersey says the spire pieces plus a steel beacon will instead be lifted at a later date from the rooftop to cap the building at 1,776 ft (541 m). That would surpass Willis Tower in Chicago, which is 1,729 ft (527 m). The New York skyscraper replaces the Twin Towers that were destroyed on Sept. 11, 2001. The 408 ft (124 m) spire will serve as a broadcast antenna that will provide public transmission services for television and radio channels.

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Focus on Cost Hindering Potential of 'Intelligent' Buildings, Says Study
ATLANTA—The bid specification process for "intelligent" buildings produces projects that are cost-effective, but not necessarily optimized for performance, according to a recently completed study by the Continental Automated Buildings Association (CABA). The study found that the influence of various trades in the contracting and subcontracting processes involved in projects results in cost becoming the sole determinant for procurement, no matter what the original schematic design recommended. The study also found lack of product knowledge to be a common issue among owners and operators. The demand potential for intelligent buildings solutions is impacted by their perceived price-performance ratio. Building owners do not have a clear idea of the actual benefits of buying "intelligent" building products and solutions, especially their life-cycle benefits.

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Court Stays May 1 Compliance Date for Regional Furnace Rules
WASHINGTON—The U.S. Court of Appeals for the D.C. Circuit has ruled favorably on an emergency motion filed by the Air-conditioning, Heating, and Refrigeration Institute (AHRI) requesting a stay of the May 1 compliance date for compliance with U.S. Department of Energy (DOE) regulations. In granting the motion, the Court legally prevents DOE from applying the standards or enforcing them until the underlying case is resolved. The standards, requiring residential non-weatherized natural gas furnaces to be installed in 30 northern states to have an AFUE rating of at least 90%, were finalized in 2011 with an effective date of May 1, 2013. The American Public Gas Association (APGA) filed a legal challenge to the rules shortly thereafter. Other industry organizations, including the Air Conditioning Contractors of America (ACCA), joined in the challenge to the rules. AHRI filed its motion after a Jan. 11 final settlement agreement was reached between APGA and DOE.

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Chemicals From Personal Care Products Pervasive in Air
CHICAGO—Chemicals from deodorants, lotions and conditioners are showing up in Chicago’s air at levels that researchers called alarming. A new study found that the airborne cyclic siloxanes are escaping indoor environments and traveling to places as far away as the Arctic. “It’s population based,” said Rachel Yucuis, a masters student at the University of Iowa and lead author of the new study. “And indoors you have both personal products sitting out, and what’s on people, in a concentrated space.” Whether there are any risks from breathing the chemicals is unknown. There have been no studies to measure people’s exposures or investigate potential health risks. However, the chemicals have been found to be toxic to aquatic life.

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AIA Recognizes Top Quantified 'Green' Project
WASHINGTON—The American Institute of Architects (AIA) has selected 355 11th Street: The Matarozzi/Pelsinger Multi-Use Building, in San Francisco as the inaugural recipient of its first Top Ten Plus award. The Top Ten Plus recognizes one past AIA COTE Top Ten Projects Award recipient that has quantifiable metrics that demonstrate the impact the sustainable design has achieved. The project at 355 11th Street was recognized as a 2010 AIA/COTE Top Ten Project Award recipient. The project is a LEED-NC Gold adaptive reuse of a historic and previously derelict early 20th century industrial building which includes a LEED-CI Platinum restaurant on the ground floor. The heat generated from the kitchen has resulted in no additional heat being needed in the office space for all but the handful of cold days in the year. Additional sustainable features include solar energy harvesting, a nonirrigated green roof, and extensive use of natural ventilation.

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Some Deterred by Promoting Environmental Benefits of Efficient Products
PHILADELPHIA—Emphasizing Energy independence, rather than reducing carbon emissions, could be the most-effective impetus to persuade some U.S. shoppers to invest in energy efficiency, according to a new study. It found that conservative-minded voters were put off by labeling promoting the environmental credentials of products such as more efficient light bulbs. "A popular strategy for marketing energy efficiency is to focus on its environmental benefits," said Dena Gromet, Ph.D., the lead author of the paper. "But not everyone values protecting the environment. We were interested in whether promoting the environment could in fact deter some individuals from purchasing energy-efficient options that they would have otherwise selected." The paper is published in the Proceedings of the National Academy of Sciences.

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In other news...

Car Research Body Concludes HFO 1234yf Refrigerant 'Safe and Effective'
California Links With Quebec for Carbon Market
Princeton Review Publishes Annual Guide to 'Green' Colleges
HVAC System Insurance Claims Often Just for Minor Damage
Small California Town Aims to Become 'Solar Capital of the World'
BACnet® International Board of Directors Begins New Term


Mechanical Ventilation Rates Increased in New Version of Standard 62.2
The newly published 2013 version of ANSI/ASHRAE Standard 62.2-2013, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings, removes the default leakage rate assumption and also requires carbon monoxide alarms. The 2013 version includes an increase in mechanical ventilation rates to 7.5 cfm per person plus 3 cfm per 100 ft2, compared to the 2010 version's prescribed minimum of 2 cfm per 100 ft2. This is due to the earlier removal of the earlier default assumption regarding natural infiltration. Another major change is a requirement for carbon monoxide (CO) alarms in all dwelling units.

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Feature of the Week

Commercial Open Loop Heat Pump Systems: Groundwater Issues
By Kevin D. Rafferty, P.E., Associate Member ASHRAE
This article focuses on the groundwater side of open loop heat pump systems, which are less likely to be familiar to HVAC engineers. The article answers the question of why such systems should be used, and covers issues such as groundwater handling and well site selection.

This article originally was published in March 2009. Click here to download the article. It will be available here through May 16.

After May 16, access to the article from this eNewsletter will no longer be available. It will remain available for free download by members here and for purchase by nonmembers in the online store.

Product News

Packaged Rooftop Units From Carrier
SYRACUSE, N.Y.—Carrier has expanded its WeatherExpert series of commercial rooftop units with Integrated Energy Efficiency Ratio (IEER) ratings up to 20.6. The 6 ton to 22 ton (21 kW to 77 kW) units feature three stages of capacity control using scroll compressors and ECM (electronically commutated motor) outdoor fan motors. In addition, the indoor fan motor is controlled by the company’s Staged Air Volume (SAV) system to precisely match fan operation to the staging compressors.

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Lighting Control System From Autani
COLUMBIA, Md.—Autani Corporation introduces the e>pod lighting control system. e>pod supports up to eight zones of LED lighting per room, and is compatible with wired and self-powered wireless switches and sensors. e>pod rooms can operate as stand-alone control systems, integrate with BASes, or join wired or wireless control networks.

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Filter-Drier From Parker Hannifin
WASHINGTON, Mo.—Parker Hannifin offers the new CO Series copper filter-drier, designed to withstand the extreme pressure of transcritical carbon dioxide (R-744) systems while providing complete system protection in a compact design. It is designed to handle a maximum rated pressure of 2,250 psig (15 500 kPa). Its patent pending design uses an outer sleeve to provide the high pressure rating while reducing weight of the product.

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